LiqTech International (LIQT) 10-Q 10 Nov 22 2022 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2022	Nov. 10, 2022
Document Information [Line Items]
Entity Central Index Key	0001307579
Entity Registrant Name	LIQTECH INTERNATIONAL INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2022
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Entity File Number	001-36210
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	20-1431677
Entity Address, Address Line One	Industriparken 22C, DK 2750
Entity Address, City or Town	Ballerup
Entity Address, Country	DK
City Area Code	45
Local Phone Number	3131 5941
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	LIQT
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		43,896,871

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Current Assets:
Cash and restricted cash	$ 17,605,377	$ 17,489,380
Accounts receivable, net of allowance for doubtful accounts of $161,311 and $409,076 at September 30, 2022 and December 31, 2021, respectively	2,843,864	1,957,579
Inventories, net of allowance for excess and obsolete inventory of $578,076 and $268,470 at September 30, 2022 and December 31, 2021, respectively	4,657,188	5,421,027
Contract assets	2,078,472	1,906,510
Prepaid expenses and other current assets	2,653,978	1,292,285
Total Current Assets	29,838,879	28,066,781
Long-Term Assets:
Property and equipment, net of accumulated depreciation of $7,848,569 and $7,554,803 at September 30, 2022 and December 31, 2021, respectively	6,877,185	8,858,993
Operating lease right-of-use assets	3,119,806	6,925,807
Deposits and other assets	390,634	628,109
Intangible assets, net of accumulated amortization of $376,954 and $357,231 at September 30, 2022 and December 31, 2021, respectively	218,190	334,743
Goodwill	206,639	240,259
Total Long-Term Assets	10,812,454	16,987,911
Total Assets	40,651,333	45,054,692
Current Liabilities:
Accounts payable	1,617,452	1,646,662
Accrued expenses	3,447,107	4,685,665
Current portion of finance lease obligations	321,788	373,824
Current portion of operating lease liabilities	511,240	846,544
Current portion of Convertible Note payable	0	8,400,000
Contract liabilities	635,167	914,828
Total Current Liabilities	6,532,754	16,867,523
Deferred tax liability	154,478	224,779
Other liabilities, net of current portion	0	346,939
Finance lease obligations, net of current portion	1,911,361	2,499,591
Operating lease liabilities, net of current portion	2,608,566	6,154,064
Senior Promissory Notes, net	5,395,240	0
Convertible Note payable, less current portion	0	6,186,936
Total Long-term Liabilities	10,069,645	15,412,309
Total Liabilities	16,602,399	32,279,832
Stockholders' Equity:
Preferred stock; par value $0.001, 2,500,000 shares authorized, 0 shares issued and outstanding at September 30, 2022 and December 31, 2021	0	0
Common stock; par value $0.001, 100,000,000 shares authorized, 43,896,871 and 21,285,706 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively	43,896	21,285
Additional paid-in capital	96,785,016	70,910,902
Accumulated deficit	(65,188,075)	(53,181,928)
Accumulated other comprehensive loss	(7,591,903)	(4,975,399)
Total Stockholders' Equity	24,048,934	12,774,860
Total Liabilities and Stockholders' Equity	$ 40,651,333	$ 45,054,692

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Accounts receivable, allowance for doubtful accounts	$ 161,311	$ 409,076
Inventories, allowance for excess and obsolete inventory	578,076	268,470
Property and equipment, accumulated depreciation	7,848,569	7,554,803
Intangible assets, accumulated depreciations	$ 376,954	$ 357,231
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	2,500,000	2,500,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shared outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	43,896,871	21,285,706
Common stock, shares outstanding (in shares)	43,896,871	21,285,706

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue	$ 3,305,534	$ 4,142,954	$ 11,961,062	$ 12,157,394
Cost of Goods Sold	3,198,255	3,946,732	11,460,102	11,525,847
Gross Profit	107,279	196,222	500,960	631,547
Operating Expenses:
Selling expenses	676,420	1,205,849	2,932,881	3,417,933
General and administrative expenses	1,429,315	1,102,772	4,611,375	3,824,574
Research and development expenses	283,524	497,823	1,377,097	1,370,059
Restructuring costs	(1,964)	0	1,786,863	0
Total Operating Expense	2,387,295	2,806,444	10,708,216	8,612,566
Loss from Operations	(2,280,016)	(2,610,222)	(10,207,756)	(7,981,019)
Other Income (Expense)
Interest and other income	1,870	0	344,593	0
Interest expense	(28,514)	(235,318)	(394,532)	(491,335)
Amortization discount on Notes	(84,098)	(292,129)	(2,304,054)	(543,933)
Gain (Loss) on currency transactions	628,137	218,030	361,928	506,018
Gain on lease termination	(3,317)	0	150,258	0
Gain on sale of fixed assets	(19)	(8)	642	1,126
Total Other Income (Expense)	514,059	(309,425)	(1,841,165)	(528,124)
Loss Before Income Taxes	(1,765,957)	(2,919,647)	(12,048,421)	(8,509,143)
Income Tax Benefit	(13,293)	(15,691)	(42,274)	(47,650)
Net Loss	$ (1,752,664)	$ (2,903,956)	$ (12,006,147)	$ (8,461,493)
Basic and Diluted Loss Per Share (in dollars per share)	$ (0.04)	$ (0.13)	$ (0.37)	$ (0.39)
Basic and Diluted Weighted Average Common Shares Outstanding (in shares)	43,891,799	21,769,461	32,529,152	21,661,945

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net (Loss)	$ (1,752,664)	$ (2,903,956)	$ (12,006,147)	$ (8,461,493)
Other Comprehensive Loss - Currency Translation, Net	(1,646,038)	(603,894)	(2,616,504)	(1,547,311)
Total Comprehensive Loss	$ (3,398,702)	$ (3,507,850)	$ (14,622,651)	$ (10,008,804)

Condensed Consolidated Statem_3

Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
BALANCE (in shares) at Dec. 31, 2020	21,655,461
BALANCE at Dec. 31, 2020	$ 21,655	$ 69,897,698	$ (42,054,968)	$ (3,046,070)	$ 24,818,315
Common stock issued in settlement of RSUs (in shares)	41,912
Common stock issued in settlement of RSUs	$ 42	(42)			0
Stock-based compensation		102,388			102,388
Currency translation, net				(1,311,521)	(1,311,521)
Net (Loss)			(2,459,429)		(2,459,429)
BALANCE (in shares) at Mar. 31, 2021	21,697,373
BALANCE at Mar. 31, 2021	$ 21,697	70,000,044	(44,514,397)	(4,357,591)	21,149,753
BALANCE (in shares) at Dec. 31, 2020	21,655,461
BALANCE at Dec. 31, 2020	$ 21,655	69,897,698	(42,054,968)	(3,046,070)	24,818,315
Currency translation, net					(1,547,311)
Net (Loss)					(8,461,493)
BALANCE (in shares) at Sep. 30, 2021	21,285,706
BALANCE at Sep. 30, 2021	$ 21,285	70,784,780	(50,516,461)	(4,593,381)	15,696,223
BALANCE (in shares) at Mar. 31, 2021	21,697,373
BALANCE at Mar. 31, 2021	$ 21,697	70,000,044	(44,514,397)	(4,357,591)	21,149,753
Stock-based compensation		125,076			125,076
Currency translation, net				368,104	368,104
Net (Loss)			(3,098,108)		(3,098,108)
Common stock issued as commitment fee for Convertible Note (in shares)	80,000
Common stock issued as commitment fee for Convertible Note	$ 80	531,649			531,729
BALANCE (in shares) at Jun. 30, 2021	21,777,373
BALANCE at Jun. 30, 2021	$ 21,777	70,656,769	(47,612,505)	(3,989,487)	19,076,554
Common stock issued in settlement of RSUs (in shares)	8,333
Common stock issued in settlement of RSUs	$ 8	(8)			0
Stock-based compensation		127,519			127,519
Currency translation, net				(603,894)	(603,894)
Net (Loss)			(2,903,956)		(2,903,956)
Exchange of common stock to prefunded warrants (in shares)	(500,000)
Exchange of common stock to prefunded warrants	$ (500)	500			0
BALANCE (in shares) at Sep. 30, 2021	21,285,706
BALANCE at Sep. 30, 2021	$ 21,285	70,784,780	(50,516,461)	(4,593,381)	15,696,223
BALANCE (in shares) at Dec. 31, 2021	21,285,706
BALANCE at Dec. 31, 2021	$ 21,285	70,910,092	(53,181,928)	(4,975,399)	12,774,860
Common stock issued in settlement of RSUs (in shares)	66,982
Common stock issued in settlement of RSUs	$ 67	(67)
Stock-based compensation		178,778			178,778
Currency translation, net				(355,891)	(355,891)
Net (Loss)			(3,746,424)		(3,746,424)
BALANCE (in shares) at Mar. 31, 2022	21,352,688
BALANCE at Mar. 31, 2022	$ 21,352	71,089,613	(56,928,352)	(5,331,290)	8,851,323
BALANCE (in shares) at Dec. 31, 2021	21,285,706
BALANCE at Dec. 31, 2021	$ 21,285	70,910,092	(53,181,928)	(4,975,399)	12,774,860
Currency translation, net					(2,616,504)
Net (Loss)					(12,006,147)
BALANCE (in shares) at Sep. 30, 2022	43,896,871
BALANCE at Sep. 30, 2022	$ 43,896	96,785,016	(65,188,075)	(7,591,903)	24,048,934
BALANCE (in shares) at Mar. 31, 2022	21,352,688
BALANCE at Mar. 31, 2022	$ 21,352	71,089,613	(56,928,352)	(5,331,290)	8,851,323
Stock-based compensation		221,472			221,472
Currency translation, net				(614,575)	(614,575)
Net (Loss)			(6,507,059)		(6,507,059)
Common shares issued for cash at $0.50 per share, net of offering cost of $1,996,469, in May 2022 (in shares)	22,535,850
Common shares issued for cash at $0.50 per share, net of offering cost of $1,996,469, in May 2022	$ 22,536	24,430,992			24,453,528
Warrants issued in connection with Senior Promissory Notes		664,704			664,704
Adjustment to warrants issued in connection with Senior Promissory Notes		(664,704)			(664,704)
BALANCE (in shares) at Jun. 30, 2022	43,888,538
BALANCE at Jun. 30, 2022	$ 43,888	96,406,781	(63,435,411)	(5,945,865)	27,069,393
Common stock issued in settlement of RSUs (in shares)	8,333
Common stock issued in settlement of RSUs	$ 8	(8)
Stock-based compensation		382,111			382,111
Currency translation, net				(1,646,038)	(1,646,038)
Net (Loss)			(1,752,664)		(1,752,664)
Warrants issued in connection with Senior Promissory Notes		3,868			3,868
Adjustment to warrants issued in connection with Senior Promissory Notes		(3,868)			(3,868)
BALANCE (in shares) at Sep. 30, 2022	43,896,871
BALANCE at Sep. 30, 2022	$ 43,896	$ 96,785,016	$ (65,188,075)	$ (7,591,903)	$ 24,048,934

Condensed Consolidated Statem_4

Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (Parentheticals)	3 Months Ended
	Jun. 30, 2022 USD ($) $ / shares
Shares issued, offering cost | $	$ 1,996,469
Shares issued, offering cost per share (in dollars per share) | $ / shares	$ 0.50

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash Flows from Operating Activities:
Net Loss	$ (12,006,147)	$ (8,461,493)
Adjustments to reconcile net loss to net cash provided by (used in) operations:
Depreciation and amortization	2,260,060	1,968,011
Amortization of discount on Notes payable	2,304,054	543,933
Stock-based compensation	782,361	354,983
Change in deferred tax asset / liability	(42,274)	(47,650)
Gain on lease termination	(150,258)	0
Gain on sale of fixed assets	(642)	(1,126)
Changes in operating assets and liabilities:
Accounts receivable	(1,262,577)	741,514
Inventory	5,728	94,319
Contract assets	(485,469)	628,368
Prepaid expenses and other current assets	(1,497,612)	299,949
Accounts payable	212,304	(188,035)
Accrued expenses	(1,028,428)	599,086
Operating lease liabilities	(409,008)	(755,503)
Contract liabilities	(165,028)	(184,447)
Total Adjustments	523,211	4,053,402
Net Cash used in Operating Activities	(11,482,936)	(4,408,091)
Cash Flows from Investing Activities:
Purchase of property and equipment	(792,523)	(932,293)
Proceeds from sale of fixed assets	642	1,126
Net cash paid for earn-out agreement	0	(321,574)
Net Cash used in Investing Activities	(791,881)	(1,252,741)
Cash Flows from Financing Activities:
Payments on finance lease obligation	(259,197)	(287,526)
Proceeds from issuance of common stock and prefunded warrants	24,418,612	0
Proceeds from issuance of Senior Promissory Notes	6,000,000	0
Payments on Convertible Note	(16,800,000)	14,283,333
Net Cash provided by Financing Activities	13,359,415	13,995,807
Gain (Loss) on Currency Translation	(968,601)	(907,085)
Net change in Cash and Restricted Cash	115,997	7,427,890
Cash and Restricted Cash at Beginning of Period	17,489,380	13,264,449
Cash and Restricted Cash at End of Period	17,605,377	20,692,339
Supplemental Disclosures of Cash Flow Information:
Interest	364,846	483,321
Income Taxes	0	0
Non-cash financing activities
Common Stock issued for conversion of Convertible Note	0	531,729
Debt discount on Senior Promissory Notes	695,749	0
Convertible Debt [Member]
Non-cash financing activities
Original issue discount on Convertible Note	0	1,800,000
Convertible Note debt conversion feature	0	3,048,396
Debt issuance costs on Convertible Note	$ 0	$ 716,667

Note 1 - Summary of Significant

Note 1 - Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Significant Accounting Policies [Text Block]	NOTE 1 Business and Basis of Presentation The consolidated financial statements include the accounts of LiqTech International, Inc., the “Company” and its subsidiaries. The terms "Company", “us", "we" and "our" as used in this report refer to the Company and its subsidiaries, which are set forth below in Item 2, Consolidation -- Functional Currency / Foreign currency translation -- nine September 30, 2022 2021. Cash and Restricted Cash -- three September 30, 2022 December 31, 2021, Accounts held in each U.S. institution are insured by the Federal Deposit Insurance Company (“FDIC”) up to $250,000. September 30, 2022 December 31, 2021 Accounts Receivable -- The roll-forward of the allowance for doubtful accounts for the periods ended September 30, 2022 December 31, 2021 September 30, 2022 December 31, 2021 Allowance for doubtful accounts at the beginning of the period $ 409,076 $ 498,044 Bad debt expense 91,519 (28,499 ) Receivables written off during the periods (298,850 ) (24,415 ) Effect of currency translation (40,434 ) (36,054 ) Allowance for doubtful accounts at the end of the period $ 161,311 $ 409,076 Inventory first first For inventory produced, standard costs that approximate actual costs, applying the FIFO method, are used to value inventory. Standard costs are reviewed at least annually by management or more often in the event that circumstances indicate a change in cost has occurred. Work in process and finished goods include material, labor, and production overhead costs. The Company adjusts the value of its inventory to the extent management determines that the cost cannot be recovered due to obsolescence or other factors. Inventory valuation adjustments for excess and obsolete inventory are calculated based on current inventory levels, movement, expected useful lives, and estimated future demand of the products and spare parts. Contracts Assets / Liabilities not Contract assets also include unbilled receivables, which usually comprise the last invoice remaining after the delivery of the water treatment unit, from which revenue is recognized at the transfer of control based upon signed acceptance by the customer. Most often this invoice is sent to the customer at commissioning of the product or no 12 Leases -- not 12 not not may Property and Equipment -- three ten Goodwill and Intangible Assets -- not Acquired intangible assets with determinable useful lives are amortized on a straight-line or accelerated basis over the estimated periods benefited, ranging from one ten five The Company evaluates the recoverability of long-lived assets by comparing the carrying amount of an asset to the estimated future net undiscounted cash flows generated by the asset. If such assets are considered to be impaired, the impairment recognized is measured as the amount by which the carrying value of the assets exceeds the fair value of the assets. The evaluation of recoverability involves estimates of future operating cash flows based upon certain forecasted assumptions, including, but not Goodwill is not Revenue Recognition -- January 1, 2018, 606, 2015, 2016 2017 January 1, 2018. The Company sells products throughout the world, and sales by geographical region are as follows for the three nine September 30, 2022 2021: For the Three Months For the Nine Months Ended September 30, Ended September 30, 2022 2021 2022 2021 Americas $ 382,573 $ 211,575 $ 861,260 $ 573,365 Asia-Pacific 895,696 636,622 2,944,449 3,225,691 Europe 1,903,930 3,294,757 6,651,065 8,358,338 Middle East & Africa 123,335 - 1,504,288 - $ 3,305,534 $ 4,142,954 $ 11,961,062 $ 12,157,394 The Company’s sales by product and service are as follows for the three nine September 30, 2022 2021: For the Three Months For the Nine Months Ended September 30, Ended September 30, 2022 2021 2022 2021 Water $ 785,046 $ 1,493,549 $ 3,522,049 $ 3,730,889 Ceramics 1,854,981 1,703,057 5,548,951 5,444,863 Plastics 665,507 855,896 2,839,809 2,686,292 Corporate - 90,452 50,253 295,350 $ 3,305,534 $ 4,142,954 $ 11,961,062 $ 12,157,394 For Water (systems and aftermarket), Ceramics (diesel particulate filters and membranes), and Plastics (components), revenue is recognized when performance obligations specified within the terms of a contract with the customer are satisfied, which occurs when control of the product transfers to the customer or when services are rendered by the Company. The majority of the Company's sales contracts contain performance obligations satisfied at a point in time when title along with risks and rewards of ownership have transferred to the customer. This generally occurs when the product is shipped or accepted by the customer. Revenue for service contracts is recognized as the services are provided. Revenue is measured as the amount of consideration expected to be received in exchange for transferring the goods or providing services. The satisfaction of performance obligations under the terms of a revenue contract generally gives rise to the right to receive payment from the customer. The Company's standard payment terms vary by the type and location of the customer and the products or services offered. Generally, the time between when revenue is recognized and when payment is due is not not For contracts with customers that include multiple performance obligations, judgment is required to determine whether performance obligations specified in these contracts are distinct and should be accounted for as separate revenue transactions for recognition purposes. For such arrangements, revenue is allocated to each performance obligation based on its relative standalone selling price. Standalone selling prices are generally determined based on the prices charged to customers or using expected cost-plus margin. System sales are recognized when the Company transfers control to the customer based upon sales and delivery conditions specified in the sales contract. This typically occurs upon shipment of the system from the production facility but can also occur upon other agreed delivery terms. In connection with the completion of the system, it is normal procedure to issue a FAT (Factory Acceptance Test) asserting that the customer has accepted the performance of the system as it is being shipped from our production facility in Hobro. As part of the performance obligation, the customer is normally offered commissioning services (final assembly and configuration at a place designated by the customer), and this commissioning is therefore considered a second second first Aftermarket sales represent parts, extended warranties and maintenance services. For the sale of aftermarket parts, the Company transfers control and recognizes revenue when parts are shipped to the customer. When customers are given the right to return eligible parts and accessories, the Company estimates the expected returns based on an analysis of historical experience. The Company adjusts estimated revenues at the earlier of when the most likely amount of consideration expected to be received changes or when the consideration becomes fixed. The Company recognizes revenue for extended warranty and maintenance agreements based on the standalone selling price over the life of the contract. The Company has received long-term contracts for grants from government entities for the development and use of silicon carbide membranes in various water filtration and treatment applications and historically in the installation of various water filtration systems. We measure the transfer of control of the performance obligation on long-term contracts utilizing the cost-to-cost measure of progress, with cost of revenue including direct costs such as labor and materials. Under the cost-to-cost approach, the use of estimated costs to complete each performance obligation is a significant variable in the process of determining recognized revenue and a significant factor in the accounting for such performance obligations. The timing of when we bill our customers is generally dependent upon advance billings terms, milestone billings based on completion of certain phases of the work, or when services are provided or products are shipped. Projects with performance obligations recognized over time that have costs and estimated earnings recognized to date in excess of cumulative billings are reported on our balance sheet as Contract assets. Projects with performance obligations recognized over time that have cumulative billings in excess of costs and estimated earnings recognized to date are reported on our balance sheet as Contract liabilities. Contract assets represent the Company’s rights to consideration in exchange for goods or services and is recognized when a performance obligation has been satisfied but has not third second The roll-forward of Contract assets / liabilities for the periods ended September 30, 2022, December 31, 2021 September 30, 2022 December 31, 2021 Cost incurred $ 3,602,967 $ 3,381,994 Unbilled project deliveries 667,670 454,158 VAT 383,701 542,255 Other receivables 9,240 60,158 Prepayments (3,082,635 ) (2,947,736 ) Deferred Revenue (137,638 ) (499,146 ) $ 1,443,305 $ 991,682 Distributed as follows: Contract assets $ 2,078,472 $ 1,906,510 Contract liabilities (635,167 ) (914,828 ) $ 1,443,305 $ 991,682 Advertising Cost -- three September 30, 2022 2021 nine September 30, 2022 2021, Research and Development Cost -- three September 30, 2022 2021 nine September 30, 2022 2021, Income Taxes -- 740, Income/(Loss) Per Share -- 260, not Stock Awards -- 718, Fair Value of Financial Instruments -- 820. three ● Level 1. ● Level 2. ● Level 3. no Unless otherwise disclosed, the fair value of the Company’s financial instruments including cash, accounts receivable, other receivables, prepaid expenses, accounts payable, accrued expenses, Senior Promissory Notes and Convertible Notes payable approximate their recorded values due to their short-term maturities. Accounting Estimates -- Recent Accounting Pronouncements November 2021, 2021 10, 1 2 3 January 1, 2022. 2021 10 In August 2020, 2020 06 2020 06 no 2020 06 no 2020 06 December 15, 2021, 2020 06 December 15, 2023, no December 15, 2020, 2020 06 January 1, 2022, In March 2020, 2020 04, 848 December 31, 2022. Other recent accounting pronouncements issued by the FASB did not not

Note 2 - Going Concern

Note 2 - Going Concern	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Substantial Doubt about Going Concern [Text Block]	NOTE 2 GOING CONCERN The accompanying consolidated financial statements have been prepared in conformity with generally accepted accounting principles of the United States of America, which contemplate continuation of the Company as a going concern; however, the Company has incurred significant recent losses, which raises substantial doubt about the ability of the Company to continue as a going concern for a period of one no not

Note 3 - Restructuring Costs

Note 3 - Restructuring Costs	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	NOTE 3 RESTRUCTURING COSTS During the second CEO separation May 10, 2022, May 12, 2022. March 17, 2022. DKK1,605,000 six Terminated employees second 2022, No China close-down second 2022, Capex commitments second second 2022. second Write-downs -- The Company’s restructuring costs are as follows for the nine September 30, 2022, September 30, 2022: September 30, 2022 CEO separation $ 230,538 Terminated employees 159,841 China close-down 278,391 Capex commitments 697,213 Write-downs 420,880 $ 1,786,863 The following table displays a roll-forward of the restructuring accruals, presented within “accrued expenses”, for the nine September 30, 2022 2021: 2022 2021 Restructuring accruals, January 1 $ - $ - Restructuring costs, net 1,786,863 - Cash payments (1,342,135 ) - Asset impairments (420,880 ) - Restructuring accruals, September 30 $ 23,848 $ -

Note 4 - Inventory

Note 4 - Inventory	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Inventory Disclosure [Text Block]	NOTE 4 Inventory consisted of the following on September 30, 2022, December 31, 2021: September 30, 2022 December 31, 2021 Furnace parts and supplies $ 609,550 $ 213,224 Raw materials 2,157,268 2,144,067 Work in process 936,059 1,671,290 Finished goods and filtration systems 1,532,387 1,660,907 Reserve for obsolescence (578,076 ) (268,470 ) Net Inventory $ 4,657,188 $ 5,421,027 Inventory valuation adjustments for excess and obsolete inventory are calculated based on current inventory levels, movements, expected useful lives, and estimated future demand for the products. During the third

Note 5 - Leases

Note 5 - Leases	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Lessee, Operating and Finance Leases [Text Block]	NOTE 5 - LEASES The Company leases certain vehicles, real property, production equipment and office equipment under lease agreements. The Company evaluates each lease to determine its appropriate classification as an operating lease or finance lease for financial reporting purposes. The majority of our operating leases are non-cancelable operating leases for production and office space in Hobro, Aarhus and Copenhagen, Denmark. During the second 2022, During the nine September 30, 2022, During the nine September 30, 2022, Supplemental balance sheet information related to leases as of September 30, 2022, December 31, 2021 September 30, 2022 December 31, 2021 Operating leases Operating lease right-of-use assets $ 3,119,806 $ 6,925,807 Operating lease liabilities – current $ 511,240 $ 846,544 Operating lease liabilities – long-term 2,608,566 6,154,064 Total operating lease liabilities $ 3,119,806 $ 7,000,608 Finance leases Property and equipment, at cost $ 2,852,356 $ 3,334,830 Accumulated depreciation (424,959 ) (336,337 ) Property and equipment, net $ 2,427,397 $ 2,998,494 Finance lease liabilities – current $ 321,788 $ 373,824 Finance lease liabilities – long-term 1,911,361 2,499,591 Total finance lease liabilities $ 2,233,149 $ 2,873,415 Weighted average remaining lease term: Operating leases 9.6 8.9 Finance leases 5.2 5.9 Weighted average discount rate: Operating leases 6.2 % 6.5 % Finance leases 2.8 % 2.8 % Maturities of lease liabilities at September 30, 2022 Operating Lease Finance lease 2022 (remaining 3 months) $ 176,803 $ 97,263 2023 681,709 389,052 2024 552,318 389,876 2025 287,898 386,752 2026 278,383 354,565 Thereafter 2,157,468 846,130 Total payment under lease agreements 4,134,579 2,463,638 Less imputed interest (1,014,773 ) (230,489 ) Total lease liability $ 3,119,806 $ 2,233,149

Note 6 - Lines of Credit

Note 6 - Lines of Credit	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Debt Disclosure [Text Block]	NOTE 6 - LINES OF CREDIT In connection with certain orders, the Company provides to customers a working guarantee, prepayment guarantee or security bond. For that purpose, the Company has a guaranteed credit line of EUR 1,350,000 (approx. $1,315,000) secured by a cash deposit. As of September 30, 2022,

Note 7 - Long-term Debt

Note 7 - Long-term Debt	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Long-Term Debt [Text Block]	NOTE 7 LONG-TERM DEBT Convertible Note On March 24, 2021, October 1, 2023 April 8, 2021, The Note was a senior, unsecured obligation of the Company, payable at 112% of the principal amount at maturity ( October 1, 2023), 100.6749 $1,000 Beginning on March 1, 2022, first 90% three 3 10 no March 1, 2022, first As of June 22, 2022, The components of the Convertible Note are as follows: September 30, 2022 December 31, 2021 Convertible Note $ - 16,800,000 Less: unamortized debt issuance costs - (2,213,064 ) Convertible Note payable $ - $ 14,586,936 Current portion of Convertible Note payable - 8,400,000 Convertible Note payable, less current portion - 6,186,936 Convertible Note payable $ - $ 14,586,936 For the three September 30, 2022 2021, For the nine September 30, 2022 2021, Senior Promissory Notes On June 22, 2022, 21 April 21 April The Notes have a term of 24 months and do not not second Additionally, as part of the transaction, the Company issued 230,000 warrants to the placement agent. All of the warrants issued in this transaction have an exercise price of $0.65 per share, a term of five As a result, the Company recorded an initial debt discount of $664,704, based on the relative fair value of the warrants and notes issued. The Company determined the fair value of the warrants by using the Black-Scholes Option Pricing Model, with the following assumptions: expected term of 2.5 years, stock price of $0.43, exercise price of $0.65, volatility of 80.8%, risk-free rate of 3.13%, and no The components of notes payable are as follows: September 30, 2022 December 31, 2021 Senior Promissory Notes $ 6,000,000 - Less: unamortized debt discount (604,760 ) - Senior Promissory Notes payable $ 5,395,240 $ - Current portion of Senior Promissory Notes payable - - Senior Promissory Notes payable, less current portion 5,395,240 - Senior Promissory Notes payable $ 5,395,240 $ - For the three September 30, 2022, 2021, For the nine September 30, 2022, 2021,

Note 8 - Agreements and Commitm

Note 8 - Agreements and Commitments	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	NOTE 8 - AGREEMENTS AND COMMITMENTS Contingencies -- may The Company has during the third 2019, fourth 2023. Product Warranties one three may In addition, the Company sells an extended warranty for certain systems, which generally provides a warranty for up to four The Company periodically assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary. Factors that affect the warranty liability include the number of units sold, historical and anticipated rates of warranty claims and the cost per claim. Changes in the Company's warranty obligations included in accrued expenses on the balance sheet, as of September 30, 2022 December 31, 2021, September 30, 2022 December 31, 2021 Balance at January 1 $ 962,313 $ 1,056,613 Warranty costs charged to cost of goods sold 52,990 177,302 Utilization charges against reserve (77,720 ) (191,068 ) Release of accrual related to expired warranties - - Foreign currency effect (132,653 ) (80,534 ) Balance at the end of the period $ 804,930 $ 962,313

Note 9 - Earnings Per Share

Note 9 - Earnings Per Share	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Earnings Per Share [Text Block]	NOTE 9 - EARNINGS PER SHARE Basic and diluted net income (loss) per common share is determined by dividing net income (loss) by the weighted average number of shares of Common Stock outstanding during the period. For the periods where there is a net loss, stock options, warrants and Restricted Stock Units (“RSUs”) have been excluded from the calculation of diluted net loss per common share because their effect would be anti-dilutive. Consequently, the weighted average number of shares of Common Stock used to calculate both basic and diluted net loss per common share is the same for the reported periods. For the period ended September 30, 2022, The following table shows the amounts used in computing earnings per share and the weighted average number of shares of potentially dilutive Common Stock for the three nine September 30, 2022, 2021: For the Three Months For the Nine Months Ended September 30, Ended September 30, 2022 2021 2022 2021 Net (Loss) (1,752,664 ) (2,903,956 ) (12,006,147 ) (8,461,493 ) Weighted average number of common shares used in basic earnings per share 43,891,799 21,769,461 32,529,152 21,661,945 Effect of dilutive securities, stock options, RSUs, and warrants - - - - Weighted average number of common shares and potential dilutive common shares outstanding used in dilutive earnings per share 43,891,799 21,769,461 32,529,152 21,661,945 For the three nine September 30, 2022 2021,

Note 10 - Stockholders' Equity

Note 10 - Stockholders' Equity	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	NOTE 10 - STOCKHOLDERS' EQUITY Common Stock September 30, 2022 2021, Voting -- one not Dividends -- may may Liquidation Rights -- Other Matters -- no no Preferred Stock -- one may may The Company has 2,500,000 authorized shares of preferred stock, $0.001 par value. As of September 30, 2022, Stock Issuance Since January 1, 2022, On January 3, 2022, 2021. On January 3, 2022, 2021. On May 17, 2022, On May 19, 2022, $26,450,000 On August 25, 2022, Warrants On August 17, 2021, 500,000 August 17, 2021, On May 17, 2022, $23,000,000 On June 23, 2022, 21 April 21 April five Below is a summary of the periodic changes in warrants outstanding for the nine September 30, 2022 2021: 2022 2021 Warrants outstanding at January 1 1,015,000 515,000 Warrants issued in connection with public offering and private placement 34,905,000 - Common stock exchanged to prefunded warrant 500,000 Exercises and conversions - - Warrants outstanding at September 30 35,920,000 1,015,000 Stock-based Compensation In 2013, September 30, 2022, three third January 2023 ( September 13, 2022) three The Company recognizes compensation costs for RSU grants to directors and management based on the stock price on the date of the grant. The Company recognized stock-based compensation expense related to RSU grants of $382,111 and $127,519 for the three September 30, 2022 2021, nine September 30, 2022, 2021, September 30, 2022, A summary of the status of the RSUs as of September 30, 2022 September 30, 2022 Number of units Weighted Average Grant-Date Fair value Aggregated Intrinsic Value Outstanding, December 31, 2021 149,636 $ 6.59 $ - Granted 2,574,871 0.77 - Vested and settled with share issuance (75,315 ) (6.59 ) - Forfeited (144,853 ) (6.22 ) - Outstanding, September 30, 2022 2,504,340 $ 0.63 $ -

Note 11 - Significant Customers

Note 11 - Significant Customers / Concentration / Disaggregated Revenue	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Concentration Risk Disclosure [Text Block]	NOTE 11 SIGNIFICANT CUSTOMERS / CONCENTRATION / DISAGGREGATED REVENUE The following table presents customers accounting for 10% For the Three Months For the Nine Months Ended September 30, Ended September 30, 2022 2021 2022 2021 Customer A 14 % 11 % 17 % 11 % Customer B 12 % * * * Customer C 11 % * * * Customer D * * 12 % * Customer E * * * 21 % Customer F * * * 10 % * Zero or less than 10% The following table presents customers accounting for 10% September 30, 2022 December 31, 2021 Customer A 14 % * Customer C 11 % * Customer E * 16 % Customer G * 11 % * Zero or less than 10% As of September 30, 2022, December 31, 2021,

Note 12 - Segment Reporting

Note 12 - Segment Reporting	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	NOTE 12 SEGMENT REPORTING The Company operates in three January 1, 2020, 2020. Segment information for the business areas is as follows: For the Three Months Ended For the Nine Months Ended September 30, September 30, 2022 2021 2022 2021 Revenue Water $ 785,046 $ 1,493,549 $ 3,522,049 $ 3,730,889 Ceramics 1,854,981 1,703,057 5,548,951 5,444,863 Plastics 665,507 855,896 2,839,809 2,686,292 Corporate - 90,452 50,253 295,350 Total consolidated Revenue 3,305,534 4,142,954 11,961,062 12,157,394 For the Three Months Ended For the Nine Months Ended September 30, September 30, 2022 2021 2022 2021 Income (Loss) Water $ (107,681 ) $ (531,868 ) $ (864,378 ) $ (2,112,430 ) Ceramics (772,862 ) (798,615 ) (3,519,182 ) (2,681,013 ) Plastics (152,492 ) (358,880 ) (392,092 ) (887,184 ) Other (719,629 ) (1,214,593 ) (7,230,495 ) (2,780,866 ) Total consolidated Loss (1,752,664 ) (2,903,956 ) (12,006,147 ) (8,461,493 ) As of September 30, 2022 December 31, 2021 Total Assets Water $ 6,874,447 $ 7,767,679 Ceramics 13,889,897 13,961,057 Plastics 1,207,357 1,645,879 Other 18,679,632 21,680,077 Total consolidated Assets $ 40,651,333 $ 45,054,692

Note 13 - Subsequent Events

Note 13 - Subsequent Events	9 Months Ended
	Sep. 30, 2022
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 13 - SUBSEQUENT EVENTS None.

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Business and Basis of Presentation The consolidated financial statements include the accounts of LiqTech International, Inc., the “Company” and its subsidiaries. The terms "Company", “us", "we" and "our" as used in this report refer to the Company and its subsidiaries, which are set forth below in Item 2, Consolidation --
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Functional Currency / Foreign currency translation -- nine September 30, 2022 2021.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Restricted Cash -- three September 30, 2022 December 31, 2021, Accounts held in each U.S. institution are insured by the Federal Deposit Insurance Company (“FDIC”) up to $250,000. September 30, 2022 December 31, 2021
Accounts Receivable [Policy Text Block]	Accounts Receivable -- The roll-forward of the allowance for doubtful accounts for the periods ended September 30, 2022 December 31, 2021 September 30, 2022 December 31, 2021 Allowance for doubtful accounts at the beginning of the period $ 409,076 $ 498,044 Bad debt expense 91,519 (28,499 ) Receivables written off during the periods (298,850 ) (24,415 ) Effect of currency translation (40,434 ) (36,054 ) Allowance for doubtful accounts at the end of the period $ 161,311 $ 409,076
Inventory, Policy [Policy Text Block]	Inventory first first For inventory produced, standard costs that approximate actual costs, applying the FIFO method, are used to value inventory. Standard costs are reviewed at least annually by management or more often in the event that circumstances indicate a change in cost has occurred. Work in process and finished goods include material, labor, and production overhead costs. The Company adjusts the value of its inventory to the extent management determines that the cost cannot be recovered due to obsolescence or other factors. Inventory valuation adjustments for excess and obsolete inventory are calculated based on current inventory levels, movement, expected useful lives, and estimated future demand of the products and spare parts.
Receivable [Policy Text Block]	Contracts Assets / Liabilities not Contract assets also include unbilled receivables, which usually comprise the last invoice remaining after the delivery of the water treatment unit, from which revenue is recognized at the transfer of control based upon signed acceptance by the customer. Most often this invoice is sent to the customer at commissioning of the product or no 12
Lessee, Leases [Policy Text Block]	Leases -- not 12 not not may
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment -- three ten
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and Intangible Assets -- not Acquired intangible assets with determinable useful lives are amortized on a straight-line or accelerated basis over the estimated periods benefited, ranging from one ten five The Company evaluates the recoverability of long-lived assets by comparing the carrying amount of an asset to the estimated future net undiscounted cash flows generated by the asset. If such assets are considered to be impaired, the impairment recognized is measured as the amount by which the carrying value of the assets exceeds the fair value of the assets. The evaluation of recoverability involves estimates of future operating cash flows based upon certain forecasted assumptions, including, but not Goodwill is not
Revenue [Policy Text Block]	Revenue Recognition -- January 1, 2018, 606, 2015, 2016 2017 January 1, 2018. The Company sells products throughout the world, and sales by geographical region are as follows for the three nine September 30, 2022 2021: For the Three Months For the Nine Months Ended September 30, Ended September 30, 2022 2021 2022 2021 Americas $ 382,573 $ 211,575 $ 861,260 $ 573,365 Asia-Pacific 895,696 636,622 2,944,449 3,225,691 Europe 1,903,930 3,294,757 6,651,065 8,358,338 Middle East & Africa 123,335 - 1,504,288 - $ 3,305,534 $ 4,142,954 $ 11,961,062 $ 12,157,394 The Company’s sales by product and service are as follows for the three nine September 30, 2022 2021: For the Three Months For the Nine Months Ended September 30, Ended September 30, 2022 2021 2022 2021 Water $ 785,046 $ 1,493,549 $ 3,522,049 $ 3,730,889 Ceramics 1,854,981 1,703,057 5,548,951 5,444,863 Plastics 665,507 855,896 2,839,809 2,686,292 Corporate - 90,452 50,253 295,350 $ 3,305,534 $ 4,142,954 $ 11,961,062 $ 12,157,394 For Water (systems and aftermarket), Ceramics (diesel particulate filters and membranes), and Plastics (components), revenue is recognized when performance obligations specified within the terms of a contract with the customer are satisfied, which occurs when control of the product transfers to the customer or when services are rendered by the Company. The majority of the Company's sales contracts contain performance obligations satisfied at a point in time when title along with risks and rewards of ownership have transferred to the customer. This generally occurs when the product is shipped or accepted by the customer. Revenue for service contracts is recognized as the services are provided. Revenue is measured as the amount of consideration expected to be received in exchange for transferring the goods or providing services. The satisfaction of performance obligations under the terms of a revenue contract generally gives rise to the right to receive payment from the customer. The Company's standard payment terms vary by the type and location of the customer and the products or services offered. Generally, the time between when revenue is recognized and when payment is due is not not For contracts with customers that include multiple performance obligations, judgment is required to determine whether performance obligations specified in these contracts are distinct and should be accounted for as separate revenue transactions for recognition purposes. For such arrangements, revenue is allocated to each performance obligation based on its relative standalone selling price. Standalone selling prices are generally determined based on the prices charged to customers or using expected cost-plus margin. System sales are recognized when the Company transfers control to the customer based upon sales and delivery conditions specified in the sales contract. This typically occurs upon shipment of the system from the production facility but can also occur upon other agreed delivery terms. In connection with the completion of the system, it is normal procedure to issue a FAT (Factory Acceptance Test) asserting that the customer has accepted the performance of the system as it is being shipped from our production facility in Hobro. As part of the performance obligation, the customer is normally offered commissioning services (final assembly and configuration at a place designated by the customer), and this commissioning is therefore considered a second second first Aftermarket sales represent parts, extended warranties and maintenance services. For the sale of aftermarket parts, the Company transfers control and recognizes revenue when parts are shipped to the customer. When customers are given the right to return eligible parts and accessories, the Company estimates the expected returns based on an analysis of historical experience. The Company adjusts estimated revenues at the earlier of when the most likely amount of consideration expected to be received changes or when the consideration becomes fixed. The Company recognizes revenue for extended warranty and maintenance agreements based on the standalone selling price over the life of the contract. The Company has received long-term contracts for grants from government entities for the development and use of silicon carbide membranes in various water filtration and treatment applications and historically in the installation of various water filtration systems. We measure the transfer of control of the performance obligation on long-term contracts utilizing the cost-to-cost measure of progress, with cost of revenue including direct costs such as labor and materials. Under the cost-to-cost approach, the use of estimated costs to complete each performance obligation is a significant variable in the process of determining recognized revenue and a significant factor in the accounting for such performance obligations. The timing of when we bill our customers is generally dependent upon advance billings terms, milestone billings based on completion of certain phases of the work, or when services are provided or products are shipped. Projects with performance obligations recognized over time that have costs and estimated earnings recognized to date in excess of cumulative billings are reported on our balance sheet as Contract assets. Projects with performance obligations recognized over time that have cumulative billings in excess of costs and estimated earnings recognized to date are reported on our balance sheet as Contract liabilities. Contract assets represent the Company’s rights to consideration in exchange for goods or services and is recognized when a performance obligation has been satisfied but has not third second The roll-forward of Contract assets / liabilities for the periods ended September 30, 2022, December 31, 2021 September 30, 2022 December 31, 2021 Cost incurred $ 3,602,967 $ 3,381,994 Unbilled project deliveries 667,670 454,158 VAT 383,701 542,255 Other receivables 9,240 60,158 Prepayments (3,082,635 ) (2,947,736 ) Deferred Revenue (137,638 ) (499,146 ) $ 1,443,305 $ 991,682 Distributed as follows: Contract assets $ 2,078,472 $ 1,906,510 Contract liabilities (635,167 ) (914,828 ) $ 1,443,305 $ 991,682
Advertising Cost [Policy Text Block]	Advertising Cost -- three September 30, 2022 2021 nine September 30, 2022 2021,
Research and Development Expense, Policy [Policy Text Block]	Research and Development Cost -- three September 30, 2022 2021 nine September 30, 2022 2021,
Income Tax, Policy [Policy Text Block]	Income Taxes -- 740,
Earnings Per Share, Policy [Policy Text Block]	Income/(Loss) Per Share -- 260, not
Share-Based Payment Arrangement [Policy Text Block]	Stock Awards -- 718,
Fair Value Measurement, Policy [Policy Text Block]	Fair Value of Financial Instruments -- 820. three ● Level 1. ● Level 2. ● Level 3. no Unless otherwise disclosed, the fair value of the Company’s financial instruments including cash, accounts receivable, other receivables, prepaid expenses, accounts payable, accrued expenses, Senior Promissory Notes and Convertible Notes payable approximate their recorded values due to their short-term maturities.
Use of Estimates, Policy [Policy Text Block]	Accounting Estimates --
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements November 2021, 2021 10, 1 2 3 January 1, 2022. 2021 10 In August 2020, 2020 06 2020 06 no 2020 06 no 2020 06 December 15, 2021, 2020 06 December 15, 2023, no December 15, 2020, 2020 06 January 1, 2022, In March 2020, 2020 04, 848 December 31, 2022. Other recent accounting pronouncements issued by the FASB did not not

Note 1 - Summary of Significa_2

Note 1 - Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2022
Notes Tables
Financing Receivable, Allowance for Credit Loss [Table Text Block]	September 30, 2022 December 31, 2021 Allowance for doubtful accounts at the beginning of the period $ 409,076 $ 498,044 Bad debt expense 91,519 (28,499 ) Receivables written off during the periods (298,850 ) (24,415 ) Effect of currency translation (40,434 ) (36,054 ) Allowance for doubtful accounts at the end of the period $ 161,311 $ 409,076
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	For the Three Months For the Nine Months Ended September 30, Ended September 30, 2022 2021 2022 2021 Americas $ 382,573 $ 211,575 $ 861,260 $ 573,365 Asia-Pacific 895,696 636,622 2,944,449 3,225,691 Europe 1,903,930 3,294,757 6,651,065 8,358,338 Middle East & Africa 123,335 - 1,504,288 - $ 3,305,534 $ 4,142,954 $ 11,961,062 $ 12,157,394
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	For the Three Months For the Nine Months Ended September 30, Ended September 30, 2022 2021 2022 2021 Water $ 785,046 $ 1,493,549 $ 3,522,049 $ 3,730,889 Ceramics 1,854,981 1,703,057 5,548,951 5,444,863 Plastics 665,507 855,896 2,839,809 2,686,292 Corporate - 90,452 50,253 295,350 $ 3,305,534 $ 4,142,954 $ 11,961,062 $ 12,157,394
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]	September 30, 2022 December 31, 2021 Cost incurred $ 3,602,967 $ 3,381,994 Unbilled project deliveries 667,670 454,158 VAT 383,701 542,255 Other receivables 9,240 60,158 Prepayments (3,082,635 ) (2,947,736 ) Deferred Revenue (137,638 ) (499,146 ) $ 1,443,305 $ 991,682 Distributed as follows: Contract assets $ 2,078,472 $ 1,906,510 Contract liabilities (635,167 ) (914,828 ) $ 1,443,305 $ 991,682

Note 3 - Restructuring Costs (T

Note 3 - Restructuring Costs (Tables)	9 Months Ended
	Sep. 30, 2022
Notes Tables
Restructuring and Related Costs [Table Text Block]	September 30, 2022 CEO separation $ 230,538 Terminated employees 159,841 China close-down 278,391 Capex commitments 697,213 Write-downs 420,880 $ 1,786,863
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	2022 2021 Restructuring accruals, January 1 $ - $ - Restructuring costs, net 1,786,863 - Cash payments (1,342,135 ) - Asset impairments (420,880 ) - Restructuring accruals, September 30 $ 23,848 $ -

Note 4 - Inventory (Tables)

Note 4 - Inventory (Tables)	9 Months Ended
	Sep. 30, 2022
Notes Tables
Schedule of Inventory, Current [Table Text Block]	September 30, 2022 December 31, 2021 Furnace parts and supplies $ 609,550 $ 213,224 Raw materials 2,157,268 2,144,067 Work in process 936,059 1,671,290 Finished goods and filtration systems 1,532,387 1,660,907 Reserve for obsolescence (578,076 ) (268,470 ) Net Inventory $ 4,657,188 $ 5,421,027

Note 5 - Leases (Tables)

Note 5 - Leases (Tables)	9 Months Ended
	Sep. 30, 2022
Notes Tables
Lessee, Operating and Finance Lease, Assets and Liabilities [Table Text Block]	September 30, 2022 December 31, 2021 Operating leases Operating lease right-of-use assets $ 3,119,806 $ 6,925,807 Operating lease liabilities – current $ 511,240 $ 846,544 Operating lease liabilities – long-term 2,608,566 6,154,064 Total operating lease liabilities $ 3,119,806 $ 7,000,608 Finance leases Property and equipment, at cost $ 2,852,356 $ 3,334,830 Accumulated depreciation (424,959 ) (336,337 ) Property and equipment, net $ 2,427,397 $ 2,998,494 Finance lease liabilities – current $ 321,788 $ 373,824 Finance lease liabilities – long-term 1,911,361 2,499,591 Total finance lease liabilities $ 2,233,149 $ 2,873,415 Weighted average remaining lease term: Operating leases 9.6 8.9 Finance leases 5.2 5.9 Weighted average discount rate: Operating leases 6.2 % 6.5 % Finance leases 2.8 % 2.8 %
Maturity of Operating and Finance Lease Liabilities [Table Text Block]	Operating Lease Finance lease 2022 (remaining 3 months) $ 176,803 $ 97,263 2023 681,709 389,052 2024 552,318 389,876 2025 287,898 386,752 2026 278,383 354,565 Thereafter 2,157,468 846,130 Total payment under lease agreements 4,134,579 2,463,638 Less imputed interest (1,014,773 ) (230,489 ) Total lease liability $ 3,119,806 $ 2,233,149

Note 7 - Long-term Debt (Tables

Note 7 - Long-term Debt (Tables)	9 Months Ended
	Sep. 30, 2022
Notes Tables
Convertible Debt [Table Text Block]	September 30, 2022 December 31, 2021 Convertible Note $ - 16,800,000 Less: unamortized debt issuance costs - (2,213,064 ) Convertible Note payable $ - $ 14,586,936 Current portion of Convertible Note payable - 8,400,000 Convertible Note payable, less current portion - 6,186,936 Convertible Note payable $ - $ 14,586,936
Schedule of Debt [Table Text Block]	September 30, 2022 December 31, 2021 Senior Promissory Notes $ 6,000,000 - Less: unamortized debt discount (604,760 ) - Senior Promissory Notes payable $ 5,395,240 $ - Current portion of Senior Promissory Notes payable - - Senior Promissory Notes payable, less current portion 5,395,240 - Senior Promissory Notes payable $ 5,395,240 $ -

Note 8 - Agreements and Commi_2

Note 8 - Agreements and Commitments (Tables)	9 Months Ended
	Sep. 30, 2022
Notes Tables
Schedule of Product Warranty Liability [Table Text Block]	September 30, 2022 December 31, 2021 Balance at January 1 $ 962,313 $ 1,056,613 Warranty costs charged to cost of goods sold 52,990 177,302 Utilization charges against reserve (77,720 ) (191,068 ) Release of accrual related to expired warranties - - Foreign currency effect (132,653 ) (80,534 ) Balance at the end of the period $ 804,930 $ 962,313

Note 9 - Earnings Per Share (Ta

Note 9 - Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2022
Notes Tables
Schedule of Weighted Average Number of Shares [Table Text Block]	For the Three Months For the Nine Months Ended September 30, Ended September 30, 2022 2021 2022 2021 Net (Loss) (1,752,664 ) (2,903,956 ) (12,006,147 ) (8,461,493 ) Weighted average number of common shares used in basic earnings per share 43,891,799 21,769,461 32,529,152 21,661,945 Effect of dilutive securities, stock options, RSUs, and warrants - - - - Weighted average number of common shares and potential dilutive common shares outstanding used in dilutive earnings per share 43,891,799 21,769,461 32,529,152 21,661,945

Note 10 - Stockholders' Equity

Note 10 - Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2022
Notes Tables
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]	2022 2021 Warrants outstanding at January 1 1,015,000 515,000 Warrants issued in connection with public offering and private placement 34,905,000 - Common stock exchanged to prefunded warrant 500,000 Exercises and conversions - - Warrants outstanding at September 30 35,920,000 1,015,000
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]	September 30, 2022 Number of units Weighted Average Grant-Date Fair value Aggregated Intrinsic Value Outstanding, December 31, 2021 149,636 $ 6.59 $ - Granted 2,574,871 0.77 - Vested and settled with share issuance (75,315 ) (6.59 ) - Forfeited (144,853 ) (6.22 ) - Outstanding, September 30, 2022 2,504,340 $ 0.63 $ -

Note 11 - Significant Custome_2

Note 11 - Significant Customers / Concentration / Disaggregated Revenue (Tables)	9 Months Ended
	Sep. 30, 2022
Notes Tables
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]	For the Three Months For the Nine Months Ended September 30, Ended September 30, 2022 2021 2022 2021 Customer A 14 % 11 % 17 % 11 % Customer B 12 % * * * Customer C 11 % * * * Customer D * * 12 % * Customer E * * * 21 % Customer F * * * 10 % September 30, 2022 December 31, 2021 Customer A 14 % * Customer C 11 % * Customer E * 16 % Customer G * 11 %

Note 12 - Segment Reporting (Ta

Note 12 - Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2022
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	For the Three Months Ended For the Nine Months Ended September 30, September 30, 2022 2021 2022 2021 Revenue Water $ 785,046 $ 1,493,549 $ 3,522,049 $ 3,730,889 Ceramics 1,854,981 1,703,057 5,548,951 5,444,863 Plastics 665,507 855,896 2,839,809 2,686,292 Corporate - 90,452 50,253 295,350 Total consolidated Revenue 3,305,534 4,142,954 11,961,062 12,157,394 For the Three Months Ended For the Nine Months Ended September 30, September 30, 2022 2021 2022 2021 Income (Loss) Water $ (107,681 ) $ (531,868 ) $ (864,378 ) $ (2,112,430 ) Ceramics (772,862 ) (798,615 ) (3,519,182 ) (2,681,013 ) Plastics (152,492 ) (358,880 ) (392,092 ) (887,184 ) Other (719,629 ) (1,214,593 ) (7,230,495 ) (2,780,866 ) Total consolidated Loss (1,752,664 ) (2,903,956 ) (12,006,147 ) (8,461,493 ) As of September 30, 2022 December 31, 2021 Total Assets Water $ 6,874,447 $ 7,767,679 Ceramics 13,889,897 13,961,057 Plastics 1,207,357 1,645,879 Other 18,679,632 21,680,077 Total consolidated Assets $ 40,651,333 $ 45,054,692

Note 1 - Summary of Significa_3

Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Restricted Cash and Cash Equivalents, Current, Total	$ 1,314,637		$ 1,314,637		$ 2,125,695
Cash, Uninsured Amount	14,198,027		14,198,027		$ 11,346,826
Advertising Expense	39,094	$ 41,141	142,522	$ 166,376
Research and Development Expense, Total	$ 283,524	$ 497,823	$ 1,377,097	$ 1,370,059
Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life (Year)			5 years
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)			3 years
Finite-Lived Intangible Asset, Useful Life (Year)			1 year
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)			10 years
Finite-Lived Intangible Asset, Useful Life (Year)			10 years

Note 1 - Summary of Significa_4

Note 1 - Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Allowance for doubtful accounts	$ 409,076	$ 498,044
Bad debt expense	91,519	(28,499)
Receivables written off during the periods	(298,850)	(24,415)
Effect of currency translation	(40,434)	(36,054)
Allowance for doubtful accounts	$ 161,311	$ 409,076

Note 1 - Summary of Significa_5

Note 1 - Summary of Significant Accounting Policies - Net Sales by Geographical Region (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue	$ 3,305,534	$ 4,142,954	$ 11,961,062	$ 12,157,394
Reportable Geographical Components [Member] | Americas [Member]
Revenue	382,573	211,575	861,260	573,365
Reportable Geographical Components [Member] | Asia Pacific [Member]
Revenue	895,696	636,622	2,944,449	3,225,691
Reportable Geographical Components [Member] | Europe [Member]
Revenue	1,903,930	3,294,757	6,651,065	8,358,338
Reportable Geographical Components [Member] | Middle East and Africa [Member]
Revenue	$ 123,335	$ 0	$ 1,504,288	$ 0

Note 1 - Summary of Significa_6

Note 1 - Summary of Significant Accounting Policies - Sales by Product Line (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue	$ 3,305,534	$ 4,142,954	$ 11,961,062	$ 12,157,394
Water Segment [Member]
Revenue	785,046	1,493,549	3,522,049	3,730,889
Ceramics Segment [Member]
Revenue	1,854,981	1,703,057	5,548,951	5,444,863
Plastics Segment [Member]
Revenue	665,507	855,896	2,839,809	2,686,292
Corporate Segment [Member]
Revenue	$ 0	$ 90,452	$ 50,253	$ 295,350

Note 1 - Summary of Significa_7

Note 1 - Summary of Significant Accounting Policies - Contract Assets and Liabilities (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Cost incurred	$ 3,602,967	$ 3,381,994
Unbilled project deliveries	667,670	454,158
VAT	383,701	542,255
Other receivables	9,240	60,158
Prepayments	(3,082,635)	(2,947,736)
Deferred Revenue	(137,638)	(499,146)
Contract with Customer, Asset (Liability), Net	1,443,305	991,682
Contract assets	2,078,472	1,906,510
Contract liabilities	(635,167)	(914,828)
Contract with Customer, Asset (Liability), Net	$ 1,443,305	$ 991,682

Note 3 - Restructuring Costs (D

Note 3 - Restructuring Costs (Details Textual)			3 Months Ended			9 Months Ended
	May 10, 2022 USD ($)	May 10, 2022 DKK (kr)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Restructuring Charges, Total			$ (1,964)		$ 0	$ 1,786,863	$ 0
Restructuring Reserve, Ending Balance			23,848		$ 0	23,848	$ 0		$ 0	$ 0
Capex Commitments [Member]
Other Commitment, Total								$ 9,000,000
CEO Separation [Member]
Restructuring Charges, Total						230,538
Employee Severance [Member]
Restructuring Charges, Total						159,841
Facility Closing [Member]
Restructuring Charges, Total						278,391
Capex Commitments [Member]
Restructuring Charges, Total						697,213
Restructuring Program [Member]
Restructuring Charges, Total				$ 1,786,863
Impairment, Long-Lived Asset, Held-for-Use, Total				243,075
Inventory Write-down				177,804
Restructuring and Related Cost, Incurred Cost						1,763,015
Restructuring and Related Cost, Expected Cost Remaining			23,848			23,848
Restructuring Program [Member] | CEO Separation [Member]
Restructuring Charges, Total	$ 230,538	kr 1,605,000
Restructuring Program [Member] | Employee Severance [Member]
Restructuring Charges, Total				$ 159,841
Restructuring and Related Cost, Percentage Reduction				25%
Restructuring Program [Member] | Facility Closing [Member]
Restructuring Charges, Total				$ 278,391
Restructuring Program [Member] | Capex Commitments [Member]
Restructuring Reserve, Ending Balance			697,213	$ 668,606		$ 697,213
Restructuring Reserve, Accrual Adjustment			$ 28,607

Note 3 - Restructuring Costs -

Note 3 - Restructuring Costs - Restructuring Costs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Restructuring costs	$ (1,964)	$ 0	$ 1,786,863	$ 0
CEO Separation [Member]
Restructuring costs			230,538
Employee Severance [Member]
Restructuring costs			159,841
Facility Closing [Member]
Restructuring costs			278,391
Capex Commitments [Member]
Restructuring costs			697,213
Write-down [Member]
Restructuring costs			$ 420,880

Note 3 - Restructuring Costs _2

Note 3 - Restructuring Costs - Roll-forward of Restructuring Accrual (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Restructuring accruals, January 1			$ 0	$ 0
Restructuring Charges, Total	$ (1,964)	$ 0	1,786,863	0
Cash payments			(1,342,135)	0
Asset impairments			(420,880)	0
Restructuring accruals, September 30	$ 23,848	$ 0	$ 23,848	$ 0

Note 4 - Inventory - Summary of

Note 4 - Inventory - Summary of Inventory (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Furnace parts and supplies	$ 609,550	$ 213,224
Raw materials	2,157,268	2,144,067
Work in process	936,059	1,671,290
Finished goods and filtration systems	1,532,387	1,660,907
Reserve for obsolescence	(578,076)	(268,470)
Net Inventory	$ 4,657,188	$ 5,421,027

Note 5 - Leases (Details Textua

Note 5 - Leases (Details Textual)	9 Months Ended
	Sep. 30, 2022 USD ($)
Finance Lease, Principal Payments	$ 316,246
Finance Lease Expense	221,928
Operating Lease, Payments	733,390
Operating Expense [Member]
Operating Lease, Expense	$ 812,032

Note 5 - Leases - Balance Sheet

Note 5 - Leases - Balance Sheet Information (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Operating lease right-of-use assets	$ 3,119,806	$ 6,925,807
Operating lease liabilities – current	511,240	846,544
Operating lease liabilities – long-term	2,608,566	6,154,064
Total operating lease liability	3,119,806	7,000,608
Property and equipment, at cost	2,852,356	3,334,830
Accumulated depreciation	(424,959)	(336,337)
Property and equipment, net	2,427,397	2,998,494
Finance lease liabilities – current	321,788	373,824
Finance lease liabilities – long-term	1,911,361	2,499,591
Total finance lease liabilities	$ 2,233,149	$ 2,873,415
Operating leases (Year)	9 years 7 months 6 days	8 years 10 months 24 days
Finance leases (Year)	5 years 2 months 12 days	5 years 10 months 24 days
Operating leases	6.20%	6.50%
Finance leases	2.80%	2.80%

Note 5 - Leases - Maturities of

Note 5 - Leases - Maturities of Lease Liabilities (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
2022 (remaining 9 months), operating lease	$ 176,803
2022 (remaining 9 months), finance lease	97,263
2023, operating lease	681,709
2023, finance lease	389,052
2024, operating lease	552,318
2024, finance lease	389,876
2025, operating lease	287,898
2025, finance lease	386,752
2026, operating lease	278,383
2026, finance lease	354,565
Thereafter, operating lease	2,157,468
Thereafter, finance lease	846,130
Total payment under operating lease agreements	4,134,579
Total payment under lease agreements	2,463,638
Less imputed interest on operating lease	(1,014,773)
Less imputed interest on finance lease	(230,489)
Total operating lease liability	3,119,806	$ 7,000,608
Total finance lease liability	$ 2,233,149	$ 2,873,415

Note 6 - Lines of Credit (Detai

Note 6 - Lines of Credit (Details Textual) - Sep. 30, 2022	USD ($)	EUR (€)
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,315,000	€ 1,350,000
Guarantor Obligations, Current Carrying Value	$ 306,327

Note 7 - Long-term Debt (Detail

Note 7 - Long-term Debt (Details Textual)				3 Months Ended		4 Months Ended	9 Months Ended
	Jun. 22, 2022 USD ($) $ / shares shares	Mar. 01, 2022 USD ($)	Apr. 08, 2021 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) $ / shares	Sep. 30, 2021 USD ($)	Jun. 21, 2022 USD ($)	Sep. 30, 2022 USD ($) $ / shares	Sep. 30, 2021 USD ($)	May 17, 2022 $ / shares	Dec. 31, 2021 USD ($) $ / shares
Stock Issued During Period, Shares, Issued for Commitment Fee (in shares) | shares			80,000
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares			$ 0.001	$ 0.001			$ 0.001		$ 0.001	$ 0.001
Senior Promissory Notes Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares	4,250,000
Senior Promissory Notes Placement Agent Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares	230,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares	$ 0.65
Warrants and Rights Outstanding, Term (Year)	5 years
Senior Promissory Notes [Member]
Debt Instrument, Face Amount	$ 6,000,000			$ 6,000,000			$ 6,000,000			$ 0
Interest Expense, Debt, Total				84,098	$ 0		90,989	$ 0
Debt Instrument, Term (Month)	24 months
Debt Instrument, Interest Rate, Stated Percentage	10%
Debt Instrument, Stated Rate, Monthly Increase if Unpaid	1%
Debt Instrument, Unamortized Discount, Total	$ 664,704			604,760			604,760			$ 0
Senior Promissory Notes [Member] | Measurement Input, Expected Term [Member]
Debt Instrument, Measurement Input	2.5
Senior Promissory Notes [Member] | Measurement Input, Share Price [Member]
Debt Instrument, Measurement Input	0.43
Senior Promissory Notes [Member] | Measurement Input, Exercise Price [Member]
Debt Instrument, Measurement Input	0.65
Senior Promissory Notes [Member] | Measurement Input, Price Volatility [Member]
Debt Instrument, Measurement Input	0.808
Senior Promissory Notes [Member] | Measurement Input, Risk Free Interest Rate [Member]
Debt Instrument, Measurement Input	0.0313
Senior Promissory Notes [Member] | Measurement Input, Forfeiture Rate [Member]
Debt Instrument, Measurement Input	0
Senior Promissory Notes [Member] | Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage	16%
Convertible Debt [Member]
Debt Instrument, Face Amount			$ 15,000,000
Debt Instrument, Redemption Price, Percentage			112%
Debt Instrument, Convertible, Conversion Ratio			0.1006749
Debt Instrument, Periodic Payment, Principal		$ 840,000
Debt Instrument, Redemption Covenant, Floor Price (in dollars per share) | $ / shares			$ 1.75
Repayments of Convertible Debt	$ 13,446,875	$ 840,000				$ 3,360,000
Repayments of Convertible Debt, Principal	11,640,000
Repayments of Convertible Debt, Premium	$ 1,806,875
Interest Expense, Debt, Total				0	481,712		308,958	904,350
Amortization of Debt Issuance Costs				$ 0	$ 292,129		$ 2,213,065	$ 360,417

Note 7 - Long-term Debt - Sched

Note 7 - Long-term Debt - Schedule of Convertible Note Payable (Details) - Convertible Debt [Member] - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Convertible Note	$ 0	$ 16,800,000
Less: unamortized debt issuance costs	0	(2,213,064)
Convertible Note payable	0	14,586,936
Current portion of Convertible Note payable	0	8,400,000
Convertible Note payable, less current portion	$ 0	$ 6,186,936

Note 7 - Long-term Debt - Notes

Note 7 - Long-term Debt - Notes Payable (Details) - Senior Promissory Notes [Member] - USD ($)	Sep. 30, 2022	Jun. 22, 2022	Dec. 31, 2021
Senior Promissory Notes	$ 6,000,000	$ 6,000,000	$ 0
Less: unamortized debt discount	(604,760)	$ (664,704)	0
Senior Promissory Notes payable	5,395,240		0
Current portion of Senior Promissory Notes payable	0		0
Senior Promissory Notes payable, less current portion	$ 5,395,240		$ 0

Note 8 - Agreements and Commi_3

Note 8 - Agreements and Commitments (Details Textual) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022
Minimum [Member]
Standard Product Warranty, Term (Year)		1 year
Maximum [Member]
Standard Product Warranty, Term (Year)		3 years
Extended Product Warranty, Term (Year)		4 years
Arbitration Regarding Marine Waste-Water Treatment System Warranty [Member]
Loss Contingency, Damages Sought, Value	$ 1.5

Note 8 - Agreements and Commi_4

Note 8 - Agreements and Commitments - Changes in Warranty Obligations (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Balance	$ 962,313	$ 1,056,613
Warranty costs charged to cost of goods sold	52,990	177,302
Utilization charges against reserve	(77,720)	(191,068)
Release of accrual related to expired warranties	0	0
Foreign currency effect	(132,653)	(80,534)
Balance	$ 804,930	$ 962,313

Note 9 - Earnings Per Share (De

Note 9 - Earnings Per Share (Details Textual) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)			2,504,340
Prefunded Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)			31,440,000
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)			4,480,000
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	0	0	0	0

Note 9 - Earnings Per Share - A

Note 9 - Earnings Per Share - Amounts Used in Computing Earnings Per Share (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Net (Loss)	$ (1,752,664)	$ (6,507,059)	$ (3,746,424)	$ (2,903,956)	$ (3,098,108)	$ (2,459,429)	$ (12,006,147)	$ (8,461,493)
Weighted average number of common shares used in basic earnings per share (in shares)	43,891,799			21,769,461			32,529,152	21,661,945
Effect of dilutive securities, stock options, RSUs, and warrants (in shares)	0			0			0	0
Weighted average number of common shares and potential dilutive common shares outstanding used in dilutive earnings per share (in shares)	43,891,799			21,769,461			32,529,152	21,661,945

Note 10 - Stockholders' Equit_2

Note 10 - Stockholders' Equity (Details Textual) - USD ($)							3 Months Ended			9 Months Ended		12 Months Ended
	Aug. 25, 2022	Jun. 23, 2022	May 19, 2022	May 17, 2022	Jan. 03, 2022	Aug. 17, 2021	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2013	Dec. 31, 2021	Apr. 08, 2021	Dec. 31, 2020
Common Stock, Shares Authorized (in shares)							100,000,000			100,000,000			100,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share)				$ 0.001			$ 0.001			$ 0.001			$ 0.001	$ 0.001
Common Stock, Shares, Outstanding, Ending Balance (in shares)							43,896,871		21,285,706	43,896,871	21,285,706		21,285,706
Preferred Stock, Shares Authorized (in shares)							2,500,000			2,500,000			2,500,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)							$ 0.001			$ 0.001			$ 0.001
Preferred Stock, Shares Issued, Total (in shares)							0			0			0
Proceeds from Issuance or Sale of Equity, Total			$ 26,450,000
Class of Warrant or Right, Outstanding (in shares)							35,920,000		1,015,000	35,920,000	1,015,000		1,015,000		515,000
Stock Issued During Period, Value, New Issues								$ 24,453,528
Payments of Stock Issuance Costs			$ 1,996,472
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total (in shares)	8,333
Class of Warrant or Right, Issued by Exchange, Shares (in shares)						500,000					500,000
Shares Issued, Price Per Share (in dollars per share)								$ 0.50
Class of Warrant or Right, Issued During Period (in shares)										34,905,000	0
Common Stock, Shares, Outstanding, Ending Balance (in shares)							43,896,871		21,285,706	43,896,871	21,285,706		21,285,706
Preferred Stock, Shares Outstanding, Ending Balance (in shares)							0			0			0
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)							2,504,340			2,504,340			149,636
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)										2,574,871
Share-Based Payment Arrangement, Expense							$ 382,111		$ 127,519	$ 782,360	$ 354,983
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount							$ 827,939			$ 827,939
Prefunded Warrants [Member]
Class of Warrant or Right, Outstanding (in shares)				30,425,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)						$ 0.001
Warrant Purchase Agreement [Member]
Proceeds from Issuance or Sale of Equity, Total				$ 15,182,075
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)				$ 0.499
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)				30,425,000
Private Placement Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 0.65
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		4,250,000
Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)				15,635,850
Proceeds from Issuance or Sale of Equity, Total				$ 23,000,000
Shares Issued, Price Per Share (in dollars per share)				$ 0.50
Over-Allotment Option [Member]
Stock Issued During Period, Shares, New Issues (in shares)			6,900,000
Stock Issued During Period, Value, New Issues			$ 3,450,000
Private Placement [Member]
Proceeds from Issuance of Debt		$ 6,000,000
Placement Agent Warrants [Member]
Class of Warrant or Right, Issued During Period (in shares)		230,000
Director [Member]
Stock Issued During Period, Shares, Issued for Services (in shares)					18,641
Director [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)												25,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)												3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Annual Grant												$ 36,750
Management [Member]
Stock Issued During Period, Shares, Issued for Services (in shares)					48,341
Management [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)										722,456
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)										3 years
Management [Member] | Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)										97,456
Board of Directors Chairman [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Annual Grant												$ 73,500
Convertible Preferred Stock [Member]
Preferred Stock, Shares Issued, Total (in shares)							0			0
Preferred Stock, Shares Outstanding, Ending Balance (in shares)							0			0

Note 10 - Stockholders' Equit_3

Note 10 - Stockholders' Equity - Warrants (Details) - shares		9 Months Ended
	Aug. 17, 2021	Sep. 30, 2022	Sep. 30, 2021
Balance, Warrants (in shares)		1,015,000	515,000
Warrants issued in connection with public offering and private placement (in shares)		34,905,000	0
Common stock exchanged to prefunded warrant (in shares)	500,000		500,000
Exercises and conversions (in shares)		0	0
Balance, Warrants (in shares)		35,920,000	1,015,000

Note 10 - Stockholders' Equit_4

Note 10 - Stockholders' Equity - Share Incentive Plan Activity (Details) - Restricted Stock Units (RSUs) [Member] - USD ($)	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Outstanding, units (in shares)	149,636
Outstanding, weighted average grant-date fair value (in dollars per share)	$ 6.59
Outstanding, aggregated intrinsic value	$ 0	$ 0
Granted, units (in shares)	2,574,871
Granted, weighted average grant-date fair value (in dollars per share)	$ 0.77
Vested and settled with share issuance, units (in shares)	(75,315)
Vested and settled with share issuance, weighted average grant-date fair value (in dollars per share)	$ (6.59)
Forfeited, units (in shares)	(144,853)
Forfeited, weighted average grant-date fair value (in dollars per share)	$ (6.22)
Outstanding, units (in shares)	2,504,340
Outstanding, weighted average grant-date fair value (in dollars per share)	$ 0.63

Note 11 - Significant Custome_3

Note 11 - Significant Customers / Concentration / Disaggregated Revenue (Details Textual) - Geographic Concentration Risk [Member] - Assets, Total [Member]	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
DENMARK
Concentration Risk, Percentage	62%	61%
UNITED STATES
Concentration Risk, Percentage	36%	26%
CHINA
Concentration Risk, Percentage	2%	13%

Note 11 - Significant Custome_4

Note 11 - Significant Customers / Concentration / Disaggregated Revenue - Concentration of Risk (Details) - Customer Concentration Risk [Member]	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenue Benchmark [Member] | Customer A [Member]
Concentration Risk, Percentage	14%	11%	17%	11%
Revenue Benchmark [Member] | Customer B [Member]
Concentration Risk, Percentage	12%
Revenue Benchmark [Member] | Customer C [Member]
Concentration Risk, Percentage	11%
Revenue Benchmark [Member] | Customer E [Member]
Concentration Risk, Percentage				21%
Revenue Benchmark [Member] | Customer D [Member]
Concentration Risk, Percentage			12%
Revenue Benchmark [Member] | Customer F [Member]
Concentration Risk, Percentage				10%
Accounts Receivable [Member] | Customer A [Member]
Concentration Risk, Percentage			14%
Accounts Receivable [Member] | Customer C [Member]
Concentration Risk, Percentage			11%
Accounts Receivable [Member] | Customer E [Member]
Concentration Risk, Percentage					16%
Accounts Receivable [Member] | Customer G [Member]
Concentration Risk, Percentage					11%

Note 12 - Segment Reporting - S

Note 12 - Segment Reporting - Summary of Segment Activity (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenue	$ 3,305,534			$ 4,142,954			$ 11,961,062	$ 12,157,394
Net Loss	(1,752,664)	$ (6,507,059)	$ (3,746,424)	(2,903,956)	$ (3,098,108)	$ (2,459,429)	(12,006,147)	(8,461,493)
Segment assets	40,651,333						40,651,333		$ 45,054,692
Corporate, Non-Segment [Member]
Revenue	0			90,452			50,253	295,350
Water Segment [Member]
Revenue	785,046			1,493,549			3,522,049	3,730,889
Net Loss	(107,681)			(531,868)			(864,378)	(2,112,430)
Segment assets	6,874,447						6,874,447		7,767,679
Water Segment [Member] | Operating Segments [Member]
Revenue	785,046			1,493,549			3,522,049	3,730,889
Ceramics Segment [Member]
Revenue	1,854,981			1,703,057			5,548,951	5,444,863
Net Loss	(772,862)			(798,615)			(3,519,182)	(2,681,013)
Segment assets	13,889,897						13,889,897		13,961,057
Ceramics Segment [Member] | Operating Segments [Member]
Revenue	1,854,981			1,703,057			5,548,951	5,444,863
Plastics Segment [Member]
Revenue	665,507			855,896			2,839,809	2,686,292
Plastics Segment [Member] | Operating Segments [Member]
Revenue	665,507			855,896			2,839,809	2,686,292
Plastic Products [Member]
Net Loss	(152,492)			(358,880)			(392,092)	(887,184)
Segment assets	1,207,357						1,207,357		1,645,879
Other Segments [Member]
Net Loss	(719,629)			$ (1,214,593)			(7,230,495)	$ (2,780,866)
Segment assets	$ 18,679,632						$ 18,679,632		$ 21,680,077