227 patents
Page 5 of 12
Utility
Addition of alkaline materials to biotrickling filter or bio-filter make-up water
23 Aug 22
A system for removing undesirable compounds from contaminated air includes a biofilter having an alkaline material introduction system and a fuzzy-logic based controller.
James Vaughan Harshman
Filed: 29 May 20
Utility
Methods and Systems for Treating Phosphogypsum-Containing Water
18 Aug 22
Methods for treating phosphogypsum-containing water are disclosed.
Hao Dang, Wenxin Du, George Y. Gu, Michael J. Shaw, Simon P. Dukes
Filed: 21 Aug 19
Utility
Cover for a Segmented Biogas Reservoir
18 Aug 22
The segmented cover is made of juxtaposed cover segments mounted over a wastewater reservoir.
Victor Cormier, Darin Evans
Filed: 12 Feb 21
Utility
Ozone Generation System
18 Aug 22
An ozone generation system which is adaptable for supplying ozone to different medium and small application processes.
Philip Tinsley Dempster
Filed: 9 Sep 21
Utility
Implementation of feedback control for improved electrochemical system design
16 Aug 22
A method of operating an electrochemical cell including introducing an aqueous solution into the electrochemical cell, applying a current across an anode and a cathode to produce a product, monitoring the voltage, dissolved hydrogen, or a condition of the aqueous solution, and reversing polarity of the anode and the cathode responsive to one of the measured parameters is disclosed.
Simon Paul Dukes, George Gu, Joshua Griffis, Michael Shaw
Filed: 6 Mar 18
Utility
Electrolyzer System Configurations for Enhancement of Ultraviolet Advanced Oxidation Processes
11 Aug 22
A wastewater treatment system comprises an actinic radiation reactor and a concentric tube electrode electrochemical cell in fluid communication between a source of electrolyte and the actinic radiation reactor.
JOSHUA GRIFFIS, SIMON P. DUKES, BENJAMIN SATTERFIELD
Filed: 13 Mar 20
Utility
Rotating spray device for water distribution on media bed of a biofilter
2 Aug 22
A biofilter irrigation system comprises a cylindrical vessel having a central axis, a media bed positioned within the vessel, a spray head system positioned above the media bed, the spray head system comprising a central hub positioned at the central axis of the vessel, at least one arm extending distally from the central hub toward a wall of the vessel and configured to rotate about the central axis, and a plurality of nozzles connected to the at least one arm.
Michael Sumner Murphy, James Paul Harshman, Eric Carl Hansen
Filed: 12 Feb 16
Utility
Electrochemical System with Concentration Recirculation In Cyclic Batch Mode
28 Jul 22
A method of operating an electrochemical device includes periodically discharging a volume of concentrate reject in a timed batch cycle and replacing the concentrate reject with feed water.
Li-Shiang Liang, Michael J. Shaw, Wenxin Du
Filed: 12 Apr 22
Utility
Manual filter press with displaceable follower stop
19 Jul 22
A filter press includes a plurality of filter plates, a hydraulic cylinder, a follower plate through which the hydraulic cylinder is configured to apply pressure to the plurality of filter plates, and a spacer rod configured to transfer force from the hydraulic cylinder to the follower plate.
Chad Massel, Jason Letherby
Filed: 19 Feb 18
Utility
Reduced volume electrochlorination cells and methods of manufacturing same
12 Jul 22
An electrochemical cell includes a housing having an inlet, an outlet, and a central axis and an anode-cathode pair disposed concentrically within the housing about the central axis and defining an active area between an anode and a cathode of the anode-cathode pair.
Paul Beddoes, Li-Shiang Liang, Andrew Green, Jacob Telepciak, Joshua W. Griffis, Simon P. Dukes
Filed: 23 Dec 19
Utility
Ozone generation system
5 Jul 22
An ozone generation system which is adaptable for supplying ozone to different medium and small application processes.
Philip Tinsley Dempster
Filed: 10 Dec 19
Utility
Removal of selenocyanate from refinery sour water stripper wastewater
21 Jun 22
Systems and methods for removing heavy metals such as selenium from wastewater with zero valent iron media.
Michael W. Wismer, Samuel A. Mason, Yongheng Huang
Filed: 22 Nov 19
Utility
High solids dissolved air flotation system and methods
7 Jun 22
A wastewater treatment system including an aeration unit, a contact tank, a dissolved air flotation unit, and a biological treatment unit is disclosed.
Argun Olcayto Erdogan, Michael L. Doyle
Filed: 13 Mar 19
Utility
VacFlush adaptor for submersible pumps
7 Jun 22
Wastewater treatment systems are disclosed.
Kenneth L. Norcross
Filed: 18 Jun 20
Utility
Method and system for controlling disinfection in recirculating water systems
7 Jun 22
The present invention relates to a method and system for controlling disinfection in recirculating water systems and a method for retrofitting a recirculation system.
Wolfgang Kleiber
Filed: 7 Aug 18
Utility
Treatment of high peroxide waste streams
17 May 22
A method of reducing a concentration of hydrogen peroxide from wastewater includes diluting the wastewater with water having a lower concentration of hydrogen peroxide than the wastewater to produce a diluted wastewater, contacting the diluted wastewater with a dissolved iron compound at an acidic pH to form a partially treated wastewater having a lower concentration of hydrogen peroxide than the diluted wastewater, and precipitating iron solids from the partially treated wastewater by raising a pH of the partially treated wastewater to form a neutralized partially treated wastewater.
Frank L. Sassaman, Jr., David L. Berger, Stanley R. Karrs
Filed: 25 May 17
Utility
Removing Heavy Metals in a Ballasted Process
5 May 22
A system for treating metal-contaminated wastewater includes a primary treatment sub-system, a secondary treatment sub-system, and a tertiary treatment sub-system.
Rohan Wikramanayake, Raymond G. Pepin, Thomas Miles
Filed: 13 Jan 22
Utility
Methods and Systems for Treating Phosphogypsum-Containing Water
10 Mar 22
Methods for processing pretreated phosphogypsum wastewater are disclosed.
Hao Dang, Wenxin Du, George Y. Gu, Michael J. Shaw
Filed: 21 Aug 19
Utility
Method for the Treatment of Wastewater
10 Mar 22
A system and method for backwashing a sand filter in a wastewater treatment system.
Gerard Willem Smiddy, Frank Leslie Smiddy
Filed: 17 Nov 21
Utility
Control System for Optimizing Mixing and Energy Usage for Mixing Systems
3 Mar 22
A method and system for treating wastewater is disclosed.
Christopher K. Waul, Argun Olcayto Erdogan
Filed: 19 Apr 21