Exhibit 23.1 Perma-Fix Environmental Services, Inc. Gainesville, Florida We hereby consent to the incorporation by reference in the Prospectus constituting a part of this Registration Statement of our report dated February 27, 2004, relating to the consolidated financial statements and schedule of Perma-Fix Environmental Services, Inc. and subsidiaries appearing in the Company's Annual Report on Form 10-K for the year ended December 31, 2003. We also consent to the reference to us under the caption "Experts" in the Prospectus. /S/ BDO SEIDMAN, LLP - --------------------------- BDO Seidman, LLP West Palm Beach, Florida April 30, 2004