US Patent Issued to HaskoningDHV Nederland on March 31 for "Aerobic biological wastewater treatment in a continuous flow reactor" (Dutch Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,020, issued on March 31, was assigned to HaskoningDHV Nederland B.V. (Amserfoort, Netherlands).

"Aerobic biological wastewater treatment in a continuous flow reactor" was invented by Edward John Henrik Van Dijk (Amersfoort, Netherlands), Mario Pronk (Delft, Netherlands) and Viktor Albert Haaksman (Leiden, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided herein is a method for the purification of substrate-containing wastewater in a continuous flow-through aerobic biologically activated sludge reactor B, in which at least part of biological sludge 6 is conditioned in a selector under anaerobic or anoxic conditions with at least pa...