ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,625, issued on July 21, was assigned to Nexom (Winnipeg, Canada).
"Simultaneous nitritation and denitritation system" was invented by Tanner Devlin (Winnipeg, Canada), Merle Kroeker (Winnipeg, Canada) and Martin Hildebrand (Winnipeg, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "The reduction of only the soluble fraction of organic matter prior to SND systems enhances nitrification rates while still providing residual particulate and colloidal organic matter to sustain denitrification in SND systems. Surprisingly, by increasing the amount of soluble organic matter reduced by conversion to biomass or microbial product and decreasing the amoun...