US Patent Issued to BL TECHNOLOGIES on Nov. 3 for "Systems and methods for upgrading conventional activated sludge plants" (Canadian Inventor)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,780,703, issued on Nov. 3, was assigned to BL TECHNOLOGIES INC. (Minnetonka, Minn.).

"Systems and methods for upgrading conventional activated sludge plants" was invented by Pierre Lucien Cote (Dundas, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A conventional activated sludge wastewater treatment plant is upgraded by adding one or more of a membrane filtration unit, a membrane aerated biofilm reactor (MABR) unit, and a screen. The membrane filtration unit is added between a process tank and the secondary clarifier. The membrane filtration unit extracts treated effluent at a rate up to 25% of the influent flow rate. The plant is not converted i...