ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,176, issued on Sept. 29, was assigned to BEIJING DRAINAGE GROUP Co. LTD (Beijing).

"Electrochemical nitrogen and phosphorus removal device and method" was invented by Yongsheng Bai (Beijing), Jiang Chang (Beijing), Bojun Su (Beijing), Luyuan Shi (Beijing), Jun Han (Beijing), Yao Liu (Beijing), Lixin Yu (Beijing) and Huanhuan Wang (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrochemical nitrogen and phosphorus removal device includes a three-dimensional electro-catalytic oxidation unit reactor, a three-dimensional electro-biological coupling unit reactor, a light filter material filter unit reactor and a three-dimensional electro-f...