ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,601, issued on June 3, was assigned to EBARA JITSUGYO Co. LTD. (Tokyo).
"Apparatus and method for biological treatment of organic wastewater" was invented by Toshihiro Tanaka (Tokyo), Kiyomi Kabasawa (Tokyo) and Yasuharu Sato (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are an apparatus and a method for biological treatment of an organic wastewater where it is possible to efficiently remove organic matter under high load while reducing the amount of air used for aerobic biological treatment and substantially decreasing the amount of sludge generated. The apparatus is provided with: a first biological treatment tank which has a fixed...