US Patent Issued to HUNAN WISDOM WATER ENVIRONMENTAL ENGINEERING on May 20 for "Sewage treatment apparatus suitable for multi-household domestic sewage treatment" (Chinese Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,846, issued on May 20, was assigned to HUNAN WISDOM WATER ENVIRONMENTAL ENGINEERING Co. LTD. (Changsha, China).

"Sewage treatment apparatus suitable for multi-household domestic sewage treatment" was invented by Wenyun Liao (Changsha, China), Mingjie Jiang (Changsha, China), Shuang Liu (Changsha, China), Dong Zhou (Changsha, China) and Guangming Chen (Changsha, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sewage treatment apparatus comprises an external box body internally being provided with an anaerobic zone, an aerobic zone, a settling zone, a sludge reduction zone and an apparatus zone separated from each other, wherein the anaerobic z...