US 12,304,846 B2
Sewage treatment apparatus suitable for multi-household domestic sewage treatment
Wenyun Liao, Changsha (CN); Mingjie Jiang, Changsha (CN); Shuang Liu, Changsha (CN); Dong Zhou, Changsha (CN); and Guangming Chen, Changsha (CN)
Assigned to HUNAN WISDOM WATER ENVIRONMENTAL ENGINEERING CO., LTD., Changsha (CN)
Appl. No. 17/418,723
Filed by HUNAN WISDOM WATER ENVIRONMENTAL ENGINEERING CO., LTD., Changsha (CN)
PCT Filed Dec. 23, 2019, PCT No. PCT/CN2019/127393
§ 371(c)(1), (2) Date Jun. 25, 2021,
PCT Pub. No. WO2020/135323, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 201811594427.3 (CN), filed on Dec. 25, 2018.
Prior Publication US 2022/0055929 A1, Feb. 24, 2022
Int. Cl. C02F 3/30 (2023.01); B01D 53/04 (2006.01); C02F 1/28 (2023.01); C02F 1/68 (2023.01); C02F 3/00 (2023.01); C02F 9/00 (2023.01); C02F 11/00 (2006.01); C02F 1/00 (2023.01); C02F 101/10 (2006.01); C02F 101/30 (2006.01)
CPC C02F 3/30 (2013.01) [B01D 53/0438 (2013.01); C02F 1/28 (2013.01); C02F 1/68 (2013.01); C02F 3/006 (2013.01); C02F 9/00 (2013.01); C02F 11/00 (2013.01); C02F 2001/007 (2013.01); C02F 2101/105 (2013.01); C02F 2101/30 (2013.01); C02F 2203/006 (2013.01); C02F 2209/04 (2013.01); C02F 2209/08 (2013.01); C02F 2209/16 (2013.01); C02F 2209/18 (2013.01); C02F 2209/22 (2013.01); C02F 2303/02 (2013.01); C02F 2303/04 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A sewage treatment apparatus for domestic sewage treatment,
comprising an external box body, the external box body being internally provided with an anaerobic zone, an aerobic zone, a settling zone, a sludge reduction zone and an apparatus zone separated from each other and communicating with one another through a pipeline, wherein
the anaerobic zone, the aerobic zone, the settling zone and the sludge reduction zone communicate in sequence, the anaerobic zone communicates with a septic tank, the aerobic zone communicates with the anaerobic zone to reflux a part of mixed liquid to the anaerobic zone, the settling zone communicates with the anaerobic zone to reflux a part of active sludge to the anaerobic zone, and the sludge reduction zone communicates with the anaerobic zone or the septic tank; and
the apparatus zone is internally provided with a detection unit for detecting various parameters during a sewage treatment process and a controller for controlling working states of various sewage treatment devices of the sewage treatment apparatus according to a detection result of the detection unit, and the sewage treatment device comprises one or more of: a fan, a lifting pump, a chemical reagent adding device, a physical phosphorus removal device, a chemical phosphorus removal device, a mixed liquid reflux pump, a second electric control switch element and a carbon source supplementing device, wherein the physical phosphorus removal device includes a filler cavity for physically adsorbing phosphorus in the sewage and a first electric control switch element arranged at a water inlet of the filler cavity, wherein the first electric control switch element is connected with the controller, and the controller controls a sewage delivery amount of the first electric control switch element according to the detection result of the total phosphorus detector; and
the settling zone is provided with a water advanced treatment device comprising a box body, an upper portion of the box body being provided with a water inlet and a water outlet; and the box body is internally provided with a vertical flow settling assembly for vertically guiding fluid introduced from the water inlet and outputting the fluid in an ejecting manner by way of inclined wall deflection and an inclined tube settling assembly or a sloping plate settling assembly arranged in an output position of the vertical flow settling assembly and used for settling the fluid output by the vertical flow settling assembly in an inclined settling manner.