	US 11,702,354 B2
	Bacterium-alga coupled sewage treatment device based on energy recycling and use method thereof
Yong Jiang, Beijing (CN); Kuixiao Li, Beijing (CN); Wei Wang, Beijing (CN); Yu Bai, Beijing (CN); Jiawei Wang, Beijing (CN); Ye Li, Beijing (CN); Kerning Wang, Beijing (CN); and Lijun Zhao, Beijing (CN)
Assigned to BEIJING DRAINAGE GROUP CO., LTD, Beijing (CN)
Appl. No. 17/271,705
Filed by BEIJING DRAINAGE GROUP CO., LTD, Beijing (CN)
PCT Filed Mar. 31, 2020, PCT No. PCT/CN2020/082407 § 371(c)(1), (2) Date Feb. 26, 2021, PCT Pub. No. WO2021/077679, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 201911021616.6 (CN), filed on Oct. 25, 2019.
Prior Publication US 2021/0403356 A1, Dec. 30, 2021
Int. Cl. C02F 9/00 (2023.01); C02F 1/20 (2023.01); C02F 1/44 (2023.01); C02F 3/30 (2023.01); C02F 3/32 (2023.01); C02F 1/00 (2023.01); C02F 101/10 (2006.01); C02F 101/16 (2006.01)

CPC C02F 9/00 (2013.01) [C02F 1/20 (2013.01); C02F 1/444 (2013.01); C02F 3/308 (2013.01); C02F 3/322 (2013.01); C02F 1/004 (2013.01); C02F 2001/007 (2013.01); C02F 2101/105 (2013.01); C02F 2101/163 (2013.01); C02F 2209/14 (2013.01); C02F 2209/15 (2013.01); C02F 2209/16 (2013.01); C02F 2209/22 (2013.01); C02F 2301/10 (2013.01); C02F 2303/10 (2013.01)]

7 Claims

1. A bacterium-alga coupled sewage treatment device comprising: a pretreatment device, a photobioreactor, an alga separation apparatus, a continuous flow bioreactor and a secondary sedimentation tank which are sequentially connected in order; the pretreatment device being connected to a municipal sewage inlet pipe; the photobioreactor being connected to a carbon dioxide gas charging device through a gas filling pipeline; one part of a sludge thickening tank being connected to the secondary sedimentation tank, the other part of the sludge thickening tank being connected to the pretreatment device; and the alga separation apparatus being further connected to a filter press.