US 12,454,477 B2
Method and system for enhanced culture of aerobic granular sludge
Shujun Zhang, Beijing (CN); Yongqing Gao, Beijing (CN); Lixin Sun, Beijing (CN); Yong Jiang, Beijing (CN); Yu Bai, Beijing (CN); Fangbo Bao, Beijing (CN); Xueying Su, Beijing (CN); Yao Liu, Beijing (CN); Wei Fu, Beijing (CN); and Tong Li, Beijing (CN)
Assigned to BEIJING DRAINAGE GROUP CO., LTD, Beijing (CN)
Appl. No. 18/005,884
Filed by BEIJING DRAINAGE GROUP CO., LTD, Beijing (CN)
PCT Filed Nov. 25, 2021, PCT No. PCT/CN2021/133135
§ 371(c)(1), (2) Date Jan. 18, 2023,
PCT Pub. No. WO2022/213619, PCT Pub. Date Oct. 13, 2022.
Claims priority of application No. 202110379514.2 (CN), filed on Apr. 8, 2021.
Prior Publication US 2023/0271863 A1, Aug. 31, 2023
Int. Cl. C02F 3/12 (2023.01); C02F 3/00 (2023.01)
CPC C02F 3/1236 (2013.01) [C02F 2003/001 (2013.01); C02F 2203/006 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A system for enhanced culture of aerobic granular sludge, comprising a reaction tank, a water inlet and outlet unit, an aeration unit, and a sludge discharge unit, wherein
the water inlet and outlet unit comprises a water inlet pump, a water inlet electric valve, a liquid flowmeter, a sewage uniform distribution treatment device, a plurality of buffers, a water drainage pipe, and a water drainage electric valve; the water inlet pump, the water inlet electric valve, the liquid flowmeter, and the sewage uniform distribution treatment device are connected in sequence; the sewage uniform distribution treatment device is arranged in the reaction tank, and the sewage uniform distribution treatment device is configured for water intake and water drainage of the system; the plurality of buffers are arranged at the bottom of the reaction tank, and the plurality of buffers are configured to buffer the water intake of the sewage uniform distribution treatment device;
the aeration unit comprises a blower, a plurality of microporous aerators, and a gas flowmeter; the plurality of microporous aerators are arranged at the bottom of the reaction tank, the blower is connected to the plurality of microporous aerators through a pipeline, and the gas flowmeter is installed on the pipeline; and
the sludge discharge unit comprises a plurality of sludge discharge pumps, a sludge discharge pipe, a sludge discharge electric valve, and a sludge concentration meter; the plurality of sludge discharge pumps are arranged in the reaction tank, and connected to the sludge discharge pipe; and the sludge discharge electric valve and the sludge concentration meter are arranged on the sludge discharge pipe.