Beijing Drainage Group Co., Ltd

Beijing Drainage Technology Co., Ltd

Xiaoyu Han

Shujun Zhang

Jing Chang Huang

Yong Jiang

Jianming Huang

Jiawei Wang

Xiaocong Wang

Jiatong Jiao

Gangxin Chen

Dan Zhao

The present invention belongs to the technical field of sewage denitrification. Disclosed are a sewage treatment system and method of continuous flow step-feed short-cut denitrification-anaerobic ammonia oxidation coupled with denitrification. The system comprises a primary sedimentation tank, a bioreactor and a secondary sedimentation tank, which are connected in sequence, wherein the bioreactor comprises a pre-starvation zone, a first hypoxic zone, a first aerobic zone, a second hypoxic zone and a second aerobic zone; an agitator is arranged in each of the pre-starvation zone, the first hypoxic zone and the second hypoxic zone; an aeration device is arranged in both the first aerobic zone and the second aerobic zone; a polyurethane sponge filler is arranged in both the first hypoxic zone and the second hypoxic zone; and a nitrification liquid reflux pump is arranged between the first aerobic zone and the pre-starvation zone. By rationally utilizing a carbon source of raw sewage, the present invention develops a sewage denitrification system and a process control method which have the advantages of an efficient denitrification effect, a simple procedure flow, being convenient in terms of operation and maintenance, and being automated and intelligent.

Sewage treatment system and method of continuous flow step-feed short-cut denitrification-anaerobic ammonia oxidation coupled with denitrification

Provided are an anaerobic ammoxidation synergistic nitrogen removal process device of municipal sewage main and side streams and an application method thereof, comprising a municipal sewage raw water tank (), a biological reaction pool (), a secondary sedimentation pool (), a sludge digestion solution raw water tank () and a sludge digestion solution AOB strengthening pool (); wherein, the municipal sewage raw water tank () is connected with a water inlet valve () of the biological reaction pool () through a water inlet pump () of the biological reaction pool (); the biological reaction pool () is connected with the secondary sedimentation pool () through a secondary sedimentation pool connection pipe (); the sludge digestion solution raw water tank () is connected with a water outlet valve () of the sludge digestion solution raw water tank () through a water inlet pump () of the sludge digestion solution raw water tank (); the sludge digestion solution AOB strengthening pool () is connected with an anaerobic ammoxidation region compartment of the biological reaction pool through a sludge-water mixture reflux pipe () and a sludge-water mixture reflux pump (). It has the advantages of reasonability in structure design, convenience in operation, low running and maintenance cost, relatively low energy consumption, no need of an additional carbon source and the like, it can realize that short distance nitrification of municipal sewage is more stable, and it is high in low-temperature, water quantity and water quality shock resistance and can further increase volumetric load at the same time.

Anaerobic ammoxidation synergistic nitrogen removal process device of municipal sewage main and side streams and application method thereof

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Beijing, China

Xiaoyu Han