Denitrification nitrogen and phosphorus removal sewage treatment system and treatment method

Abstract

The invention discloses a denitrification nitrogen and phosphorus removal sewage treatment system and method, and the system comprises an MABR device, an air compressor, a water inlet barrel, a circulating pump with a circulating regulating valve. An MABR reactor based on coupling denitrification nitrogen and phosphorus removal continuously supplies air is to microorganisms growing on the surface of the membrane through the hollow fiber membrane by virtue of an air compressor, and aerobic, anoxic and anaerobic microenvironments are formed, so that phosphorus-accumulating bacteria, denitrifying phosphorus-removing bacteria, denitrifying bacteria and the like can synergistically remove nitrogen and phosphorus, and a sewage treatment system for denitrifying nitrogen and phosphorus removal is simple to operate, low in sludge yield high in sewage treatment efficiency. and small in occupied area, nitrogen and phosphorus removal microorganisms are coupled in the MABR single-stage reactor by establishing a unique biological membrane growth environment, and a traditional biological nitrogen and phosphorus removal process is simplified.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system and treatment method for denitrification, denitrification and phosphorus removal. Background technique [0002] At present, industrial and agricultural wastewater and municipal wastewater contain a large amount of nitrogen, phosphorus, organic matter, etc., the treatment cost is high, and the quality of the effluent is unstable. Discharging into lakes and rivers not only easily breeds pathogenic microorganisms, but also leads to eutrophication of the water body and affects the ecological balance of the water. , a serious threat to human health and development. [0003] Traditional sewage treatment mostly adopts the A2 / O process, but the process consumes a lot of energy and has the following disadvantages: my country's urban sewage has obvious low C / N characteristics. In the case of insufficient carbon sources, the denitrification effect is easil...

AI Technical Summary

Problems solved by technology

[0002] At present, industrial and agricultural wastewater and municipal wastewater contain a large amount of nitrogen, phosphorus, organic matter, etc., the treatment cost is high, and the quality of the effluent is unstable. Discharging into lakes and rivers not only easily breeds pathogenic microorganisms, but also leads to eutrophication of the water body and affects the ecological balance of the water. , a serious threat to human health and development

[0003] Traditional sewage treatment mostly adopts the A2/O process, but the process consumes a lot of energy and has the following disadvantages: my country's urban sewage has obvious low C/N characteristics. In the case of insufficient carbon sources, the denitrification effect is easily affected, which leads to effluent The total nitrogen does not meet the standard, and the nitrate that has not been denitrified returns...

Images