Integrated nitrogen and phosphorus removal sewage treatment device

Abstract

The invention provides an integrated nitrogen and phosphorus removal sewage treatment device, which is mainly characterized in that an anaerobic reaction chamber is located at the front end of a hypoxia reaction chamber; a stirrer is arranged in the anaerobic reaction chamber; a water inlet pipe is arranged in the anaerobic reaction chamber and the hypoxia reaction chamber; the water inlet pipe is provided with a hypoxia reaction chamber valve and an anaerobic reaction chamber valve; the hypoxia reaction chamber valve is connected with the water inlet pipe of the hypoxia reaction chamber; the anaerobic reaction chamber valve is connected with the water inlet pipe of the anaerobic reaction chamber; a sludge return pipe of the anaerobic reaction chamber is located at the side faces of the lower parts of the hypoxia reaction chamber and the anaerobic reaction chamber; the sludge return pipe of the anaerobic reaction chamber is provided with a sludge return valve, and the sludge return valve is used for controlling sludge return flow rate. The integrated nitrogen and phosphorus removal sewage treatment device has the advantages that sludge returns to the anaerobic reaction chamber from the hypoxia reaction chamber, thus, an environment in favor of phosphorus-accumulating bacteria and anaerobic phosphorus release is created, and the biological selection of the phosphorus-accumulating bacteria is enhanced, therefore the high-efficiency phosphorus removal is realized; the integrated nitrogen and phosphorus removal sewage treatment device is low in operating cost, and can be widely applied to sewage treatment in medium-and small-sized cities and towns and countries, and highway service areas.

Description

technical field [0001] The invention relates to a nitrogen and phosphorus removal sewage treatment device and a nitrogen and phosphorus removal sewage treatment method. Background technique [0002] With the development of China's economy, the scope of environmental pollution continues to expand. A large number of small and medium-sized water pollution sources are difficult to integrate into the urban pipe network due to geographical location and other factors, and need to be treated on site. These small and medium water pollution sources include sewage treatment in small and medium-sized towns and rural areas, expressway service areas, tourist attractions, newly-built residential areas in urban-rural fringes, nursing homes, independent villa areas, airports, and military camps. Convenient sewage treatment technology device with high effluent quality. Nitrogen and phosphorus are important sources of nutrients for organisms. After the phosphorus-containing sewage discharged...

AI Technical Summary

Problems solved by technology

However, the phosphorus removal rate is low, about 30%. If the total phosphorus (TP) content in urban domestic sewage is 4~8mg / L, the effluent is higher than 1mg / L, which cannot meet China's national urban sewage treatment plant pollutant discharge standard ( GB18918-2002) level 1 A limit

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