Cold area rural township domestic sewage treatment method

Abstract

The invention discloses a cold area rural township domestic sewage treatment method to improve the cold area effluent water quality in winter and solve the substandard effluent water problem. According to the method, a core structure includes a preposed biochemical pool and a bio-contact oxidation pond. The preposed biochemical pool serves as an anaerobic pool in high temperature seasons, and serves as an aerobic pool in low temperature seasons. The effluent water enters the bio-contact oxidation pond to undergo deep biotreatment and is then discharged. The method gives sufficient consideration to the characteristics of abundant rural land resources, lack of capital and technologies, and the like, has the advantages of simple process, low construction cost and convenient maintenance and management, can save the operation cost, and can ensure up-to-standard effluent water in low temperature seasons, thus being suitable for popularization and application in rural townships in northern cold regions.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a treatment method suitable for rural and township domestic sewage in cold regions. Background technique [0002] The rural areas of our country produce a large amount of domestic sewage every year, but due to the scattered living conditions and the constraints of the economic and technological level, most rural areas do not have a complete sewage treatment system, and the sewage is directly discharged to the nearest water body, which has a negative impact on the surrounding environment and water environments such as rivers, lakes, and reservoirs. cause serious pollution. my country's "Eleventh Five-Year Plan" put forward the major historical task of building a new socialist countryside, and strengthening the treatment of rural domestic sewage is an important part of the construction of new countryside, and it is also an urgent problem that needs to be solved to improve the living...

AI Technical Summary

Problems solved by technology

The disadvantage is that the oxidation pond covers a large area, and it takes more than 30 days to treat the sewage. It is greatly affected by the climate. In winter, the pond water freezes, the microbial activity is poor, the effluent water quality is not easy to meet the standard, and the pond water is dirty and smelly, which affects the landscape environment.

[0006] Constructed wetland technology has a significant effect on the removal of nitrogen, phosphorus and suspended solids, but the treatment load is low, the area is too large when the water volume is large, and it is easily affected by the climate. It is difficult for the effluent to meet the standard when it freezes in winter. There are some problems in using it alone in places with a large amount of sewage

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