Small-town rural sewage processing technology

Abstract

The invention discloses a small-town rural sewage processing technology. The technology is characterized by comprising a mechanical grill, an eddy flow sand basin, an aeration equalizing tank, a composite A/O technology, MBR, a secondary sedimentation tank, disinfection and reuse. A septic tank effluent passes through the mechanical grill, the eddy flow sand basin, and the aeration equalizing tank, then is introduced into a composite A/O reaction tank and a MBR reaction tank, anacerobe is used for degrading a complex organic matter in sewage, the sewage biodegradability is improved, the effect of a biomembrane for converting the organic pollutants to ammonia nitrogen, through the aerobic nitrification and anoxic denitrification processes, the ammonia nitrogen can be removed, phosphorus-accumulating bacteria is used for absorbing phosphor in the sewage at an aerobic phase for removing phosphate; the processed sewage is absorbed into the secondary sedimentation tank for solid-liquid separating, the effluent is disinfected and reused, a part of sludge is introduced into the ABR reaction tank for phosphate removing, and the residual sludge is concentrated. The technology has the characteristics of high biological nitrogen and phosphorus removal efficiency, low investment operation cost, stable and reliable operation, strong resistance to impact load, and simple operation management.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a small town rural sewage treatment process. Background technique [0002] In recent years, as the country has gradually solved the problem of sewage treatment in large and medium-sized cities and some counties, the importance of domestic sewage treatment in small towns and rural areas in my country has begun to attract widespread attention. Whether rural domestic sewage can be treated well, and whether new technologies for high-efficiency and low-input village and town sewage treatment can be found will be directly related to the improvement of the living standards of the vast number of rural people in our country, and also related to our country's environmental conditions, especially in my country's rural sewage treatment. unprecedented heights. [0003] As we all know, although my country's economy has developed rapidly since the reform and opening up, the...

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Problems solved by technology

At the same time, the above methods all have problems of conflicting investment, operating costs and local economic strength to varying degrees, especially with the

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