Treatment device and treatment method suitable for rural sewage treatment

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a treatment device and a treatment method suitable for rural sewage treatment, and the treatment device comprises an inclined plate oil separation sedimentation tank, a biochemical reaction tank, a secondary mud-water separation mechanism and a clean water tank which are sequentially arranged along the water flow direction. The inclined plate oil separation sedimentation tank completes oil removal and primary sedimentation of sewage, the biochemical reaction tank can control the rotating speed of the spherical microorganism attachment assembly so as to control the thickness of a biological membrane, and meanwhile, a guide rail fixed on the tank wall of the biochemical reaction tank can be adjusted to adjust the submerging depth; appropriate anaerobic, anoxic and aerobic conditions are created according to the requirements of treated water quality so as to adapt to the change of the water quality of sewage. And the biochemical reaction tank can change serial and parallel operation modes as required, so that the operation is more flexible. The device is relatively simple in structure, convenient to operate and small in occupied area, and has good adaptability to fluctuation of water quality and water quantity; the spherical microbial attachment assembly is light and corrosion-resistant, and the mass transfer effect is deepened by the internal elliptical filler.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a treatment device and a treatment method suitable for rural sewage treatment. Background technique [0002] At present, with the rapid development of the rural economy, the living standards of rural residents have improved significantly, and the total water consumption and sewage production of rural households have also increased year by year. However, the matching pollution control facilities in rural areas are not yet in place. The problem of water pollution has gradually attracted people's attention. [0003] Rural sewage has the characteristics of wide distribution, imperfect pipe network collection system, lack of treatment facilities, and large fluctuations in water quality and quantity. The concentration of total nitrogen, ammonia nitrogen, phosphorus, organic matter and other pollutants in sewage varies greatly, and rural sewage lacks a complete coll...

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Problems solved by technology

But at the same time, it has the disadvantages of low sludge removal rate and lack of special sludge discharge facilities. The integrated contact oxidation bed process conditions are single, and it is difficult to efficiently remove refractory oils and other organic components in water, and N, P, and Problems such as high CODCr content

[0005] In view of the problems of low water treatment efficiency, low degree of automation, and low sludge discharge efficiency in rural water pollution treatment equipment in the past

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