A biological and ecological composite treatment device for rural sewage treatment

Abstract

The invention discloses a bio-ecological composite treatment device for rural sewage treatment, which comprises an anaerobic enhanced pretreatment pool, an aeration pool and an ecological pond separated from each other and connected in sequence. The anaerobic enhanced pretreatment pool includes three interconnected The pretreatment tank is connected with the aeration tank; the aeration tank is equipped with a combined packing, the three-way diversion pipe runs through to the bottom of the combined packing and is arranged opposite to the blast aerator, and the aeration tank is connected to the ecological pond; the ecological pond includes Two interconnected sub-ponds in series, each sub-pond includes a shallow wet area and a deep-water wet area, the deep-water wet area of ​​the upstream sub-pond is equipped with a floating bed inclined plate sedimentation combination device, and the deep-water wet area of ​​the terminal sub-pond is equipped with aquatic plants and fish; A sludge return pump device is installed in the ecological pond, and trees with dense crowns are planted on the surrounding banks. The invention optimizes the traditional process, prolongs the residence time of sewage, and improves the mixing degree of sewage and activated sludge; it has the characteristics of low cost, low operating cost, high efficiency and easy popularization.

Description

technical field [0001] The invention relates to a biological ecological treatment system capable of biochemically treating sewage in the field of environmental protection engineering, in particular to a biological ecological composite treatment device for treating rural sewage (including domestic sewage and aquaculture wastewater, etc.). Background technique [0002] With the continuous development of my country's economy and society and the improvement of people's living standards, rural sewage treatment is becoming more and more urgent and has become a national demand. The Circular on Printing and Distributing the "Key Points of National Natural Ecology and Rural Environmental Protection Work in 2013" (Huanban [2013] No. 5) clearly requires that we speed up the resolution of outstanding environmental problems in rural areas, expand the scope of contiguous improvement of the rural environment, and implement them in all provinces (autonomous regions and municipalities) ) com...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the common problems of current rural sewage treatment projects, such as unstable treatment effect, easy clogging, difficulty in meeting discharge standards, and high cost, and provide a sewage treatment system with simple structure, convenient construction, low maintenance costs and operation management costs, and high treatment efficiency. The bio-ecological composite treatment device for the treatment of rural sewage (including domestic sewage and aquaculture wastewater, etc.)

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