Country distributed domestic sewage treating system and method

Abstract

The invention discloses a country distributed domestic sewage treating system and method. The system comprises a sewage collection tank (2), an anaerobic filter tank (1), ecological floating islands (11) and a constructed wetland (12), wherein the sewage collection tank (2) is connected with the anaerobic filter tank (1) through a water feeding pipe (3); the anaerobic filter tank (1) is connected with the constructed wetland (12) through a middle water discharging pipe (10); the ecological floating islands (11) float on the water surface of the constructed wetland (12); the constructed wetland (12) is connected with a water discharging pipe (18); the anaerobic filter tank (1) comprises parts of a sewage outlet (5), a sludge settling zone (6), a water distributing hole plate (4), a sludge suspension zone (7), elastic packing (8), the middle water discharging pipe (10) and an exhaust pipe (9) from bottom to top in sequence. The system and the method have the characteristics that the mixed liquor concentration is improved, the waterpower degree is high, blockage and power consumption are avoided, the operation management is simple and convenient, and the greening effect and the ecological effect are good; the country distributed domestic sewage treating system and method are suitable for popularization and application are facilitated.

Description

Technical field [0001] The invention belongs to the technical field of water environment pollution and treatment, and relates to a rural decentralized domestic sewage treatment device and method. Background technique [0002] With the rapid development of towns and villages and the rapid improvement of the living standards of the majority of rural people and the obvious improvement of living conditions, the discharge of rural domestic sewage has continued to increase. Due to the lack of long-term environmental planning in rural areas, rural drainage projects have been neglected. The domestic sewage treatment facilities in most rural areas are still incomplete, resulting in the unresolved problems of most rural domestic sewage pollution. The Ministry of Construction's "Village Human Settlement Status and Problems" survey report shows that 96% of the villages do not have drainage channels and sewage treatment systems, and the production and domestic sewage are discharged at will. A...

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Problems solved by technology

In addition, the rural population in my country is relatively scattered, and the existing sewage treatment scale is small, which makes the construction and operation costs of the project relatively high. The sewage treatment facilities are also easily affected by the local natural environment, which makes the selection of rural sewage treatment technology and the design of process parameters in my country It is different from urban domestic sewage treatment, and has a larger dimension

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