Rural domestic sewage treatment system

Abstract

The invention relates to the technical field of water remediation, particularly a rural domestic sewage treatment system. The system comprises a grating well, a primary sedimentation tank, an anaerobic biofilter, a biological contact oxidation tank, a secondary sedimentation tank, an advanced treatment pond and a fermentation tank which are used for treating sewage in sequence, wherein sewage floating matters of which are filtered through the grating well is guided into the primary sedimentation tank through a lifting pump between the grating well and the primary sedimentation tank; the primary sedimentation tank, the anaerobic biofilter, the biological contact oxidation tank and the secondary sedimentation tank are sequentially connected through pipelines; and the biological contact oxidation tank guides sewage back to the anaerobic biofilter through a sewage backflow pump and a sewage backflow pipeline; sewage in the secondary sedimentation tank is guided into the advanced treatmentpond through a water outlet pump between the secondary sedimentation tank and the advanced treatment pond; a sludge pipeline and a sludge pump are arranged below the grating well, the primary sedimentation tank, the biological contact oxidation tank and the secondary sedimentation tank to guide sludge into the fermentation tank for stack retting fermentation. The system is good in sewage treatmenteffect, can realize unmanned management, and is suitable for rural sewage treatment in decentralized regions.

Description

technical field [0001] The invention relates to the technical field of water restoration, in particular to a rural domestic sewage treatment system. Background technique [0002] At present, the country pays more and more attention to the rural ecological environment, and has launched a series of rural sewage treatment actions. However, due to factors such as small water volume and large influence of time period in rural sewage, many sewage treatment equipment are idle, and the phenomenon of "sunshine" appears. Most rural areas generally have low income and high investment and operation cost of sewage treatment equipment, which makes the equipment unable to operate, resulting in waste of resources, and the disposal of a large amount of straw and other waste generated in the agricultural production process has become a problem. Therefore, it is difficult to design a rural life The sewage treatment system adapts measures to local conditions and uses local materials, so that se...

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Problems solved by technology

[0002] At present, the country pays more and more attention to the rural ecological environment, and has launched a series of rural sewage treatment actions. However, due to factors such as small water volume and large influence of time period in rural sewage, many sewage treatment equipment are idle, and the phenomenon of "sunshine" appears. Most rural areas generally have low income and high investment and operation cost of sewage treatment equipment, which makes the equipment unable to operate, resulting in waste of resources, and the disposal of a large amount of straw and other waste generated in the agricultural production process has become a problem. Therefore, it is difficult to design a rural life The sewage treatment system adapts measures to local conditions and uses local materials, so that sewage can be "taken from the people and used for the people" to realize the resource utilization of rural domestic sewage

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