Ecological purification system for decentralized domestic sewage of villages and towns in mountain areas

Abstract

The invention discloses an ecological purification system for decentralized domestic sewage of villages and towns in mountain areas, which consists of a natural convergence and channel sedimentation basin subsystem, a fall-off oxygenaeration subsystem, a flood and sewage dividing subsystem, an enhanced medium treatment subsystem and a ditch vegetation interception subsystem, wherein in the natural convergence and channel sedimentation basin subsystem, natural runoff channels are taken as a convergence system, and sedimentation basins are built at equal intervals to intercept sediment; the fall-off oxygenaeration subsystem is constructed through natural head drop of mountain creeks according to terrains, the head drop is 5m and ditches above the fall-off oxygenaeration subsystem are smooth; the sewage is filtered and divided by the flood and sewage dividing subsystem; flood and sediment enter the enhanced medium treatment subsystem and a strong adsorption clay material and a sand filler are taken as main media in the enhanced medium treatment subsystem; and the sewage treated by the enhanced medium treatment subsystem enters the ditch vegetation interception subsystem, and is treated and discharged. The ecological purification system is simple and reasonable in structure and low in operating cost and has great promotion and application value in the field of purification of the domestic sewage of the villages and towns in the mountain areas.

Description

technical field [0001] The invention relates to a domestic sewage purification technology system, belongs to the field of environmental engineering and environmental science, and is used for the treatment and purification of scattered domestic sewage in villages and towns in mountainous areas. Background technique [0002] With the continuous development of society and economy, the problem of water pollution is becoming more and more serious, and sewage treatment has become a key issue that human beings urgently need to solve. According to surveys, the economic loss caused by water pollution in China accounts for about 1.46% to 2.84% of GDP, and the consequences caused by eutrophication of water bodies are particularly serious. In recent years, although the state and local governments have invested huge sums of money every year, for example, the investment plan for environmental improvement including water pollution control during the "Tenth Five-Year Plan" period is 700 bil...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an ecological purification system for scattered domestic sewage in mountainous villages and towns in view of the shortcomings of the existing urban domestic sewage treatment technology, which are expensive in construction cost and high in operating cost. Domestic sewage: simple structure, high treatment efficiency, low construction and operation costs, etc., can provide technical support for the treatment and purification of scattered domestic sewage in mountainous and rural areas

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