An ecological restoration system for regenerated water of sewage treatment plants for ecological replenishment of rivers and lakes

Abstract

The invention discloses an ecological restoration system for reclaimed water of a sewage treatment plant used for ecological replenishment of rivers and lakes. The heights of the bottom of the first step, the bottom of the second step and the bottom of the third step decrease successively. On the bottom of the first stage, there is an enhanced interception and degradation zone for pollutants; on the bottom of the second stage, there is an ecological conservation area; on the bottom of the third stage, there is a three-dimensional ecological restoration area. The restoration area is filled with water bodies, and the enhanced pollutant retention and degradation area, the ecological conservation area and the three-dimensional ecological restoration area are successively connected by low overflow dams. The enhanced interception and degradation area of ​​pollutants is connected to the outfall of the sewage treatment plant, and the three-dimensional ecological restoration area is connected to rivers and lakes. The entire ecological restoration system carries out ecological maintenance in stages, and there are different solutions for different stages and different environmental characteristics.

Description

technical field [0001] The invention relates to the subject of sewage treatment and ecological engineering restoration, in particular to an ecological restoration system for reclaimed water of a sewage treatment plant used for ecological replenishment of rivers and lakes. Background technique [0002] The quality of reclaimed water is between sewage and tap water. It is non-drinking water that can be used within a certain range after urban sewage and waste water have been purified to meet national standards. It is called the second water source for cities. In the face of the basic national conditions of a large population and a shortage of water resources in our country, urban sewage recycling is one of the effective ways to improve the comprehensive utilization rate of water resources and reduce water pollution. Alleviating the contradiction of water shortage is an important measure to implement sustainable development. Moreover, compared with other water resource developm...

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Problems solved by technology

[0003] However, a large number of experimental studies have proved that the high concentration of carbon and nitrogen content in reclaimed water will lead to a significant increase in the diversity of bacterial communities at the water supply port. It will also have a great impact on the microbial community in the river or lake

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