Built-in biochemical-ecological system based on in-river rainwater runoff purification river bank

Abstract

The invention discloses a built-in biochemical-ecological system based on an in-river rainwater runoff purification river bank. The built-in biochemical-ecological system is formed by five parts of a rainwater desanding well, a rainwater runoff rubble filter dam, an anaerobic organism filter dam, a bidirectional flow wetland purification system and a rubble slope protection in-river water quality repairing system. The built-in biochemical-ecological system disclosed by the invention has the advantages of no energy consumption, ecologicalization, landscaping, and efficient rainwater runoff purification, can guarantee the in-river water quality, and is a necessary means for realizing long effectiveness of river governance; meanwhile, the built-in biochemical-ecological system has a function of repairing a water body, realize rainwater containment, and is an effective measure for building a sponge type city at present; the built-in biochemical-ecological system is positioned at the inner part and the upper part of the river bank, so that the land resource needs not to be additionally occupied, and flood discharging is not affected as the hydraulic radius of a river way is not reduced; meanwhile, a landscape effect of the river way can be increased, so that many purposes can be achieved at one stroke.

Description

technical field [0001] The invention relates to a biochemical, ecological control and restoration system for urban inland river pollution, in particular to a biochemical-ecological composite purification system for rainwater runoff entering inland rivers. Background technique [0002] In the initial stage of construction, each city has one or several urban rivers, whose main functions are flood discharge in rainy season and urban sewage discharge river. With the improvement of urbanization level, people have higher and higher requirements for environmental quality, and the water function of urban inland rivers has also changed from sewage discharge river to landscape, ecology and flood discharge river. However, due to the poor water quality of the first rain in the city, the rainwater after surface runoff is close to or exceeds the water pollution level of urban domestic sewage, and the average COD value is greater than 100mg / L, sometimes even as high as 300mg / L, especially ...

AI Technical Summary

Problems solved by technology

[0005] The present invention is aimed at the problems existing in the in-situ purification technology of polluted runoff rainwater in inland rivers, and the direct arrangement of traditional subsurface wetlands in the river will reduce the hydraulic radius of the river and affect flood discharge, while the floating island wetland does not have sufficient matrix layer to achieve the suspension state, and the purification effect Poor puzzle that provides a built-in biochemical-ecosystem based on inland river stormwater runoff purification embankment

Images