Ecological filter groove construction method for cutting urban runoff pollution

Abstract

The invention relates to an ecological filter groove construction method for cutting urban runoff pollution. An ecological filter groove is constructed in an urban green belt, and a water distribution groove and an energy dissipation plate are connected to the front of the ecological filter groove; the ecological filter groove is sequentially divided into a gravel layer, a ceramsite layer, a zeolite layer, a quartz sand layer and a soil layer from bottom to top, and shrubs and herbs are planted in the soil layer. Compared with the prior art, the configuration method of soil, large-particle-size quartz sand, middle-particle-size zeolite, small-particle-size ceramsite and large-particle gravel is adopted, good growth of plants can be guaranteed, ground surface runoff pollutants can be effectively held back as well, meanwhile the shrubs and the herbs are planted in the ecological filter groove in a matched mode, the soil layer is covered by grass sod, the vegetation is developed in root system, has good absorption function to nitrogen and phosphorus, can beautify urban landscape, and can generate good landscape benefits. According to the ecological filter groove construction method, the urban runoff pollution is cut down by constructing the ecological filter groove, and the method has the advantages of being easy and convenient to operate, low in cost, easy to manage and the like.

Description

technical field [0001] The invention relates to an ecological filter ditch construction method for reducing urban runoff pollution, so as to realize the reduction of runoff flood peaks and the effective interception and removal of runoff pollutants. It belongs to the technical field of ecological engineering. Background technique [0002] The urbanization process continues to accelerate, the density of buildings increases and the proportion of hardened roads increases, which changes the law of runoff generation and collection under the original natural ecological environment conditions. At the same time, suspended solids (TSS), total nitrogen (TN), total phosphorus (TP), chemical oxygen demand (COD), microorganisms and heavy metals in the runoff enter the receiving water body through the urban stormwater drainage system, resulting in eutrophication of the water body. degradation, threatening the safety of the aquatic ecosystem. In my country's key watersheds such as Taihu ...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the problem of urban runoff pollution and provide a method for constructing an ecological filter ditch that reduces urban runoff pollution

Images