First rain collecting green land

Abstract

The invention discloses a first rain collecting green land. The first rain collecting green land comprises a green land which is lower than the urban ground, the lower part of the green land communicates with a rainwater permeation and regulation storage tank which communicates with a first rain intercepting well, and the first rain intercepting well respectively communicates with an urban rainwater pipe network and an urban sewage pipe network. According to the first rain collecting green land, early rainwater collected by the urban ground is collected through the green land, the collected rainwater can permeate into the underground through the rainwater permeation and regulation storage tank when the rainfall is small, and when the collected rainfall exceeds the infiltration capacity ofthe rainwater permeation and regulation storage tank, the rainwater flows into the first rain intercepting well and is distributed into the urban rainwater pipe network or the urban sewage pipe network to be treated with a matched urban water treatment system. The early rainwater with larger contamination can permeate into the underground and can be prevented from entering the urban water circulation system, the initial rainwater with large rainfall and smaller contamination can be distributed, and then urban virtuous hydrological circulation can be realized.

Description

technical field [0001] The invention belongs to the field of urban rainwater treatment engineering, and in particular relates to a green space for collecting primary rain. Background technique [0002] As the city transforms from extensional development to connotative development, the development of the city takes the banner of "green city" and carries out the intensive construction of "ecological city, sponge city, smart city, low-carbon city", green GDP production, "seeing High-quality urban life rich in regional culture, where you can see the mountains, see the water, and remember nostalgia. Building a sponge city with the functions of natural accumulation, natural infiltration and natural purification is an important part of the construction of ecological civilization, an important manifestation of the realization of urbanization and the coordinated development of environmental resources, and it is also a major task of my country's urban construction in the future. As t...

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Problems solved by technology

[0005] At the same time, studies in recent years have found that the initial rainwater in the city dissolves a large amount of polluting gases such as acid gases, vehicle exhaust, and factory exhaust gases in the air. A large amount of pollutants, the pollution level of rainwater in the early stage is relatively high, even exceeding the pollution level of ordinary urban sewage, and it is directly discharged into the river through the rainwater pipe, causing a certain degree of pollution to the water environment

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