Surface runoff initial rainwater control structure

Abstract

The invention discloses a surface runoff initial rainwater control structure which can be used for collecting initial rainwater and includes an initial rainwater collecting trough and an automatic water blocking device. The initial rainwater collecting trough comprises a water inlet and a permeable paving structure. The rainwater enters the initial rainwater collecting trough through the water inlet and can be infiltrated underground through the permeable paving structure. The water inlet of the initial rainwater collecting trough is provided with the automatic water blocking device capable ofbeing automatically closed when the initial rainwater collecting trough is full of the rainwater. The automatic water blocking device is provided with a continuous small flow water supply channel, and the water supply flow of the water supply channel and the infiltration water volume of the initial rainwater collecting trough can maintain dynamic balance. The control structure has the function ofpreprocessing pollutants like suspended solids contained in rainwater runoff, especially the comprehensive function of permeable paving and movable floating boards, and is free of mechanical device,chemical agent, energy consumption and secondary pollution, small in occupied area and convenient and quick to clean later. The control structure has the advantages of low transformation investment and low operating cost.

Description

technical field [0001] The invention belongs to the technical field of rainwater surface runoff control, in particular to a novel surface runoff initial rain control structure. Background technique [0002] At present, most of the ways to regulate and store the initial rainwater on the surface are open cement sedimentation tanks or landscape "rainwater gardens". There is a lot of suspended matter in the water body, and the water stored in the device can only be released slowly through evaporation, which is difficult to cope with the frequent rainstorms in summer in my country. The "rain garden" type initial rainwater storage tank has an obvious function of regulating the surface runoff, but the later stage is blocked by sediment Post-cleaning is very laborious, time-consuming and expensive, and it is impossible to achieve both drainage and sand settling in heavy rainstorms. Contents of the invention [0003] The purpose of the present invention is to: aim at the problems ex...

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Problems solved by technology

[0002] At present, most of the ways to regulate and store the initial rainwater on the surface are open cement sedimentation tanks or landscape "rainwater gardens". There is a lot of suspended matter in the water body, and the water stored in the device can only be slowly released through evaporation, which is difficult to cope with the frequent rainstorms in summer in my country. The "rain garden" type initial rainwater storage tank has an obvious function of regulating surface runoff, but the later stage is blocked by sediment Post-cleaning is very laborious, time-consuming and expensive, and it is impossible to achieve both drainage and sand settling in heavy rainstorms

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