A collection and pretreatment system for initial rainwater of urban surface runoff

Abstract

The invention discloses an urban initial surface runoff rainwater collection pretreatment system which comprises a water inlet pipe and a water filtering tank, wherein the water filtering tank is connected with the water inlet pipe. Initial rainwater collected by the water inlet pipe is filtered by the water filtering tank and enters a discharging pipe, rainwater in the discharging pipe enters a transition area, rainwater in the transition area enters a water storage area, the water storage area comprises a water storage tank, a floating plate is hinged on the water storage tank, a buoy is mounted at the end of the floating plate, and a first overflowing pipeline is mounted on water storage tank. When the floating plate is horizontal, rainwater in the water storage tank is discharged into municipal sewage pipeline through the first overflowing pipeline, and a discharging port is formed in the bottom of the water storage tank. The urban initial surface runoff rainwater collection pretreatment system is reasonable in structure, can collect and pretreat initial rainwater, solves the problem of urban runoff pollution caused by the initial rainwater and prevents later rainwater from diluting the initial rainwater.

Description

technical field [0001] The invention relates to a collection and pretreatment system for initial rainwater of urban surface runoff, and belongs to the field of rainwater treatment. Background technique [0002] At this stage, the disposal of urban runoff rainwater is still at the stage of installing initial rainwater disposal devices in the rainwater pipe network, and there are very few related studies on the separate collection and treatment of initial rainwater. Related patents are often very sloppy in collecting initial rainwater, using simple overflow collection devices, without taking into account the dilution and scouring effect of later rainwater on initial rainwater, so the so-called "initial rainwater" collected is directly collected without treatment. Discharged into municipal rainwater, sewage pipe network or into low-impact development technology facilities such as bioretention tanks for advanced treatment. Because the impurity with large or small particle size ...

AI Technical Summary

Problems solved by technology

[0007] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a collection and pretreatment system for urban surface runoff initial rainwater, which has a reasonable structure, can collect and pretreat initial rainwater, and solve the runoff caused by initial rainfall to the city pollution problem, and at the same time prevent the dilution effect of the later rainwater on the initial rainwater, and then collect and store the initial rainwater separately for the subsequent water treatment device to carry out advanced treatment on it

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