A bioretention tank system for treating initial rainwater

Abstract

The invention discloses a biological detention pond system for treating initial rainwater. The system comprises a water inlet pipe, a water filter tank and an adjustment and storage tank, wherein the adjustment and storage tank comprises an adjustment zone and a water storage zone; the initial rainwater collected by the water inlet pipe is filtered by the water filter tank and then enter a drain pipe, rainwater in the drain pipe enters the adjustment zone, rainwater in the adjustment zone enters the water storage zone via a water inlet, a first overflow pipeline is mounted in the adjustment zone, the water storage zone comprises a water storage tank, a floating board is hinged in the water storage tank, a buoy is mounted at one end of the floating board, a first sealing board is mounted on the floating board, a floating stop block is mounted on the water storage tank, a submersible pump is mounted at the bottom of the water storage tank and connected with a biological detention pond through a pressure water inlet pipe, and an overflow return pipe is arranged on the biological detection pond and connected with the water storage tank. The biological detention pond system can pre-treat, quantitatively collect and deeply treat the initial rainwater, the runoff pollution problem caused by initial rainfall to a city can be solved, and meanwhile, the dilution effect of later rainwater on the initial rainwater can be prevented.

Description

technical field [0001] The invention relates to a biological retention tank system for treating initial rainwater, 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 setting up initial rainwater disposal devices in the rainwater pipe network, and there are few studies on the separate collection and treatment of initial rainwater. Relevant patents are often sloppy in the collection of initial rainwater, just using a simple overflow collection device, without considering the dilution and scouring effect of later rainwater on the initial rainwater, the so-called "initial rainwater" collected is directly collected without treatment. Discharge into the municipal sewage pipe network, which directly leads to the real high-pollution rainwater being discharged into natural water bodies without being collected and treated, resulting in the destruction of the surface water environ...

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 bioretention tank system for treating initial rainwater, which has a reasonable structure, can collect and pretreat initial rainwater, and solve the problem of runoff pollution caused by initial rainfall to cities At the same time, it can prevent the dilution effect of the later rainwater on the initial rainwater. At the same time, the initial rainwater can be collected separately and used in conjunction with the bioretention tank, so that the highly polluted initial rainwater can be treated intensively. It has the characteristics of environmental friendliness and is suitable for the sponge city. Extensive use in construction

Images