Non-point source pollution control rainwater well

Abstract

The invention discloses a non-point source pollution control rainwater well. The rainwater well includes a shell, a coarse filter strainer, a basket, a medium filter material. The top of the shell isprovided with an inlet for rainwater flowing in, and the bottom of the shell is provided with a discharge hole communicated with a rainwater pipe. The coarse filter strainer covers the inlet, the basket is arranged in the shell and can be taken out from the inlet, at least parts of regions of the basket are provided with coarse filter meshes, and the diameter of filter holes of the coarse filter meshes is smaller than that of the filter holes of the coarse filter strainer. The medium filter material is arranged in the shell and under the basket, the diameter of filter holes of the medium filter material is smaller than that of the filter holes of the coarse filter meshes, and rainwater flowing in from the inlet passes through the coarse filter strainer, the coarse filter meshes and the medium filter material. By the method, rainwater can be treated by multi-stage filtration, pollutants of different diameters are intercepted at different locations, batch filtration is achieved, the ability of intercepting the pollutants is significantly improved, and the risk of large-particle pollutants entering the rainwater pipe network is greatly reduced.

Description

technical field [0001] The invention relates to the field of municipal drainage, in particular to a non-point source sewage control rainwater well. Background technique [0002] The rainwater well has holes on the side connected to the drainage pipes, and a seepage pipe extending downwards at the bottom, which can replenish rainwater to the ground and drain the excess rainwater through the drainage pipes, slow down land subsidence and prevent the road from being flooded during heavy rain. [0003] Concrete, cast iron, composite and other materials are used at the wellhead of traditional rainwater wells. The aperture is too large and the sewage interception capacity is insufficient, causing large particles of pollutants to enter the rainwater well and rainwater pipes, accumulating sediment for a long time and reducing the drainage capacity of rainwater pipes; if not cleaned in time Excavation will easily cause the area to not be drained in time, resulting in waterlogging, and...

AI Technical Summary

Problems solved by technology

[0003] Concrete, cast iron, composite and other materials are used at the wellhead of traditional rainwater wells. The aperture is too large and the sewage interception capacity is insufficient, causing large particles of pollutants to enter the rainwater well and rainwater pipes, accumulating sediment for a long time and reducing the drainage capacity of rainwater pipes; if not cleaned in time Digging, it is easy to cause the area to not be drained in time, resulting in waterlogging, and it is more difficult to clean

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