Sponge type rainwater collection system for preventing and treating initial rainwater pollution

By designing a sponge-type rainwater collection device and using technical means such as filter units and permeable layers, the problems of initial rainwater pollution and rainwater seepage are solved, and the effect of effectively reducing pollution and increasing rainwater utilization is achieved.

CN119686431APending Publication Date: 2025-03-25SHANGHAI INVESTIGATION DESIGN & RES INST CO LTD
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Patent Information

Application Number
CN202411576147.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-06
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

Urban river surface source pollution is mainly generated through initial rainwater runoff, resulting in pipeline siltation and water environment pollution. The existing technology is difficult to effectively reduce early rainwater pollution and increase rainwater seepage.

Method used

A sponge-type rainwater collection device is designed, including a wellbore, a permeable layer, a filter unit and an overflow unit. The debris is cut off through the water inlet grate and a sewage interceptor hanging basket, and the filter unit filters particulate pollutants, and the permeable layer and permeable drainage pipe to achieve rainwater infiltration.

Benefits of technology

Effectively reduce early rainwater pollution, reduce runoff into rivers, reduce water environment pollution, and at the same time achieve runoff-free infiltration of early rainwater and improve rainwater utilization efficiency.

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Abstract

The invention provides a sponge type rainwater collecting device for preventing and treating initial rainwater pollution, which comprises a shaft, a connecting pipe communicated with the bottom of the shaft, a permeable layer arranged at the bottom of the shaft, and a filter unit and an overflow unit which are sequentially arranged on the permeable layer from bottom to top, a drainage channel is further arranged among the inner wall of the shaft, the filtering unit and the overflow unit, and the drainage channel is communicated with the connecting pipe; a water inlet grate is arranged at the top of the shaft; a sewage intercepting hanging basket is arranged below the water inlet grate, the sewage intercepting hanging basket comprises four side surfaces, and one side surface is a waterproof surface; the drainage channel is located under the waterproof face. And the permeable layer is communicated with the underground through a plurality of permeable drainage pipes. The rainwater intercepting device has the advantages that large sundries such as fallen leaves and chippings in initial rainwater can be intercepted through the water inlet grate and the sewage intercepting hanging basket, particulate pollutants in the initial rainwater can be filtered through the filtering unit, the total amount of pollutants in the rainwater is reduced, and pollution to the water environment is relieved.
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