Self-purification permeation-blocking system for sponge city

Abstract

The invention discloses a self-purification permeation-blocking system for a sponge city and belongs to the technical field of sponge cities. The permeation-blocking system comprises a main permeation-blocking system body and a self-purification system, a permeation mat formation is arranged in the main permeation-blocking system body, and the self-purification system comprises a self-purificationwell which is arranged nearby the main permeation-blocking system body; a back flushing porous pipe is laid on the lower layer of the permeation mat formation and connected to the self-purification well, a self-coupling device which is used for connecting a water outlet of a submersible pump with the back flushing porous pipe is arranged in the self-purification well, and a by-pass pipe which iscommunicated with the bottom of the main permeation-blocking system body is further arranged on the bottom of the self-purification well; during maintenance, the submersible pump is arranged in the self-purification well through the self-coupling device, and purified rainwater in the self-purification well is utilized for back flushing the permeation mat formation. The permeation-blocking system has the back flushing and self-purification functions, tedious maintenance work such as digging for soil replacement and filter material cleaning at regular time is not needed, and long-time stable running of the permeation-blocking system is guaranteed; the permeation-blocking system has the advantages that the system is simple in structure and convenient to implement and operate and saves the fund.

Description

technical field [0001] The invention relates to a drainage facility, more specifically, to a sponge city self-cleaning seepage system. Background technique [0002] Sponge city is a new generation of urban stormwater management concept, which means that cities have good "elasticity" in adapting to environmental changes and responding to natural disasters caused by rainwater, and can also be called "water elastic cities". The sponge city absorbs, stores, infiltrates, and purifies water when it rains, and "releases" the stored water and uses it when needed. [0003] 1. Water seepage in sponge cities [0004] Because the underlying surface of the city is too hard, the original natural ecological background and hydrological characteristics have been changed. Therefore, it is necessary to strengthen natural infiltration and give priority to infiltration. This can avoid surface runoff and reduce the loss from hardened roads and roofs to the pipe network; at the same time, it can...

AI Technical Summary

Problems solved by technology

[0017] The purpose of the present invention is to overcome the deficiencies that the seepage, stagnation, and drainage facilities of the sponge city need complex maintenance work to deal with the decline in water permeability after a period of operation, and provide a self-cleaning seepage and stagnation system for the sponge city. By adopting the technical solution of the present invention, The seepage system of the sponge city has the function of recoil and self-cleaning, and there is no need for tedious maintenance work such as regular excavation and replacement of soil, cleaning filter materials, etc. The submersible pump can also be used for other self-cleaning seepage systems, ensuring the long-term stable operation of the seepage system of the sponge city ; and the sponge city self-cleaning seepage system has the advantages of simple structure, convenient implementation, convenient operation, saving money, etc.

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