A recycling system and construction method for surface water in a sponge city

Abstract

The invention mainly discloses a surface water recycling system for a sponge city. The surface water recycling system comprises a pure water storage system, a sewage treatment system and a water flow control system, wherein the pure water storage system comprises a first water well, a second water well and a circulation well which are connected with one another; the sewage treatment system comprises a first sewage treatment device located in the first water well and a second sewage treatment device located in the second water well. The surface water recycling system can realize effective percolation, treatment and collection of surface water, improves the water quality and facilitates surface water recycling. A construction method of the surface water recycling system comprises steps of ground treatment, foundation pit treatment, building of the water wells, installation of the sewage treatment system, building of the circulation well, laying of filtering plates, laying of internal pipes, laying of water guide pipes and ground surface treatment. The construction method is reasonable in design and adopts simple and reliable construction steps, the construction steps are joined and arranged properly, accumulated water can be guided effectively to infiltrate to underground, and the effect of sufficiently recovering rainwater and surface water is realized.

Description

technical field [0001] The invention relates to a recovery and utilization system of surface water in a sponge city and a construction method thereof. Background technique [0002] Sponge city is a new generation of urban stormwater management concept, which means that the city has good "elasticity" in adapting to environmental changes and responding to natural disasters caused by rainwater. It can also be called "water elastic city", an international general term Built for "Low Impact Development Stormwater Systems". Sponge city can absorb, store, infiltrate, and purify water when it rains, and "release" the stored water and use it when needed. Through source reduction, process control, system governance, etc., buildings and communities, roads and squares can be integrated. , parks, green spaces, and water systems have the functions of absorbing, storing, and slowing release of rainwater, effectively controlling rainwater runoff, no water accumulation in light rain, no wat...

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Problems solved by technology

In recent years, sunken green spaces, infiltration ponds, wet ponds, etc. have begun to attract attention and have been rapidly constructed. However, due to the relatively single filler, although the infiltration of surface rainwater has been accelerated to a certain extent, it is difficult to effectively store it, and the rainwater has not been purified. , the rainwater is directly discharged into the river without treatment, which has a certain pollution effect on the river, making the water quality of the river course black and smelly, destroying biodiversity, increasing the cost of urban maintenance, and not using the rainwater. The utilization efficiency is not high, resulting in waste of rainwater resources

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