Road-dependent rainwater purification and storage ecological utilization system in northern cities

Abstract

The invention relates to the technical field of urban construction, in particular to a road-dependent rainwater purification and storage ecological utilization system in northern cities, comprising aroad central drainage green plant unit, a roadside drainage unit, a roadside surface green plant purification unit, an underground seepage storage unit and rainwater wetland gardens, wherein due to the road central drainage green plant unit, the surface water permeable area of the pavement is increased; the drainage ditch can effectively reduce the garbage blocking the pavement drainage outlet, accelerate the drainage velocity, and prevent the snow water containing snow melting agent from flowing into the green belt in winter; due to the sidewalk drain ditch, excessive rainwater on the pavement is introduced into the roadside surface green plant purification unit to increase the infiltration area and time of the rainwater; the underground seepage storage unit is set up to store rainwater for later use; due to the rainwater wetland gardens, the rainwater infiltration area and rainwater retention time can be enlarged in rainy season; and the rainwater wetland gardens and the roadside surface green plant purification unit are connected in ditches, thus greatly reducing the amount and area of road water.

Description

technical field [0001] The invention relates to the technical field of urban construction, in particular to an ecological utilization system for rainwater purification, regulation and storage in northern cities attached to roads. Background technique [0002] Sponge city is a brand-new urban construction concept proposed by the country to solve problems such as urban waterlogging, non-point source pollution, and serious damage to the urban water circulation system. Sponge city requires the city to have the functions of infiltration, stagnation, storage, purification, utilization and drainage of rainwater . [0003] Rainfall is a very important link in the natural water cycle system, and it is a natural source of supply for rivers, lakes, ponds, artificial landscape water extraction, etc. It has obvious randomness, seasonality and unevenness, especially in northern cities. Spring and autumn are dry, and summer is rainy. During the rainy period, the city is prone to waterlogg...

AI Technical Summary

Problems solved by technology

However, the use of deicing agents can cause great damage to road surfaces, and improper use can easily damage urban green belts. At the same time, it is extremely difficult to reuse the melted snow water after sprinkling deicing agents; how to effectively treat and utilize snow accumulation is also a sponge city construction that needs to be considered The problem

[0005] At present, there are green belts on both sides of urban roads, and even the center of some roads is set with green belts as dividing lines; the residential areas built along the roads are also equipped with landscaping and greening and corresponding water body landscaping; however, various greening functions Single, did not realize the full use of the functions of urban greening, such as retention and purification, and each landscaping greening is separated and not connected to each other; at the same time, daily maintenance often requires additional supplementary treated tap water, which greatly increases urban management. operation and maintenance cost

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