System and method for ecological pollution control treatment of urban runoff rainwater resources

Abstract

The invention relates to a system and a method for ecological pollution control treatment of urban runoff rainwater resources. The system comprises a permeable pavement facility, a water filtering well and a bioretention facility which are sequentially connected in series, wherein the water filtering well comprises an outer well and an inner well sleeved with the outer well, and a water inlet pipeof the outer well is communicated with a water collecting pipe arranged in the permeable pavement facility; the inner well is filled with water filtering filler on the water permeable plate and is provided with an inner well drainage pipe; according to the bioretention facility, a water storage layer, a fiber blanket, a filler layer, a separation layer and a gravel layer are sequentially arrangedin a bioretention pond from top to bottom, and the fiber blanket contains plant seeds or plants grow on the fiber blanket; a water inlet pipe of the bioretention pond is communicated with an inner well drainage pipe of the water filtering well, and a perforated water collecting pipe and a drainage pipe which are communicated are arranged in the gravel layer. The system and the method have great reduction effects on runoff volume and flood peak flow of urban runoff rainwater, can effectively reduce and control the total amount and concentration of pollutants in rainwater resources, and are simple to operate and low in operation and maintenance cost, and the filler is easy to replace and regenerate.

Description

technical field [0001] The invention belongs to the technical field of hydrology and water resources, and in particular relates to a system and method for ecological pollution control and treatment of urban runoff rainwater resources. Background technique [0002] With the continuous improvement of my country's urban construction and industrialization, the contradiction between industrial water and urban domestic water is also increasing. In order to solve the increasingly serious problem of urban water demand, people gradually turn their attention to rainwater resources. Rainwater is an important part of the natural water cycle, and it is also the main water source for water storage and water conservancy such as rivers, lakes, reservoirs and streams. Many urban and rural water and groundwater mainly depend on the supply of rainwater. The traditional way of urban rainwater management is to lay gray infrastructure such as drainage pipes, and discharge them into rivers, lakes,...

AI Technical Summary

Problems solved by technology

These pollutants enter the receiving water body with the rainwater runoff, and accumulate for a long time, which will not only cause the water quality of the receiving water body to decline, eutrophication and even odor, but also enter the underground runoff and infiltrate into the groundwater layer to pollute the groundwater, resulting in the deterioration of the groundwater quality and causing drinking water risk

Images