quality-based partitioned CSO regulation, storage and purification system and rainwater purification method

Abstract

The invention discloses a quality-based partitioned CSO regulation, storage and purification system and a rainwater purification method. The system is divided into an upper layer and a lower layer, wherein the lower layer comprises an energy dissipation water distribution area, an enhanced precipitation area, a fiber filler efficient filtering area, a baffling purification area and an overflow area; wherein the upper layer comprises an energy dissipation water distribution area, a water storage area and an overflow area, the upper layer and the lower layer share the energy dissipation water distribution area and the overflow area, and an overflow wall and a submersible sewage pump are arranged between the energy dissipation water distribution area and the overflow area; an energy dissipation water distribution area in the lower layer is connected with an enhanced precipitation area, the enhanced precipitation area is connected with a fiber filler efficient filtering area through an overflow pipe, and the fiber filler efficient filtering area is connected with a baffling purification area through a sewage pump; the upper-layer middle water storage area is connected with the energy dissipation water distribution area through a drainage ditch. According to the invention, sewage purification in the storage pond can be realized, subsequent newly-built enhanced treatment facilities are not needed, sewage can be further stored according to different qualities and regions, grading treatment of sewage with different pollutant concentrations is realized, and quality improvement and efficiency improvement of the CSO storage pond are realized.

Description

technical field [0001] The invention relates to the technical field of rainwater treatment equipment, in particular to a CSO regulation and storage purification system and a rainwater purification method. Background technique [0002] Most cities and towns in my country adopt combined drainage systems. When it rains, combined drainage systems will carry a large amount of surface pollutants and urban sewage overflow to rivers, lakes and other water bodies, resulting in combined drainage system overflow (CSO) pollution. The overflow storage tank of the combined drainage system is a combined sewage collection facility that covers a large area and can generally be built under the urban public area. Its main function is to temporarily store the peak flow of the combined sewage until the maximum flow drops. Slowly drain rainwater from the storage tank. It can not only avoid the flood peak of rainwater, prevent urban waterlogging, realize the recycling of rainwater, but also avoid...

AI Technical Summary

Problems solved by technology

Therefore, when building a CSO storage tank, it is often necessary to build related water treatment facilities, which increases the project cost. On the other hand, there is a large amount of space inside the CSO storage tank, which is only used to store rainwater and cannot effectively use the space, resulting in The function of the CSO storage tank is single, and the economic benefit is not high

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