Regulation, storage and purification system and method for controlling rainwater and sewage confluence overflow pollution

Abstract

The invention discloses a regulation, storage and purification system and method for controlling rainwater and sewage confluence overflow pollution. A water inlet gallery comprises a sewage pump station water inlet, a regulation and storage sedimentation tank water inlet, a water storage type ecological filter tank water inlet and an emergency overflow port which are sequentially increased in height, and the water inlet gallery also comprises a regulation and storage sedimentation tank clarification overflow port connected with the water storage type ecological filter tank, so that a gradientline for graded treatment according to rainfall is formed, wherein the gradient line comprises a rain-free or small-rainfall line comprising the water inlet gallery, a sewage pump station and a sewagetreatment plant, a medium rainfall line comprising the water inlet gallery, a regulation and storage sedimentation tank and a sewage treatment plant, a long-time continuous moderate rain line comprising the water inlet gallery, the regulation and storage sedimentation tank, the water storage type ecological filter tank and a natural water body, a heavy rainfall line comprising the water inlet gallery, the water storage type ecological filter and the natural water body, and a rainstorm line comprising the water inlet gallery and an emergency overflow port for overflowing water to the natural water body; a later line comprises all the lines. According to the system, the pollution load of discharged water is greatly reduced under the condition of limited regulation and storage volume, and the system is economical and efficient.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and specifically relates to a combined system overflow pollution control system, which strengthens the control of drainage pollution in rainy seasons through storage and purification measures, improves the environmental quality of surface water, and can be applied to black and odorous water treatment and sponge city construction. Background technique [0002] At present, most of the old urban areas in my country still adopt the combined drainage system of rain and sewage, and the combined drainage system will exist for a long time before the separate system transformation is completely realized in each area. When the rainstorm in the rainy season exceeds the design capacity of the combined pipeline, the excess rain-sewage mixed sewage overflows from the overflow facility or the drainage pumping station of the combined pipeline into the urban water body. These overflows are usually called ...

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Problems solved by technology

[0004] Aiming at the problems that the existing sink control measures are a single structure, occupying a large area, the water body is black and smelly, and the operating load of the sewage treatment plant is high, the present invention proposes a regulation, storage and purification system for controlling the combined rain and sewage overflow pollution. At different heights on the water inlet corridor, entrances connecting overflow, storage, purification and other treatment facilities are set up to deal with the confluence of rain and sewage under different weather conditions such as sunny days, light rainy days, moderate rainy days, heavy rainy days, and heavy rainy days. Sewage

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