A control device for interception and diversion of overflow rainwater in combined pipe network

Abstract

The invention discloses an overflow rainwater interception and division control device provided with a combined pipe network. The overflow rainwater interception and division control device comprises the combined pipe network and a grit chamber, wherein a jump flow well and a division well are further arranged between the combined pipe network and the grit chamber; bottom surfaces of the combined pipe network, the jump flow well, the division well and the grit chamber are arranged from high to low according to the terrain; an output port of the combined pipe network is connected with an input port of the jump flow well, rainwater output ports of the flow jump well and the division well are connected with rainwater input ports of the division well and the grit chamber respectively; and a sewage output port of the jump flow well is connected with a municipal sewage pipeline. The device can divide domestic sewage and runoff in a rainy day, can divide medium-term runoff and later-period runoff in the rainy day, can more effectively treat sewage and runoff in the rainy day, has a small influence on the environment, combines terrain and topography, is simple in process and low in building and maintaining cost and can be widely applied to the non-point source pollution control field.

Description

Technical field [0001] The invention relates to a non-point source pollution treatment technology, in particular to a combined pipe network overflow rainwater interception and diversion control device. Background technique [0002] Due to the complexity of the urban drainage pipe network, it is difficult to completely separate the existing rainwater pipe network and sewage pipe network. Therefore, there are a large number of combined pipe networks that mix rainwater and domestic sewage in my country, which causes difficulties in diversion and treatment. . This kind of pipe network mainly discharges dry sewage on sunny days, and the flow is small, but the pollutant concentration is high. When it rains, rainwater washes the ground to form surface runoff with a high concentration of pollutants. The runoff flows into the combined pipe network through the surface gutter. The initial surface runoff and domestic sewage are mixed, which disturbs the sediment brought by the sewage on sunn...

AI Technical Summary

Problems solved by technology

[0004] There are deficiencies in the above treatment methods. Collecting rainwater and sewage into the sewage treatment plant requires high processing capacity of the sewage treatment plant, and the cost of building and operating the sewage treatment plant is high.

Instead of being directly discharged into the river, it will have a greater impact on the replenishment of the river water body, reducing the river's role in regulating the ecological environment and the use value of the river

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