Initial rainwater and rain-sewage mixed overflow water storage pond facility with flood peak reduction function

Abstract

The invention discloses an initial rainwater and rain-sewage mixed overflow water storage pond facility with a flood peak reduction function. The initial rainwater and rain-sewage mixed overflow water storage pond facility comprises a storage pond, a retention pond, an outflow pond, a rainwater inlet pipeline and a rainwater outlet pipeline. A rainwater control gate and a flood peak overflow weir which are arranged on the lateral side of the retention pond are communicated with the storage pond respectively. A draining pump is arranged between the storage pond and the outflow pond. A water quality detector is arranged in the retention pond. When initial rainwater and rain-sewage mixed overflow water enter the retention pond and water body quality is poor, the rainwater control gate is opened to enable the initial rainwater and the rain-sewage mixed overflow water to enter the storage pond; water body with good quality directly flows out from the rainwater outlet pipeline; in case of storm flood, most of rainwater of flood peaks is discharged out of the retention pond from the rainwater outlet pipeline, and the rest automatically overflows into the storage pond through an elevation of the flood peak overflow weir, so that the flood peaks are branched and reduced, and flood peak reduction stress of main downstream rainwater pipe culverts and even watercourses is relieved.

Description

technical field [0001] The invention relates to the technical field of rainwater and sewage regulation and storage separation and urban waterlogging prevention and control, in particular to a facility for reducing flood peaks by utilizing initial rainwater and rainwater mixed water overflow storage tanks. Background technique [0002] In the rain-sewage diversion area, in the early stage of rainfall, road flour dust, mud, sand, oil, and even garbage quickly flow into the drainage pipes and culverts (canals) with the initial rainwater, and the concentration indicators of main pollutants such as BOD, COD, and SS even approach and reach the level of sewage treatment. Factory water standard. In addition, in the interception-type sewage interception area, the initial rainwater merges with the sewage to form rain-sewage mixed water. Due to the limitation of the interception multiple, the rain-sewage mixed water that exceeds the transfer capacity of the downstream transmission pip...

AI Technical Summary

Problems solved by technology

[0005] To sum up, storage tanks have great potential for reducing flood peaks and alleviating waterlogging in small urban watersheds. However, although the existing initial rainwater storage tanks have a large volume, they have strong c

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