Tail-end purification device for overflow pollution of urban inundation drain outlet

Abstract

The invention discloses a tail end purification device for urban flooding sewage draining exit overflow pollution, a sewage draining exit is arranged on a river channel revetment retaining wall, and the purification device comprises an in-situ purification module which is arranged on the outlet side of the sewage draining exit in a semi-surrounding manner, is tightly connected with the river channel revetment retaining wall and is used for rapidly degrading soluble pollutants in sewage; the filtering and purifying module is arranged on the outer side of the in-situ purifying module in a semi-surrounding manner, is tightly connected with a river channel revetment retaining wall and is used for effectively adsorbing suspended pollutants in sewage; the ecological wetland module is arranged on the outer side of the filtering and purifying module in a semi-surrounding manner, is tightly connected with a river channel revetment retaining wall and is used for further purifying the sewage; the energy dissipation module is arranged on the outer side of the ecological wetland module in a semi-surrounding mode and tightly connected with the river channel revetment retaining wall, and the elevation of the energy dissipation module is higher than the normal water level. The purification device is efficient and convenient, combined sewage can be rapidly purified after being discharged from the water outlet, and the water quality safety of a receiving water body is guaranteed.

Description

technical field [0001] The invention relates to the technical field of terminal purification of overflow pollution from urban submerged sewage outlets, in particular to a device for terminal purification of overflow pollution from urban submerged sewage outlets. Background technique [0002] With the increase of black and odorous water treatment measures in my country, many urban water bodies have eliminated black and odorous water in sunny days, and overflow pollution in rainy days has gradually become the biggest difficulty in the treatment of black and odorous water bodies. At present, most of the old urban areas in my country still retain the combined drainage system. After the rainfall, when the pipeline flow exceeds the transportation capacity of the intercepting main pipe, the excess rain and sewage combined sewage overflows and discharges into the receiving water body, causing the water body to be black and smelly. According to the survey, the overflow discharge of C...

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Problems solved by technology

[0004] At present, the terminal control technology, including the installation of cyclone separators or fast filter tanks, mainly has the following problems: 1) The removal effect on dissolved pollution is limited; 2) The occupied area is large, the device is complicated, and the construction and operation and maintenance costs high

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