Overflow rain sewage assembly type in-situ ecological treatment system

Abstract

The invention relates to an overflow rain sewage assembly type in-situ ecological treatment system. The structure of the system is characterized in that a concrete box-type folded plate foundation isarranged at the bottom of a treated lake or riverway, an HDPE impermeable film, a water distribution pipeline, a graded broken stone layer, a gabion cage biological filler layer and artificial waterweeds are sequentially and fully laid on the concrete box-type folded plate foundation, and the depth of the concrete box-type folded plate foundation is equal to the thickness of the graded broken stone layer; an ecological filter dam maintenance structure is hoisted around the upper part of the concrete box-type folded plate foundation; and a water inlet pipe, a water outlet pipe and an overflow pipe are arranged in the intercepting well, horizontal grids are arranged in the intercepting well at equal height, and the overflow pipe is connected to a water distribution pipeline in the concrete box-type folded plate foundation through a flow guide channel. Sewage is led to the lowest point of the ecological treatment system to flow upwards, no obvious odor or black water transverse flow phenomenon exists, the landscape effect is good, a biological filter and underwater forest treatment system is constructed, the impact load resistance is high, the treatment effect is good, assembly construction can be achieved, and the good popularization effect on overflow mixed rain sewage treatment is achieved.

Description

technical field [0001] The invention is designed in the field of sewage treatment, especially the treatment of combined overflow rainwater and sewage, point source black and odorous water bodies, etc., and is specifically an assembled in-situ ecological treatment system for overflow rainwater and sewage. Background technique [0002] At present, most cities in my country still adopt the intercepting combined drainage system. During heavy rain, the overflow rainwater contains sewage pollutants in the dry season, surface runoff scour particles and rotten sediment in the pipeline. The environment, aquatic organisms and human health cause serious harm and threaten human health. Therefore, effective control of overflow rainwater pollution has very important practical significance for restoring the multiple functions of water bodies. [0003] However, there is no mature technology and equipment for the treatment of overflow rainwater and sewage. Chinese patent (201711445564.6) pr...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of water quality pollution caused by mixed flow of rain and sewage and point source black and odorous water in the prior art, and to provide an assembled in-situ ecological treatment system for overflow rain and sewage. The bit ecological treatment system can basically be prefabricated in advance, assembled construction, and the sewage outlet can be hidden, has no obvious odor, occupies a small area, and can be set in a certain shape according to the local landscape requirements

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