Effluent pretreatment system for rain and sewage mixed-flow type pump station

Abstract

The invention provides an effluent pretreatment system for a rain and sewage mixed-flow type pump station. The effluent pretreatment system comprises an aeration system and a biofilm formation system,wherein the biofilm formation system is arranged at the upper part of the aeration system; the aeration system comprises at least one aeration device; any one aeration device comprises a main pipe and two or more branch pipes; the branch pipes are perpendicular to the main pipe; any one main pipe is connected with an air blower; each main pipe and each branch pipe are respectively provided with two or more aeration holes; the separation distance of the aeration holes is 60 to 120 cm; main pipes and bank lines are arranged in parallel; the biofilm formation system is composed of two or more steel pipes; the bottom parts of the steel pipes are fixedly connected with river bottom; a steel wire rope is arranged between the steel pipes; steel wire ropes are perpendicular to the bank lines; a suspension film is arranged on each steel wire rope; the lower end of each suspension film is fixed through a gabion; and floating balls are arranged on suspension films. The effluent pretreatment system provided by the invention solves the technical problems of high pollution inlet load of a river and large lockage flow rate due to outfall of the rain and sewage mixed-flow type pump station.

Description

technical field [0001] The invention relates to water treatment technology, in particular to water ecological restoration technology, in particular to a rain-sewage mixed-flow pumping station outlet water pretreatment system. Background technique [0002] With the continuous advancement of water environment treatment, the point source pollution of rivers and lakes in Chinese cities has been effectively controlled, and the sewage treatment rate has been continuously improved. Then, some rivers are affected by the municipal, rainwater, and rainwater mixed-flow pumping stations along the line, and black and smelly phenomena occur from time to time. In the urban area, pre-evacuation in the form of pumping stations into the river, non-point source pollution in rainy days (initial rainwater, rain and sewage confluence, etc.) and peak flow overflow pollution in dry seasons are serious problems. [0003] According to the connection of the pumping station to the pipe network, the pu...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a rain-sewage mixed-flow pumping station water pretreatment system. The rain-sewage mixed-flow pumping station water pre-treatment system should solve the problem that the rain-sewage mixed-flow pumping station in the prior art cannot fundamentally Solve the pollution problem of sewage on the river during the process of releasing the river

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