An optimization system for sewage interception of interception drainage pumping station with porous permeable separation wall added

Abstract

The invention relates to a sewage-intercepting optimization system of an interception type water draining pump station additionally provided with a porous water-permeating partitioning wall. The sewage-intercepting optimization system comprises a water collecting pool with an opened top part, an upstream combined pipeline or a rainwater feeding pipe communicated with the water collecting pool, water feeding channels arranged in the water collecting pool in sequence along the water flowing direction, a water feeding grating, porous water-permeating partitioning wallsand a flow guiding wall,wherein the water feeding grating, the porous water-permeating partitioning wall and the flow guiding wall enclose into an embedded type sewage intercepting pool commonly, and the embedded type sewage intercepting pool is opened at the top part, is independent from the water collecting pool and partitions the water collecting pool into two independent branched water collecting pools which are internally and respectively provided with a rainwater pump and a water draining pipe network communicated with the rainwater pump; and the embedded type sewage intercepting pool is internally provided with a sewage intercepting pump and a sewage draining pipe network communicated with the sewage intercepting pump. Compared with the prior art, the sewage-intercepting optimization system is applicable to high-efficiency sewage-intercepting modification of built combined sewage treatment and drainage pump stations and rainwater pump stations mixed with separated sewage treatment and drainage systems.

Description

Technical field [0001] The invention belongs to the technical field of rain sewage treatment, and relates to an interception drainage pump station sewage optimization system with a porous permeable partition wall. Background technique [0002] The drainage pumping station is used for the discharge of rainwater and sewage collected in the water collection service area. It can be divided into a combined pumping station (serving a combined drainage system) and a rainwater pumping station (serving a split drainage system). In the combined drainage system, the flow of rainwater and sewage in the pipeline is small during sunny days, first rains and light rains. The designed dry-day sewage interception pumps can easily deposit pollutants in the drainage pipes and the drainage pumping basins due to the small flow. It can effectively intercept the sewage volume, but it is difficult to effectively intercept the corresponding pollutants or pollution loads; when the rain overflows or the rai...

AI Technical Summary

Problems solved by technology

In the combined drainage system, during sunny days, early rains and light rains, the flow of rainwater and sewage in the pipeline is small, and the designed sewage interception pump in dry weather is easy to deposit pollutants in the drainage pipeline and the sump of the drainage pumping station due to the small flow. It can effectively intercept the amount of sewage, but it is difficult to effectively intercept the corresponding pollutants or pollution loads; when the overflow in rainy days or the rainwater pump is released into the river, the sediment or pollution load accumulated in the previous period will be washed by the high-velocity rainwater and released into the river with the overflow. have a serious impact on the water quality of receiving water bodies

At the same time, due to various reasons, the rainwater pipe network of my country's separate drainage system has been mixed with different degrees of sewage, which has become a de facto combined pipe network. There is a rainy day overflow discharge river pollution similar to the confluence pumping station

[0003] The drainage system (interception drainage pumping station) where the sewage interception pump is installed or added is because the volume of the sump of the pump station is designed according to the maximum flow rate of the rainwater pump for 30 seconds, which is much larger than the area and volume of the sump basin required for the design flow rate of the sewage interception pump for 5 minutes. As a result, a certain proportion of pollutants in the rainwater are deposited in the pipeline and the sump in the form of sediments in dry weather or when the rainwater pump is not started in light rain; due to the limited suction capacity and range of the sewage interception pump, it is difficult to effectively transport this part of the rainwater. sewage pollution load

When the rainwater pump is turned on to release the river in rainy days, due to the suction of the rainwater pump, the flow field flow rate in the pipeline and the sump increases, and the accumulated pollution load in the early stage is violently pumped and released into the river with the rainwater, which intensifies the water pollution.

At the same time, since it is difficult to carry out large-scale engineering transformation in the drainage pumping station that has been completed and put into use (for example, the transformation period will affect the transportation of rainwater and sewage in the area, etc.), it is necessary to find a relatively simple and short construction period. method to improve the problem of pollutant deposition in the sump in dry weather and improve the effective interception performance of the interception pump

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