A method for controlling the flow of sewage in a drainage system into a sewage main pipe during rainfall

Abstract

The invention discloses a method for controlling sewage in rainwater pipes and sewage pipes of all areas in a drainage system to be gathered into a sewage main pipe on rainy days. According to the method, under the situation that existing resources are utilized to a great extent, through reasonable distribution, primary rainwater with poor water quality and high pollution degree in all the partition areas is distributed into the sewage main pipe through sewage interception pipes which are connected to the rainwater pipes, and sewage in sewage tubes which are connected with the sewage pipes isdischarged into the sewage main pipe and then enters a sewage treatment factory for treatment. By reasonably distributing the amount of sewage which is discharged from the sewage tubes connected withthe sewage pipes and the sewage interception pipes connected with the rainwater pipes and enters the regulation and storage facility, the pollution caused by the sewage to the partition areas can be reduced to the lowest degree as much as possible, and meanwhile, clean rainwater is not discharged into the sewage treatment factory, so that the load of the sewage treatment factory is reduced, and accordingly optimization distribution of the existing resources is achieved.

Description

technical field [0001] The invention belongs to the technical field of regulation and control of drainage systems, and in particular relates to a method for controlling the flow of sewage in sewage intercepting pipes in each area of ​​the drainage system into main sewage pipes during rainfall. Background technique [0002] In the current society, urbanization is developing more and more rapidly, the area of ​​the city is getting larger and larger, the structure of the urban drainage pipe network is becoming more and more complex, and the treatment pressure of the urban water treatment system is increasing. [0003] The traditional urban pipe network system uses a large rainwater treatment system to be responsible for a large catchment area. Because the catchment area is too large, the delay time of rainwater in the pipeline or surface runoff is not fully considered, resulting in initial rainwater Mixed with the later rainwater in large quantities. For example, a city has bu...

AI Technical Summary

Problems solved by technology

But for area M, a large amount of later clean rainwater in area M is also discharged into the urban sewage treatment plant during the time when the storage tank discharges the initial rainwater in area N. Such discharge will cause great damage to the urban sewage system dealing with stress

In addition, the pipe network in M ​​area and N area is generally connected during actual operation. Due to the difference in distance and the retention effect on the road, the initial rainwater in N area may seriously pollute the later clean rainwater in M ​​area, which will also lead to rainwater discharge. The irrationality of the situation

As for the domestic sewage that must be discharged to the sewage pipeline of the sewage treatment plant, the flow rate that can be discharged to the sewage treatment plant is bound to be limited. If waterlogging occurs, the pollution in the area will be greatly increased.

[0005] At present, a technical solution to the above-mentioned problems has been proposed in the prior art, that is, the urban pipe network system is re-divided according to the unit area by means of fragmentation processing, but the current pipe network system is usually suitable for sunny weather When the rain falls, due to the limited processing capacity of the sewage treatment plant in the pipe network, the maximum flow rate of the main sewage pipe is limited; when heavy rain and heavy rain occur, the water in each unit area (such as domestic sewage, initial Rainwater and mid-late rainwater) are discharged to the sewage treatment plant at the same time, resulting in different degrees of waterlogging disasters in each unit area