Method for controlling sewage in all districted sewage interception pipes in drainage system to flow into detention and retention facility in rainy days

Abstract

The invention discloses a method for controlling sewage in all districted sewage interception pipes in a drainage system to flow into a detention and retention facility in rainy days. According to themethod, on the condition that an existing resource is utilized to the greatest extent, through reasonable allocation, first rain which is poor in water quality and seriously polluted in all districted areas is drained to the detention and retention facility through the sewage interception pipes, and then enters a sewage treatment plant to be treated. In this way, the degree of the pollution of the sewage to the districted areas can be lowered as much as possible; meanwhile, clean rainwater is not drained into the sewage treatment plant either, the load of the sewage treatment plant is reduced, and thus optimization allocation of the existing resource is achieved. Aiming at the situation that sewage and rainwater which are in different districted areas in the system and flow into the detention and retention facility at the same time are different in pollution degrees, reasonable distribution is conducted according to the amount and the time of the first rain in all the districted areas, the water body from areas with different pollution degrees is quickly and effectively drained and treated with pertinence, and thus the purpose that the water body is reasonably drained 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 ​​a drainage system into regulation and storage facilities 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,...

AI Technical Summary

Problems solved by technology

However, such a pipe network system is usually suitable for sunny days. When rain falls, due to the limited processing capacity of the sewage treatment plant in the pipe network, the maximum flow rate of the sewage interception box culvert is limited; The water bodies in each unit area are discharged to the sewage treatment plant at the same time, resulting in different degrees of waterlogging disasters in each unit area