Separate system controlling sewage and initial rainwater pollution

Abstract

The invention relates to a separate system controlling sewage and initial rainwater pollution. The separate system controlling sewage and initial rainwater pollution comprises a rainwater pipeline, asewage pipeline and separating control units. The rainwater pipeline and the sewage pipeline are parallel. The rainwater pipeline is provided with a plurality of separating control units. Each separating control unit is connected with the sewage pipeline through a separating pipeline. Each separating control unit comprises a separating well, wherein one side of the separating well is provided witha first inlet, the other side of the separating well is provided with a first outlet corresponding to the first inlet, the first inlet and the first outlet are connected with rainwater pipeline sections on the two sides of the separating well correspondingly, and the side, close to the sewage pipeline, of the separating well is provided with a second outlet. Each separating control unit is provided with a passage control unit which is used for controlling the opening degree of the second outlet. The separate system controlling sewage and initial rainwater pollution creatively adopts a rainwater pipeline separating manner and avoids the situation that initial rainwater of rainfall, ground cleaning sewage and mixed discharge of sewage and rainwater pollute natural water.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a diversion system for controlling sewage and initial rainwater pollution. Background technique [0002] Urban municipal drainage systems are mainly divided into combined drainage systems and divergent drainage systems. The earliest combined drainage system is to mix sewage, industrial wastewater and rainwater in the same pipe, and directly discharge it into the nearby water body without any treatment, which seriously pollutes the receiving water body. Many old cities at home and abroad are almost Take this approach. The interception combined drainage system is often used now. [0003] The structure of the intercepting combined drainage system is basically the same as that of the traditional combined drainage system. The difference is that the intercepting combined drainage system has an intercepting well between the municipal combined main pipe and...

AI Technical Summary

Problems solved by technology

[0004] For this combined drainage system, the main problems are: ① When it rains, non-point source pollution will be generated on residential areas and municipal roads. Although the existing combined drainage system has an interception well at the end for interception, the designed interception The multiple is not enough, so that the interception well fails to intercept the non-point source pollutants, and the non-point source pollutants directly enter the natural water body, causing pollution to the natural water body

② To control non-point source pollution, it is necessary to increase the size of the interception well, increase the size of the interception main pipe, and increase the capacity of the sewage plant

③ The interception of the interception well is controlled extensively, and the initial rainwater cannot be accurately intercepted

There are many problems in this split drainage system: ① Some sewage in the residential area enters the rainwater pipe by mistake, for example, the sewage discharged from the washing machine on the balcony will be directly discharged into the natural water body

The main problems of this drainage system are: ①The entire system cannot effectively intercept non-point source pollutants, and the interception efficiency is low

② Unable to control the sewage entering the rainwater pipe

④ Extensive control of interception wells. On the one hand, it may not be possible to send more initial rainwater to the sewage plant for treatment, causing non-point source pollutants to be discharged into natural water bodies. On the other hand, it may send a large amount of late rainwater to the sewage plant, increasing the sewage The load of the plant reduces the treatment efficiency of the sewage plant

[0005] Generally speaking, the current drainage system has the following problems: first, the non-point source pollution cannot be controlled; second, the control is extensive, and the sewage and initial rainwater cannot be precisely controlled; third, the pipelines are mixed, and the sewage is directly discharged to the Natural water bodies; Fourth, for areas with tight land use, terminal treatment cannot be effectively implemented

However, after a large number of experiments, the inventors found that, although this terminal treatment idea has improved the rainwater treatment efficiency and degree in the corresponding area to a certain extent, and controlled the non-point source pollution in the area; but there is still surface runoff It is difficult to control the collection accurately. Moreover, there is a time difference between the collection of initial rain at the farthest end and the nearest end of the online rainwater treatment facility. The collection of initial rain and non-point source pollution cannot be accurately controlled, so that precise governance cannot be achieved.

In addition, due to the problem of urban planning, there is a lot of interference in dividing the urban pipe network into grid-like areas, which is very difficult to realize and will cause great troubles to this model of urban pipe network layout.

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