Design method of sewage collection system in rural area

Abstract

The invention relates to a design method of a sewage collection system in a rural area. The method comprises the following steps: S1, a sewage quota and a pipe section service number of a collection system to be designed are acquired; S2, the average sewage amount is calculated, and the designed sewage amount is determined according to the average sewage amount; S3, reference design speeds and reference design flows of different pipes and different pipe diameters under the conditions of the maximum pipe design fullness and the minimum pipe design gradient are determined; S4, a design flow comparison table is determined based on the reference design flow, wherein the design flow comparison table determines pipe and pipe diameter schemes in different flow ranges; and S5, the designed sewage quantity is compared in the step S2 with the designed flow comparison table, and determining the pipes and pipe diameters required by the collection system. Compared with the prior art, an effective method is provided for the design of the rural sewage collection system, the design and calculation process of the rural sewage collection system can be simplified, and construction and promotion of the rural sewage collection system are facilitated.

Description

technical field [0001] The invention relates to a design method of a sewage collection system, in particular to a design method of a sewage collection system in rural areas. Background technique [0002] In the past few decades, rural areas have stepped into the process of modernization to varying degrees, and indoor drainage facilities have been gradually improved; at the same time, with the enhancement of farmers' environmental awareness and emphasis on environmental protection measures, it is necessary to adopt a unified sewage collection and treatment system to prevent sewage Random discharge will affect hygiene and environment. [0003] At present, most rural areas in my country have not built systematic drainage pipes, and sewage is directly discharged through roads or ditches; some rural areas with drainage pipes mostly adopt the combined rain and sewage system. Confluence of rainwater and sewage means that rainwater pipes undertake the work of sewage transportation ...

AI Technical Summary

Problems solved by technology

The combined system has the disadvantages of complex calculation, large pipe diameter requirements, and high cost, and the mixed rainwater will cause large fluctuations in the incoming water of the sewage plant, and low concentration of incoming water in rainy days.

[0004] Rural sewage has the characteristics of large fluctuations in water volume, relatively scattered, and small-scale sewage treatment in villages and towns, so the urban sewage collection model cannot be simply applied

The construction of rural sewage collection system is low, and there is a lack of targeted calculation standards, and the sewage collection system accounts for a large proportion of the cost of the entire rural sewage treatment system. Too high, poor collection effect, etc.

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