Midpoint generalized watercourse pollution-holding capability risk estimation and planning rationalization promotion method

Abstract

The invention discloses a midpoint generalized watercourse pollution-holding capability risk estimation and planning rationalization promotion method. The method includes the following steps that firstly, whether a pollution-holding river segment planned sewage outlet is suitable for sewage outlet midpoint generalization or not is determined, and the pollution-holding capacity of the river segmentis calculated; secondly, the initial section position x, the standard control section position x' and the initial section pollutant concentration C0 of the river section are determined, and the average flow speed u of the river section and the watercourse flow Q are measured; thirdly, according to the measurement result, the pollutant degradation coefficient k and the uncertainty alpha of the river section are determined; fourthly, the standard pollutant concentration Cs of a control section is determined, and the variance D(W) of the pollution-holding capability of the river section is calculated; fifthly, according to the variance D(W) of the pollution-holding capability and the planned pollution-holding capability, uncertain risks of the watercourse pollution-holding capability are determined, and planning rationalization is promoted by using the result. By means of the method, uncertain risks caused by uncertain degradation coefficient in a watercourse to pollution-holding capability calculation can be effectively estimated, watercourse water quality planning rationalization is promoted, and the method is easy to popularize in various kinds of watercourse water quality management.

Description

technical field [0001] The invention relates to a method for estimating the risk of the pollution-carrying capacity of a river course with a generalized midpoint and a method for promoting the rationalization of planning, and belongs to the field of river course water quality management. Background technique [0002] The determination of river pollution-holding capacity is an important means of river water quality management. Whether the calculation result of river pollution-holding capacity is accurate determines the level of river water quality management and the success of river water protection. In the process of calculating the sewage-holding capacity of the river, the sewage outfall is often generalized to be at the midpoint section of the sewage-containing river; this generalization method of the sewage outfall is called the midpoint generalization of the sewage outfall. Although the calculation of river pollution-holding capacity under the previous mid-point generali...

AI Technical Summary

Problems solved by technology

Although the calculation of river pollution-holding capacity under the previous mid-point generalization method is relatively mature, it does not consider the risk of uncertainty brought by the uncertainty of degradation coefficient to the calculation of pollution-holding capacity at all.

The unknown pollution-holding capacity risk has a very adverse impact on the formulation of river water quality goals, and may also bring unreasonable water quality planning to the river

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