Method for estimating sewage-holding capacity of small rivers with uncertain degradation coefficient under arbitrary multi-point generalization of planned sewage outlets

Abstract

The invention relates to a method for estimating the pollution-holding capacity of small rivers with uncertain degradation coefficients under arbitrary multi-point generalization of planned sewage outlets. The number n and location of sewage outlets planned on the section, and the number n' and location x of sewage outlets after generalization are determined according to the survey results i (i=1,2,...,n'); (2) Measure and determine the position x' of the up-to-standard control section of the pollution-receiving section of the small river, and the initial section pollutant concentration C 0 , measure the average flow velocity u of the river section, and the river flow Q; (3) determine the pollutant degradation coefficient k and its uncertainty α of the small river section according to the measurement results of step (2); (4) calculate the pollution-holding capacity of the river section The mathematical expectation E(W) of is used as the pollution-holding capacity of the river section. The method of the invention is advanced and scientific, can effectively estimate the pollution-holding capacity of the river channel under the condition of arbitrarily planned sewage outlets and the degradation coefficient is uncertain, and improves and improves the management level of the water quality of the river channel.

Description

technical field [0001] The invention relates to a method for estimating the pollutant-holding capacity of a small river channel with an uncertain degradation coefficient under arbitrary multi-point generalization of planned sewage outlets, and belongs to the field of river channel 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 correct 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 a river, multiple sewage outfalls are often generalized into a single sewage outfall; The calculation does not consider the influence of the uncertainty of the pollutant degradation coefficient on the pollution-holding capacity of the river, which leads to the deviation of the calculation results of th...

AI Technical Summary

Problems solved by technology

In the process of calculating the sewage-holding capacity of a river, multiple sewage outfalls are often generalized into a single sewage outfall; The calculation does not take into account the influence of the uncertainty of the pollutant degradation coefficient on the pollution-holding capacity of the river, which leads to the deviation of the calculation results of the pollution-holding capacity of the river, and has a very negative impact on the protection of the water quality of the river.

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