Urban rainwater pipe network non-point source pollution interception aging potential evaluation method based on initial rainwater collection, regulation and storage
A rainwater pipe, regulation and storage technology, applied in urban environmental planning, flood disaster prevention and water supply and drainage fields, can solve problems such as deterioration of water environment quality, and achieve strong practicability
Pending Publication Date: 2022-07-12
TONGJI UNIV
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Problems solved by technology
Pollutants in urban rainwater runoff mainly come from the erosion of the underlying surface of the city by rainwater and the sediments during the transportation of the drainage pipe network. Pollutants enter the receiving water body with the rainwater runoff, resulting in serious deterioration of the water environment quality
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[0113] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0114] The specific situation of the embodiment is shown in Table 1:
[0115] Table 1 List of rainwater drainage systems around a city sewage treatment plant in Shanghai
[0116]
[0117] The present invention is used to comprehensively evaluate the interception time of non-point source pollution of the rainwater pipe network in the embodiment. The target ratio, or the concentration of outflow pollutants begins to drop significantly, and an inflection point phenomenon occurs. Specific steps are as follows:
[0118] S1. Collect raw data raw...
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The invention discloses an urban rainwater pipe network non-point source pollution interception aging potential evaluation method based on initial rainwater collection, regulation and storage, and the method comprises the steps: firstly, according to the characteristics and influence factors of the pipeline hydraulic transmission efficiency, the pipe network mixed connection strength, the pipeline deposition strength, the underlying surface characteristics of a water collection region, the pump station and operation level, and the interception regulation and storage capability; 17 indexes are selected, and an evaluation system of urban rainwater pipe network non-point source pollution interception aging potential indexes based on initial rainwater collection, regulation and storage is constructed; and evaluating the index system by using a matter-element extension-analytic hierarchy process comprehensive evaluation model, specifically, constructing an evaluation index matrix and a judgment matrix in combination with regional characteristics, and further obtaining a criterion layer correlation matrix and a weight vector, thereby obtaining the potential level of the urban rainwater pipe network non-point source pollution interception time efficiency of initial rain collection, regulation and storage. The method can be used for pre-judging the development potential in the early stage of initial rainwater regulation and storage project construction planning construction, provides a basis for scientific decision making, and has relatively high scientificity and practicability.
Description
technical field [0001] The invention relates to the technical fields of urban environment planning, flood disaster prevention and water supply and drainage, in particular to a potential evaluation method for the interception and aging of non-point source pollution of urban rainwater pipe networks based on the collection, regulation and storage of primary rain. Background technique [0002] With the continuous improvement of point source pollution control and the rapid development of urbanization, the proportion of urban non-point source pollution is increasing, and it has become one of the main pollution sources of urban water environment. Rainfall is the driving force for the formation of urban non-point source pollution, and the runoff formed by rainfall is the carrier of the migration of non-point source pollutants. Therefore, urban non-point source pollution in a narrow sense refers to urban rainwater runoff pollution. The pollutants in the urban rainwater runoff mainly ...
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Login to View More IPC IPC(8): G06Q10/06G06Q50/06E03F7/00E03F5/22E03F1/00
CPCG06Q10/06393G06Q50/06E03F1/00E03F5/22E03F7/00E03F2201/10Y02A10/40
Inventor 徐竟成顾韫辉罗彪黄菊文李光明
Owner TONGJI UNIV