Storage pond volume determining method based on runoff pollution control

Abstract

The invention discloses a storage pond volume determining method based on runoff pollution control. The method comprises the following steps of selecting a typical rainfall event to obtain the rainfall quantity change process along with the time; performing monitoring to obtain the rainfall runoff flow rate change process along with the time; sampling contaminants to obtain the rainfall flowing rainwater pipeline water quality change process along with the sampling time; through calculation, obtaining the rainfall runoff pollution load change relationship along with the time and a correlation equation of the rainfall quantity and the runoff pollution reduction rate of each pollution index; performing calculation to obtain a power function relational expression of the rainfall quantity and the runoff pollution reduction rate at different runoff pollution reduction rate values and a plurality of flood storage capacities D; and obtaining a relationship table of the plurality of flood storage capacities D corresponding to the runoff pollution reduction rate and a corresponding relationship table of the flood storage pool volume calculation parameter and the runoff pollution reduction rate for any one rainfall event, and obtaining a relationship table of the flood storage pool volume and the runoff pollution reduction rate. The invention builds a precise simple and applicable runoff pollution control calculation method for the flood storage pool volume.

Description

technical field [0001] The invention relates to the technical field of calculating the volume of a rainwater storage tank, in particular to a method for calculating the volume of a rainwater storage tank based on runoff pollution control and mainly applied to a split-flow rainwater drainage system. Background technique [0002] With the rapid development of urbanization, the ratio of urban impermeable underlying surfaces is increasing, and the coefficient of precipitation runoff is continuously increasing, which leads to the acceleration of urban surface runoff and the increase of runoff flow and peak value when rainfall occurs, which is easy to cause rainwater pipe network system Urban water environment problems such as poor drainage and urban waterlogging. In addition, due to the aggravation of urban non-point source pollution, urban rainfall runoff carries a large amount of pollutants, including solid particles, organic pollutants, nutrients, and heavy metals, by scouring...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of the shortcoming of the important parameter adjustment and storage volume D of the volume calculation formula of the diversion system rainwater storage tank for controlling rainfall runoff pollution according to experience, and the parameter adjustment can be obtained more accurately through experiments. The method of determining the storage capacity D enables the volume of the storage tank to exert better economic and environmental benefits

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