Construction and application of comprehensive environmental benefit assessment index system for detention tank
Combined sewer overflow and runoff pollution in the early stage of rainfall are becoming main factors affecting the urban rivers,lakes and other natural water bodies.Detention tanks can intercept the runoff and delay it to send to the sewage treatment plant,which is an effective means to reduce urban runoff pollution.In recent years,detention tanks have been built in various places of China,and have been gradually put into operation.However,there is still a lack of scientific and appropriate method to evaluate detention tanks.Focusing on the role of detention tanks in pollution reduction,flood drainage,runoff intercepting,utilization efficiency and comprehensive sensory,a set of comprehensive environmental benefit assessment index system for detention tank was constructed and it was applied to evaluate the detention tanks in Dingshan River Basin,Longgang District,Shenzhen City,where the detention tank construction and data monitoring were sophisticated.Results showed that under various designed and measured rainfall conditions,this index system could visually and simply evaluate the objective effect of detention tank on pollution reduction and water quantity regulation.Therefore,the index system provided technical support for comprehensive quantitative analysis of the comprehensive environmental benefits of detention tank.
detention tankcomprehensive environmental benefitindex systemDingshan River Basin
万方数据
维普
