连续降雨条件下调蓄池对城市面源污染削减的模拟  

Simulation on the Reduction of Urban Non-point Source Pollution by Storage Tank under Continuous Rainfall Conditions

作　　者：赵绪峰 陈莉 杨乐 李连文 薛振洲 刘加强[4] ZHAO Xufeng;CHEN Li;YANG Le;LI Lianwen;XUE Zhenzhou;LIU Jiaqiang(Xuzhou Hongda Civil Engineering Laboratory Co.,Ltd.,Xuzhou 221000,China;Hangzhou Leadmap information technology Co.,Ltd.,Hangzhou 311200,China;Hangzhou Urban&Rural construction design institute Co.,Ltd.,Hangzhou 310002,China;School of Environmental Engineering,Xuzhou Institute of Technology,Xuzhou 221111,China)

机构地区：[1]徐州市宏达土木工程试验室有限责任公司,江苏徐州221000 [2]杭州领图信息科技有限公司,浙江杭州311200 [3]杭州市城乡建设设计院股份有限公司,浙江杭州310002 [4]徐州工程学院环境工程学院,江苏徐州221111

出　　处：《供水技术》2024年第1期28-33,共6页Water Technology

基　　金：徐州市重点研发项目(KC19218)。

摘　　要：目前我国水环境整治工作取得阶段性成效,点源污染问题很大程度上得到了解决,而城市面源污染的问题日益成为水环境治理的难点。为有效解决这一问题,以徐州经开区三八河流域为研究区,构建了雨水调蓄池面源污染控制的SWMM模型。通过在Control编辑模块中编辑水泵启闭的控制语言以控制调蓄池的自动排水,通过水泵曲线TYPE1类型对水泵流量大小进行设置以控制排空时间,分析了连续多年实测降雨情况下末端调蓄池的调节次数与污染物削减率。结果表明,调蓄池的调节次数和污染物削减率受其排空时间的影响相对较大,而受其运行规则的影响相对较小。在相同运行规则下,调蓄池24 h排空比48 h排空,可使调节次数的平均值分别增加11.8次(降雨24 h开泵)和12.9次(降雨48 h开泵),并可使COD和TN削减率的平均值分别提高2.28%~2.92%(降雨24 h开泵)和2.2%~2.59%(降雨48 h开泵)。At present,china′s water environment remediation work has achieved phased success.The problem of point source pollution has been solved to a large extent,while the problem of urban non-point source pollution problem has increasingly become the difficulty of water environmental governance.In order to solve this problem effectively,a SWMM model for non-point source pollution control of stormwater storage basin was constructed taking the Sanba River Basin in Xuzhou Economic Development Zone as the research area.By editing the control rule for pump opening and closing in the Control editor module to control the automatic drainage of the reservoir,and by setting the pump flow rate by pump curve TYPE1 to control the emptying time,the regulation times and the pollutant reduction rate of the terminal storage tank under he condition of measured rainfall for many years were analysed.The results show that the regulation times and pollutant reduction rate of the storage tank are greatly affected by its emptying time,but are less affected by its operating rules.Under the same operating rules,the 24 h empting of the storage tank is higher than the 48 h empting,which can increase the average number of adjustment times by 11.8 times(the pump is started 24 hours after rainfall)and 12.9 times(the pump is started 48 hours after rainfall),respectively.The average COD and TN reduction rates can be increased by 2.28%-2.92%(24 hours of rainfall pump)and 2.2%-2.59%(48 hours of rainfall pump),respectively.

关 键 词：面源污染 调蓄池 排空时间 污染物削减率 

分 类 号：TU992[建筑科学—市政工程]