基于SWMM模型的城市初期雨水调蓄设施优化设计模拟  

Design optimization of urban initial rainwater regulation and storage facilities based on SWMM model

作　　者：席慕凡 王先锋[1] 黎世荇 赵林春 杜翠红 XI Mufan;WANG Xianfeng;LI Shixing;ZHAO Linchun;DU Cuihong(East China Engineering Science and Technology Co.,Ltd.,Hefei 230024,China)

机构地区：[1]东华工程科技股份有限公司,合肥230024

出　　处：《工业用水与废水》2023年第3期42-46,共5页Industrial Water & Wastewater

基　　金：安徽省重点研发计划项目(1804a0802194)。

摘　　要：为了优化城市小流域面源污染控制工程中初期雨水调蓄设施的设计,以某城市内河流域为研究对象,在重现期为1 a的降雨条件下,利用SWMM降雨径流污染模型,模拟得出了初期雨水调蓄设施最佳调蓄深度为5 mm;同时,对比了在流域下游集中设置调蓄设施和流域分散布置调蓄设施的污染控制效果,发现分散布置调蓄设施对于初期雨水的收集将更加均衡,COD、NH_(3)-N、TP的削减率均高于集中布置方案。研究表明通过SWMM模型模拟降雨径流污染规律,可以为城市面源污染控制措施提供技术支持,对控制方案的确定有指导意义。In order to optimize the design of initial rainwater regulation and storage facilities in urban small watershed non-point source pollution control project,taking an urban river as the research object,using SWMM rainfall runoff pollution model under the condition of rainfall of return period was 1 a,the optimal depth of the initial rainwater regulation and storage tank was determined to be 5 mm through the simulation;meanwhile,the pollution control effect of centralized layout and distributed arrangement of regulation and storage facilities in the downstream of the watershed was compared,it was found that,compared to centralized layout mode,distributed arrangement of regulation and storage facility was more balanced for the collection of initial rainwater,and the reduction rates of COD,NH_(3)-N and TP were also higher.The research shows that simulating the law of rainfall runoff pollution by SWMM model can provide technical support for urban non-point source pollution control measures,and has guiding significance for the determination of control schemes.

关 键 词：城市小流域 面源污染控制 SWMM模型 初期雨水 调蓄设施 

分 类 号：TU991.34[建筑科学—市政工程]