基于SWMM的初期雨水截流效率

Intercepting Efficiency of Urban Initial Rainwater Based on SWMM

初期降雨径流污染是城市面源污染的重要组成。文中以某分流制雨水强排系统为例,通过建立SWMM模型,模拟分析了降雨强度、截流点位置、截流服务半径、管道初始水深对初期雨水截流效率的影响。结果表明:优化截流点设置、减小截流服务半径并降低系统水位能够有效提高初期雨水的截流效率。

Runoff pollution of initial rainwater is an important component of urban non-point source pollution.Taking a separate system as an example,influence of rainfall intensity,interception point location,interception range,and initial water depth of pipeline on intercepting efficiency of urban runoff first flush were simulated and analyzed based on SWMM module.The results showed that optimizing interception point setting,reducing interception service range and system water level could effectively improve intercepting efficiency.