分流制雨水与合流制溢流水质的比较

Sewer water quality comparison of separate discharge and combined overflow

排水管道系统是城市基础设施的重要组成部分,它的完善程度影响着整个污水处理和水污染控制系统的运行状况和效率。而排水体制的选择需要结合当地的地形、降雨类型、管理情况等实际情况出发,综合分析确定。从实测数据和理论计算两个方面对分流制雨水和合流制溢流的浓度和污染负荷量进行了初步的比较,简要地讨论了两种排水系统的适用条件,为排水体制的选择和城市水污染控制的战略决策提供参考。

Drainage system is an important makeup of urban infrastructure, which affects remarkably the operation and efficiency of sewage disposal and control system of water pollution. Moreover, the choice of drainage system should be combined with the topography, rain type and management etc. In this article the concentration and pollution loads of separate sewer discharge and combined sewer overflow are compared from field measurements and theoretic calculation resuits. The advantage or disadvantage and availability of the two drainage systems are also briefly discussed, which provides a reference to selection of drainage system and strategic decision of urban water pollution control.