合流污水泵站运行优化模型研究

Study on Operation Optimization Model of Combined Sewage Pumping Station

为了充分利用管网容量以减少降雨期间的泵站放江量,构建了基于InfoWorks CS的上海城区某合流系统的排水模型,研究合流污水泵站提高系统运行水位的可行性及对应的效益与风险。理论估算和模型计算结果表明:场次降雨量小于18.40 mm情况下利用管网容量可实现泵站不放江,完成排水防涝安全和面源污染控制双重任务;对于大于设计重现期的降雨,由于管网能力限制,提高运行水位的风险较大。根据研究结果,提出了基于雨量控制的合流污水泵站运行策略,为合流污水泵站应对面源污染控制的运行优化提供参考。

In order to make full use of the pipe network capacity to reduce the amount of river discharge by the pumping station during rainfall,the drainage model of a combined sewage system in a urban area of Shanghai based on InfoWorks CS is established to study the feasibility of elevating the operating water level of the system and its corresponding benefits and risks of the combined sewage pumping station.The results of theoretical estimation and model calculation show that the utilization of the pipe network capacity can realize the pumping station not to discharge the river when the rainfall is less than 18.40 mm to accomplish the dual tasks of drainage waterlogging prevention and non-point source pollution control.For the rainfall greater than the design return period,due to the limited capacity of the pipe network,the risk of elevating the operating water level is great.According to the study results,an operation strategy of the combined sewage pumping station based on rainfall control is proposed,which provides a reference for the operation optimization of the non-point source pollution control in the combined sewage pumping station.