合流制排水系统截流倍数优选  

Optimization of interception ratio in combined sewer

作　　者：张超[1,2] 姜应和[2] 

机构地区：[1]安徽国祯环保节能科技股份有限公司,合肥230088 [2]武汉理工大学土木工程与建筑学院,武汉430070

出　　处：《环境工程学报》2015年第6期2771-2776,共6页Chinese Journal of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07316-001)

摘　　要：合流制排水系统截流倍数的选择对截流改造工程的环境效益、管网及污水厂建设投资和运行成本均起着决定性的作用。以巢湖市旧城区排水系统为例,利用改进型雨水管理模型(SWMM),通过单位投资最大环境效益的截流倍数优选方法,确定最优的截流倍数。研究结果表明,以最大单位投资环境效益为优化目标,得到最佳截流倍数为4.0,COD、TN和TP的去除比分别为11.7%、1.2%和13.7%。此外,在截流倍数取4.0时,截流式合流制系统全年溢入环城河的污染物总量已小于分流制雨水管道直接排入环城河的污染物量,达到合流制排水系统分流化的效果。The interception ratio selection in combined sewer plays a crucial role in the environmental benefits of sewage interception reform,investment and operation cost of pipe network and wastewater treatment plants( WWTPs). In this study,an advanced storm water management model( SWMM) and the maximum environmental benefit of unit investment method were applied to interception ratio selection for the drainage system of Chaohu inner city,Anhui Province,China. Results showed that the optimization of interception ratio in combined sewer of Chaohu City was 4. 0 and COD,TN,TP removal rates were 11. 7%,1. 2%,13. 7% when the environmental benefits of unit investment reached the maximum. In addition,when the interception ratio was 4.0,the annual total amount of pollutants overflowed into Huancheng River from intercepting combined system were less than that from separated rainwater pipes,which achieved the objective of combined system shunting.

关 键 词：合流制排水系统 截流倍数 雨水管理模型 优选 

分 类 号：TU992[建筑科学—市政工程]