Cheng Jiang, Lü Yong-peng, Huang Xiao-fang, Guo Sheng
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China.
Huan Jing Ke Xue. 2009 Aug 15;30(8):2234-40.
Through measuring the processes of precipitation, discharge and pollutant concentration over 20 times from 2006 to 2008 in Chendulu combined sewerage system (CSS) along Suzhou Creek in central Shanghai, the environmental effects of Chendulu combined sewage detention tank (CSDT), the first running CSDT in China, were studied. The results show that CSDT could improve CSS discharge capacity effectively with promoted interception ratio from 3.87 to 6.90-9.92. The mean annual combined sewer overflow (CSO) reduction and reduction rate are 9.10 x 10(4) m3 and 9.00%, respectively, and those of sanitary waste discharged directly to Suzhou Creek in non-rain-weather are 8.37 x 10(4) m(3) and 100% , respectively. The mean annual pollutants decrease rate of COD, BOD5, SS, NH4+ -N and TP of CSO are 13.76%, 19.69%, 15.29%, 18.24% and 15.10%, respectively, and those CSO pollutants decrease 41.21 t, 12.37 t, 50.10 t, 2.12 t and 0.29 t annually, respectively. The CSDT also could decrease sanitary waste discharged to Suzhou Creek totally, and those decreased pollutants are 20.75 t, 4.87 t, 14.90 t, 4.49 t and 0.30 t annually, respectively. The analysis shows that the CSDT design standard, running models and rainfall characteristics are the important influencing factors to realize the environmental effects of CSDT.
通过对上海市中心苏州河沿线成都路合流制排水系统（CSS）在2006年至2008年期间20余次降雨、排水及污染物浓度过程的监测，对国内首个运行的成都路合流污水调蓄池（CSDT）的环境效应进行了研究。结果表明，CSDT能有效提高合流制排水系统的排水能力，截留率从3.87提高到6.90 - 9.92。年均合流污水溢流（CSO）削减量和削减率分别为9.10×10⁴立方米和9.00%，非降雨天气直接排入苏州河的生活污水削减量和削减率分别为8.37×10⁴立方米和100%。CSO中化学需氧量（COD）、生化需氧量（BOD₅）、悬浮物（SS）、氨氮（NH₄⁺ - N）和总磷（TP）的年均污染物削减率分别为13.76%、19.69%、15.29%、18.24%和15.10%，每年CSO污染物削减量分别为41.21吨、12.37吨、50.10吨、2.12吨和0.29吨。CSDT还能完全削减排入苏州河的生活污水，每年削减的污染物分别为20.75吨、4.87吨、14.90吨、4.49吨和0.30吨。分析表明，CSDT的设计标准、运行模式和降雨特征是实现CSDT环境效应的重要影响因素。
