| 上海中心城区合流制排水系统调蓄池环境效应研究 |
| 摘要点击 1652 全文点击 1334 投稿时间：2008-10-11 修订日期：2008-12-12 |
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| 中文关键词 调蓄池 环境效应 合流制排水系统溢流 城市化 苏州河 |
| 英文关键词 detention tank environmental effect combined sewer overflow(CSO) urbanization Suzhou Creek |
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| 中文摘要 |
| 于2006～2008年同步监测了上海中心城区成都路合流制排水系统20余次的降雨、径流和径流水质过程，研究了国内首座投入使用的城市大型排水系统调蓄池的环境效应.结果表明，调蓄池有效提高了排水系统排水能力，系统截流倍数可从3.87倍提高到6.90～9.92倍.对暴雨溢流和旱流试车溢流的年际平均削减量分别为9.10×104 m3和8.37×104 m3，削减率分别达9.00％和100％.对暴雨溢流COD、BOD5、SS、NH+4-N和TP的年际平均削减率分别为13.76%、 19.69%、 15.29%、 18.24%和15.10%，相应削减量分别为41.21、 12.37、 50.10、 2.12和0.29 t·a-1.调蓄池可100％削减旱流试车溢流污染，相应污染物的削减量分别为20.75、 4.87、 14.90、 4.49和0.30 t·a-1.分析显示调蓄池设计标准、运行模式和降雨条件是影响调蓄池环境效应发挥的重要因素. |
| 英文摘要 |
| 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 9.10×104 m3 and 9.00％, respectively, and those of sanitary waste discharged directly to Suzhou Creek in non-rain-weather are 8.37×104 m3 and 100％, respectively. The mean annual pollutants decrease rate of COD, BOD5, SS, NH+4-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. |
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