| 上海高密度居民区合流制系统雨天溢流水质研究 |
| 摘要点击 1341 全文点击 1085 投稿时间：2005-11-29 修订日期：2006-01-04 |
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| 中文关键词 城市面源污染 合流制溢流 事件平均浓度 对数正态分布 相关性分析 |
| 英文关键词 urban non-point pollution combined sewer overflow EMC lognormal distribution correlation analysis |
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| 中文摘要 |
| 城市面源污染已成为上海城区河道的主要污染源.为此,研究了上海市合流制排水区域SA雨天溢流的水质特性,并探讨了溢流水质的主要影响因素.结果表明,该区域雨天溢流COD、BOD、SS、NH3-N、TN、TP事件平均浓度的均值分别为614mg/L、208.5 mg/L、684 mg/L、17.6 mg/L、29.8 mg/L、3.0 mg/L,远高于国外的一些研究结果;分析事件平均浓度的对数正态概率分布表明,BOD的对数正态分布性最好;此外,研究还发现COD和SS溢流浓度和前期晴天数与降雨历时的比值呈现出较高的正相关性. |
| 英文摘要 |
| The urban non-point pollution has become main pollution resource of urban water bodies of Shanghai.Character of combined sewer overflow from watershed SA in Shanghai was studied,and the correlation of influence factors to the EMCs of overflows was discussed.It is found that the EMCs of COD、BOD、SS、NH3-N、TN、TP are 614(mg/L)、208.5(mg/L)、684(mg/L)、17.6(mg/L)、29.8(mg/L)、3.0(mg/L) respectively,and the values obtained herein are much higher than the documented data from other countries.From the probability plot of the EMCs,it is found that the BOD has the best fitness for lognormal distribution;and correlation between the EMCs of COD、SS and the ratio of antecedent dry weather time to rain duration is quite good. |
