| 城市绿地降雨径流污染特征对比研究：以澳门与厦门为例 |
| 摘要点击 4214 全文点击 3120 投稿时间：2009-01-06 修订日期：2009-02-24 |
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| 中文关键词 城市绿地小流域 降雨径流 污染特征 澳门 厦门 |
| 英文关键词 urban lawn catchments rainfall runoff pollution characteristic Macau Xiamen |
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| 中文摘要 |
| 在澳门与厦门分别选一分流制管道类型的绿地小流域开展降雨径流监测，以研究城市绿地降雨径流污染特征.结果表明，两城市绿地小流域降雨径流的主要污染物为COD、TP、NO-3-N，其EMC平均值分别为165.77～60.48 mg/L、 0.96～0.44 mg/L和7.16～1.18 mg/L；两城市绿地的COD、TP、NO-3-N污染负荷平均值分别为6.53～0.63 kg/hm2、 0.037 5～0.004 7 kg/hm2 和0.012 2～0.012 8 kg/hm2；绿地降雨径流污染物浓度峰值出现时间早于径流量峰值；城市绿地降雨径流初始冲刷效应不明显，厦门绿地小流域降雨径流COD、TSS、TP及NO-3-N的FF30分别为36.26%、 26.13%、 28.13% 和39.03%.基于多元回归分析结果表明，总降雨量和总径流量是影响绿地降雨径流污染初始冲刷效应的主要因素. |
| 英文摘要 |
| A comparative study on characteristics of stormwater runoff from two urban lawn catchments in Macau (ELH) and Xiamen (PGH) with separated sewer system were conducted. The result obtained shows that COD, TP and NO-3-N are the major pollutants with mean EMC of 165.77-60.48 mg/L, 0.96-0.44 mg/L and 7.16-1.18 mg/L, respectively, and the mean values of pollutants loads of COD, TP and NO-3-N from study lawn catchments are 6.53-0.63 kg/hm2, 0.037 5-0.004 7 kg/hm2 and 0.012 2-0.012 8 kg/hm2, respectively. Peak values of major pollutant concentrations usually precede the flow peak. First flush effect of rainfall runoff from two study catchments is no obvious, which can be reflected by the low mean value of FF30 of TSS, COD, TP and NO-3-N, with 36.26%, 26.13%, 28.13% and 39.03%, respectively. Based on multivariate statistical analysis, first flush effect from urban lawn rainfall runoff is greatly influenced by total rainfall amount (Tr) and total runoff volume (V). |
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