First flush in a combined sewer system

被引：98
作者：
Barco, Janet [1 ]
Papiri, Sergio [2 ]
Stenstrom, Michael K. [1 ]
机构：
[1] Univ Calif Los Angeles, Dept Civil & Environm Engn, Los Angeles, CA 90095 USA
[2] Univ Pavia, Dept Hydraul & Environm Engn, I-27100 Pavia, Italy
来源：
CHEMOSPHERE | 2008年 / 71卷 / 05期
关键词：
Cascina Scala; urban storm water runoff; monitoring; best management practices (BMPs);
D O I：
10.1016/j.chemosphere.2007.11.049
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Pollutant first flush was examined in an urban catchment with area of 12.7 ha and drained by a combined sewer system located in northern Italy. A total of 23 rainfall-runoff events were monitored and 281 samples were analyzed. The selected quality parameters were biochemical oxygen demand, chemical oxygen demand, suspended solids, settleable solids, total phosphorus, total nitrogen, ammonium nitrogen, lead, and zinc, specific conductivity and hydrocarbons. A subset of representative storms was selected for first flush analysis. The catchment presented a strong first flush for almost all storms and most constituents. The analysis shows that treating the maximum amount of the early part of the runoff is a better strategy than treating a constant flow rate. Best management practices that can treat or store the first runoff are favored in this kind of system for these water quality parameters. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：827 / 833
页数：7
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