Combined sewer overflows to surface waters detected by the anthropogenic marker caffeine
Combined sewer overflows to surface waters detected by the anthropogenic marker caffeine
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DOI：
10.1021/es052553l
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发表时间：
2006-07-01
影响因子：
11.4
通讯作者：
Buser, Hans-Rudolf
中科院分区：
文献类型：
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作者：
Buerge, Ignaz J.;Poiger, Thomas;Buser, Hans-Rudolf
废水处理技术的不断进步以及越来越多的家庭连接到废水处理厂（WWTP）通常导致许多污染物的环境负荷减少。尽管如此，仍需进一步减少污染物输入，改善人口稠密地区的地表水质量。在这种背景下，合流下水道溢流作为废水污染物来源的相对贡献引起了越来越多的关注，但这些溢流的定量重要性几乎没有得到研究。在这项研究中，咖啡因被成功地用作化学标记物，以估计瑞士格赖芬湖流域地区下水道溢出的比例。咖啡因是原始生活废水中普遍存在的化合物，典型的人均摄入量约为 16 mg person(-1) d(-1)。在格赖芬湖地区的污水处理厂中，咖啡因大部分被消除（> 99%），从而减少了咖啡因的负荷
Continuous progress in wastewater treatment technology and the growing number of households connected to wastewater treatment plants (WWTPs) have generally resulted in decreased environmental loading of many pollutants. Nonetheless, further reduction of pollutant inputs is required to improve the quality of surface waters in densely populated areas. In this context, the relative contribution of combined sewer overflows as sources of wastewater-derived contaminants has attracted more and more attention, but the quantitative importance of these overflows has barely been investigated. In this study, caffeine was successfully used as a chemical marker to estimate the fraction of sewer overflows in the catchment area of lake Greifensee, Switzerland. Caffeine is a ubiquitous compound in raw, domestic wastewater with typical per capita loads of approximate to 16 mg person(-1) d(-1). In WWTPs of the Greifensee region, caffeine is largely eliminated (> 99%), resulting in much smaller loads of