Pharmaceutical and personal care products (PPCPs) in urban receiving waters
Pharmaceutical and personal care products (PPCPs) in urban receiving waters
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DOI：
10.1016/j.envpol.2005.12.018
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发表时间：
2006-11-01
影响因子：
8.9
通讯作者：
Ellis, J. B.
中科院分区：
文献类型：
--
作者：
Ellis, J. B.
在城市水循环中，药品和个人护理产品（PPCP）排放物的运输途径包括联合和单独的下水道系统，只有前者接受处理。从污水处理厂（STW）排放到北伦敦流后，选定PPCPs的干燥天气流稀释模式表明下游浓度持续增加。稀释率分析还表明，污水处理厂的最终流出物只有助于稀释的内源性浓度已经存在于河流流量，反映了渐进的PPCP负荷与城市化的增加，“最坏情况”的情况下可能与潮湿的天气条件。最大PPCP浓度低于报告的PEC水平，分析强调了常规急性毒性在评估间歇性城市排放的长期影响方面的不足。地下水分析指出，污水抽取在PPCP影响方面仅限于25-50厘米深。(c)2006爱思唯尔有限公司保留所有权利。
The transport pathways of pharmaceutical and personal care products (PPCP) discharges within the urban water cycle include both combined and separate sewer systems with only the former receiving treatment. The dry-weather flow dilution patterns for selected PPCPs following discharge from a sewage treatment works (STW) to a North London stream indicate a persistent downstream increase in concentration. The dilution ratio analysis also indicates that the STW's final effluent only contributes a dilution of the endogenous concentrations already present in the river flow which reflects a progressive PPCP load with increasing urbanization; "worst-case" scenarios being probably related to wet-weather conditions. Maximum PPCP concentrations fall above the reported PEC levels and the analysis highlights the deficiencies of conventional acute toxicity for the evaluation of long-term effects of episodic urban discharges. Groundwater analysis points to sewer extiltration which is limited in terms of PPCP impact to 25-50 cm depths. (c) 2006 Elsevier Ltd. All rights reserved.