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首页> 外文期刊>Environmental Science & Technology >Spatial and Temporal Presence of a Wastewater-Derived Micropollutant Plume in Lake Geneva
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Spatial and Temporal Presence of a Wastewater-Derived Micropollutant Plume in Lake Geneva

机译：日内瓦湖中源自废水的微污染物羽流的时空存在

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摘要

This study discusses the occurrence and environmental risk associated with a micro-pollutant plume originating from the direct discharge of treated wastewater into the Vidy Bay of Lake Geneva, Switzerland. The temporal variations and spatial extent of the plume and its effect on the presence of 39 pharmaceuticals and other micropollutants in the Vidy Bay were assessed over a 10 month period. A pronounced plume was observed from April to October, leading to locally elevated (up to 70-fold) pharmaceutical concentrations compared to the surrounding water column. For three of the measured substances, these plume-associated concentrations were sufficiently high to pose an ecotox-icological risk. The plume depth followed the thermal lake stratification, which moved to lower depths over the course of the warm seasons. Pharmaceutical hotspots associated with the plume were detected as far as 1.5 km downstream of the effluent wastewater outfall, but concentrations typically decreased with increasing distance from the wastewater outfall as a result of dilution and photodegradation. From November to January, when uniform temperature prevailed throughout the water column, no micro-pollutant plumes were detected. In contrast to pharmaceuticals, most pesticides showed homogeneous concentrations throughout the Vidy Bay during the whole study period, indicating that the effluent wastewater was not their dominant source. A strong linear correlation between electrical conductivity and concentrations of wastewater-derived micro-pollutants was identified. This relation will allow future estimates of wastewater-derived micropollutant concentrations via simple conductivity measurements.
机译：这项研究讨论了与微污染物羽流有关的发生和环境风险，这些羽流源自将处理后的废水直接排入瑞士日内瓦湖的维迪湾。在10个月的时间内，评估了烟羽的时间变化和空间范围及其对Vidy Bay中39种药物和其他微污染物的存在的影响。从4月到10月，观察到明显的羽流，与周围水柱相比，导致药物浓度局部升高（最多70倍）。对于三种被测物质，这些与羽流相关的浓度足够高，足以引起生态毒理学风险。羽流深度跟随热湖分层，在温暖的季节过程中逐渐降低到较低的深度。在出水废水出口下游1.5公里处检测到与羽流相关的制药热点，但是由于稀释和光降解作用，浓度通常随着与废水出口距离的增加而降低。从11月到1月，当整个水柱温度均匀时，未检测到微污染物羽流。与药物相反，在整个研究期间，大多数农药在整个维迪湾均显示出均一的浓度，表明流出的废水不是其主要来源。确定了电导率与废水中微量污染物浓度之间的强线性关系。这种关系将允许将来通过简单的电导率测量来估算废水中微量污染物的浓度。

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  • 来源
    《Environmental Science & Technology》 |2011年第11期|p.4702-4709|共8页
  • 作者

    Florence Bonvin; Rebecca Ruder; Nathalie Chevre; Janine Haider; Tamar Kohn;

  • 作者单位

    Ecole Polytechnique Federate de Lausanne (EPFL), Environmental Chemistry Laboratory, School of Architecture,Civil and Environmental Engineering (ENAC), Station 2, 1015 Lausanne, Switzerland;

    Ecole Polytechnique Federate de Lausanne (EPFL), Environmental Chemistry Laboratory, School of Architecture,Civil and Environmental Engineering (ENAC), Station 2, 1015 Lausanne, Switzerland;

    Universite de Lausanne, Institute of Mineralogy and Geochemistry, Faculty of Geosciences and Environment, Anthropole,1015 Lausanne, Switzerland;

    Universite de Lausanne, Institute of Mineralogy and Geochemistry, Faculty of Geosciences and Environment, Anthropole,1015 Lausanne, Switzerland;

    Ecole Polytechnique Federate de Lausanne (EPFL), Environmental Chemistry Laboratory, School of Architecture,Civil and Environmental Engineering (ENAC), Station 2, 1015 Lausanne, Switzerland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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