Urban Pollution Research Centre, Middlesex University, Hendon Campus, The Burroughs, London NW4 4BT, United Kingdom.
Water Res. 2011 Feb;45(4):1549-60. doi: 10.1016/j.watres.2010.11.027. Epub 2010 Nov 24.
An increasing worldwide interest in water recycling technologies such as greywater treatment and reuse suggests that additional research to elucidate the fate of xenobiotics during such practices would be beneficial. In this paper, scenario analyses supported by empirical data are used for highlighting the potential fate of a selection of xenobiotic micropollutants in decentralised greywater treatment systems, and for investigation of the possible implications of greywater recycling for the wider urban water cycle. Potential potable water savings of up to 43% are predicted for greywater recycling based on Danish water use statistics and priority substance monitoring at a greywater treatment plant in Denmark. Adsorption represents an important mechanism for the removal of cadmium, nickel, lead and nonylphenol from influent greywater and therefore the disposal route adopted for the generated sludge can exert a major impact on the overall efficiency and environmental sustainability of greywater treatment.
全球对水再利用技术（如灰水处理和再利用）的兴趣日益浓厚，这表明有必要开展更多的研究来阐明这些实践过程中外来污染物的归宿。本文采用情景分析方法，并辅以实际数据，重点阐述了在分散式灰水处理系统中选择的一组外来微量污染物的潜在归宿，以及灰水再利用对更广泛城市水循环可能产生的影响。基于丹麦的用水统计数据和丹麦一家灰水处理厂的优先物质监测数据，灰水再利用预计可将饮用水节约量最高提高到 43%。吸附是从灰水中去除镉、镍、铅和壬基酚的重要机制，因此，所产生的污泥的处置方式会对灰水处理的整体效率和环境可持续性产生重大影响。
