Båckström M, Malmqvist P A, Viklander M
Division of Sanitary Engineering, Luleå University of Technology, Sweden.
Water Sci Technol. 2002;46(6-7):159-66.
A strategy for sustainable stormwater management is needed. This study has focused on the relative importance of stormwater as a pollutant source in a catchbasin, if Best Management Practices (BMPs) result in pollutant removal or pollutant redistribution, and methods for screening of stormwater strategies. Stormwater is most likely an important pathway for pollutants in a catchbasin perspective. True pollutant removal can only be achieved if the pollutant sources are eliminated. Until that is reached, we should have the best possible control of the pollutant fluxes in the watershed. This study indicates that the search for a sustainable stormwater strategy could be easier to handle if different "screens" could be used. The Swedish environmental objectives, which try to encapsulate all aspects of sustainability, may be used as a foundation for a "sustainability screen". By using this screen, the "unsustainable" features of different stormwater strategies could be pointed out. A "standards and legislation screen" will be based on the EU Water Framework Directive. As this study has shown, it is doubtful whether the conventional BMPs, such as stormwater ponds and infiltration facilities, produce a sufficient pollutant control.
需要一种可持续雨水管理策略。本研究聚焦于雨水作为集水池污染物来源的相对重要性、最佳管理实践（BMPs）是否能实现污染物去除或污染物重新分布，以及雨水策略的筛选方法。从集水池角度来看，雨水很可能是污染物的重要传输途径。只有消除污染物来源，才能真正实现污染物去除。在达到这一目标之前，我们应尽可能地控制流域内的污染物通量。本研究表明，如果能使用不同的“筛选标准”，寻找可持续雨水策略可能会更容易操作。瑞典的环境目标试图涵盖可持续性的各个方面，可作为“可持续性筛选标准”的基础。通过使用这一筛选标准，可以指出不同雨水策略的“不可持续”特征。“标准与立法筛选标准”将基于欧盟水框架指令。正如本研究所表明的，诸如雨水池塘和渗透设施等传统最佳管理实践能否产生足够的污染物控制效果令人怀疑。
