连接蓝绿色基础设施元素以减少综合下水道溢流
Giovan Battista Cavadini1, Mayra Rodriguez2, Lauren M Cook2
1Department of Urban Water Management, Swiss Federal Institute for Aquatic Research (Eawag), Überlandstrasse 133, 8600, Dübendorf, Switzerland; Institute of Environmental Engineering, ETH Zürich, John-von-Neumann-Weg 9, 8049, Zürich, Switzerland.
Journal of environmental management
|June 20, 2024
概括
结合蓝绿基础设施 (BGI) 元素,如拘留池,可以显著减少综合下水道溢出 (CSO). 然而,BGI组合的有效性取决于类型,区域和路线等因素,拘留池可能会增加CSO频率.
科学领域:
- 环境工程 环境工程
- 城市水文学 城市水文学
- 水资源管理 水资源管理
背景情况:
- 综合下水道溢出 (CSO) 是城市水污染的主要来源.
- 蓝绿基础设施 (BGI) 通过管理雨水提供了一个解决方案.
- 以前的研究通常集中在个别的BGI类型上,而不是它们的现实世界组合.
研究的目的:
- 系统地评估各种BGI组合的CSO缓解潜力.
- 评估不同BGI元素,实施率和路由方案的影响.
- 量化BGI在减少CSO排放和频率方面的有效性.
主要方法:
- 评估了60个BGI组合,使用了四个元素 (生物防护,透气路面,绿色屋顶,拘留池).
- 评估了四个实施率 (25-100%的流域面积) 和四个流水路线方案.
- 利用水文建模来量化CSO体积减少和频率.
主要成果:
- BGI的组合大大减少了CSO的数量,但拘留池可以增加CSO的频率.
- BGI组合的性能不同于单个BGI效应的总和.
- 较大的实施领域并不总是更具成本效益;最佳策略取决于目标.
结论:
- BGI组合对于CSO缓解至关重要,拘留池发挥着关键作用.
- BGI类型,实施区域和流水路线是减少CSO的关键因素.
- 需要一种系统的方法来制定针对城市水域的定制BGI战略.
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