Green infrastructure for sustainable source water protection

为保护饮用水源而采取的雨水控制措施需要进行详细的研究，以确保这些措施能够有效地降低污染物的峰值浓度。通常情况下，雨水控制集中在捕获径流从大多数小降水事件。然而，水源保护必须考虑降水或融雪驱动事件的影响，这些事件导致浓度超过饮用水处理厂的能力。在加拿大，关于雨水控制在降低污染物峰值浓度方面的总体有效性的数据很少。此外，许多社区还依赖地下水资源作为饮用水，因此有必要评估雨水对地下水质量的控制。该提案涉及绿色雨水基础设施，以减少雨水对饮用水供应的威胁，包括混合下水道溢流。本研究的总体目标是验证生物滞留细胞保护城市饮用水源。该研究项目将：1）填补雨水基础设施中污染物积累和释放的数据和知识空白，2）确定雨水控制对污水处理厂规模的水和污染物质量平衡的影响，3）通过实验室规模的柱实验确定雨水质量、植物和基质如何影响渗滤液质量，氧化还原电位和金属如锰的释放（加拿大常见的地下水污染物），和4）评估雨水控制措施在减少雨水和混合下水道溢流对地表水的污染以适应气候变化方面的有效性。与我们的工业合作伙伴合作的高素质人员将在适应气候变化的绿色雨水基础设施和城市水源保护方面接受培训。

Stormwater controls for protecting drinking water sources require detailed study in order to ensure that they will be effective for reducing peak contaminants concentrations. Typically, stormwater controls have focused on capturing runoff from the majority of small precipitation events. However, source water protection must consider the impacts of precipitation or snowmelt driven events that lead to concentrations that exceed the capacity of a drinking water treatment plant. In Canada, there are few data on the overall effectiveness of stormwater controls for reducing peak concentrations of contaminants. Furthermore, many communities also rely on groundwater resources for drinking water and there is a need to evaluate stormwater controls on groundwater quality. The proposal addresses green stormwater infrastructure for reducing threats to drinking water supplies from stormwater, including combined sewer overflows. The overall goal of this research is to validate bioretention cells for protecting urban drinking water sources. The research project will: 1) fill in data and knowledge gaps for contaminant accumulation and release from stormwater infrastructure, 2) determine the impact of the of stormwater controls on water and contaminant mass balances at a sewershed scale 3) determine through laboratory scale column experiments how stomwater quality, plants and substrate influence leachate quality, redox potential and release of metals such as manganese (a common groundwater contaminant in Canada), and 4) evaluate the effectiveness of stormwater controls for reducing surface water contamination from stormwater and combined sewer overflows for climate change adaptation. Highly qualified personnel working with our industrial partner will be trained in the areas of green stormwater infrastructure for climate change adaptation and urban source water protection.