Green infrastructure for sustainable source water protection

保护饮用水水源的雨水控制需要进行详细的研究，以确保它们将有效地降低污染物的峰值浓度。通常情况下，雨水控制的重点是从大多数小降雨事件中获取径流。然而，水源保护必须考虑降水或融雪事件的影响，这些事件导致浓度超过饮用水处理厂的处理能力。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，许多社区的饮用水也依赖地下水资源，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，包括合并下水道溢出。这项研究的总体目标是验证生物阻力细胞在保护城市饮用水水源方面的作用。这项研究项目将：1)填补雨水基础设施污染物积累和释放方面的数据和知识空白；2)确定雨水控制对污水收集系统规模的水和污染物质量平衡的影响；3)通过实验室规模的立柱实验，确定地下水水质、植物和基质对渗滤液质量、氧化还原电位和锰等金属(在加拿大常见的地下水污染物)的释放的影响；4)评估雨水控制措施在减少雨水和污水合并溢流适应气候变化方面的有效性。与我们的工业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领域接受培训。

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.