Urban stormwater flooding and pollution are severe issues due to connected impervious surfaces. Over recent decades, solutions to these issues have been towards stormwater source control measures. We developed an innovative cost-efficient stormwater infiltration filter, made of gravel-peat mixture and geotextile. Laboratory column tests were conducted to compare a range of volumetric ratios of gravel (limestone and silica) to peat regarding their heavy metal removal efficiency (RE). The tested heavy metals were cadmium, lead and zinc. All ratios had a high RE (95.9%-100%), despite very high initial metal concentrations. The 5LG:1P mixture (i.e., volumetric ratio of limestone gravel to peat was 5:1) had the highest RE (99.6%-100%) and is suggested as a good candidate for implementation. If a longer-term use is required, a 5SG:10LG:3P mixture (i.e., volumetric ratio of silica gravel, limestone gravel, and peat of 5:10:3) is recommended as it kept the high heavy metal RE with a lower clogging potential and lower cost than the 5LG:1P mixture. The most convenient but expensive filter material with high RE is limestone gravel alone. Finally, we proposed two field designs for implementing the infiltration filter, which incorporate concepts of “treatment train” and “good urban design”. We also provided some suggestions for the installation of gravel-peat infiltration filters.

由于连接的不透水表面，城市雨水泛滥和污染是严重的问题。近几十年来，解决这些问题的方法是采取雨水源控制措施。我们开发了一种创新的、具有成本效益的雨水渗透过滤器，由砾石泥炭混合物和土工布制成。进行了实验室色谱柱测试，以比较砾石（石灰石和二氧化硅）与泥炭的一系列体积比的重金属去除效率 (RE)。测试的重金属是镉、铅和锌。尽管初始金属浓度非常高，但所有比率都具有高 RE (95.9%-100%)。5LG:1P 混合物（即石灰石砾石与泥炭的体积比为 5:1）具有最高的 RE (99.6%-100%)，被建议作为实施的良好候选。如果需要长期使用，5SG:10LG:3P 混合物（即，建议使用二氧化硅砾石、石灰石砾石和泥炭的体积比为 5:10:3），因为它可以保持高重金属 RE，比 5LG:1P 混合物具有更低的堵塞潜力和更低的成本。最方便但最昂贵的高稀土过滤材料是石灰石砾石。最后，我们提出了两种用于实施渗透过滤器的现场设计，其中包含“处理列车”和“良好城市设计”的概念。我们还为安装砾石泥炭渗透过滤器提供了一些建议。我们提出了两种用于实施渗透过滤器的现场设计，其中包含“处理列车”和“良好城市设计”的概念。我们还为安装砾石泥炭渗透过滤器提供了一些建议。我们提出了两种用于实施渗透过滤器的现场设计，其中包含“处理列车”和“良好城市设计”的概念。我们还为安装砾石泥炭渗透过滤器提供了一些建议。