During storm events, contaminants and sediments from roadways, curbside, parking lots, and lawns in urban environments are mobilized and transported by the stormwater runoff. These contaminants are finally discharged in waterbodies, such as rivers and lakes, with adverse effects on public health and ecosystems. Several studies have reported high levels of heavy metals and nutrients in urban stormwater runoff. Best management practices such as sedimentation and bioretention are not practical in urban environments due to the lack of adequate space; however, filtration systems, such as an in-ground permeable filter system, are being developed because they are practical and feasible. Four different filter materials (calcite, zeolite, sand, and iron filings) were effective in removing individual contaminants (Cd, Cu, Ni, Cr, Zn, nitrate, and phosphate) in tests at 24 h. The present investigation assessed the removal kinetics of contaminants from a simulated stormwater consisting of multiple heavy metals and nutrients by the four filter materials. Batch experiments were conducted to evaluate the removal kinetics of co-existing heavy metals and nutrients from the simulated stormwater. The rate of contaminant removal and overall removal efficiency was found to be dependent on the filter material and contaminant nature, as well as the induced pH changes caused by the filter media. The zero-order kinetic model best described the removal rate of Cu and Ni by sand. The first-order kinetic model was only applicable for nitrate removal by iron filings, and the second-order kinetic model described the removal rates of other contaminants and filter media combinations.

在暴风雨期间，雨水径流会动员和运输城市环境中道路，路边，停车场和草坪的污染物和沉积物。这些污染物最终被排放到河流和湖泊等水体中，对公共卫生和生态系统产生不利影响。几项研究报告说，城市雨水径流中的重金属和养分含量很高。由于缺乏足够的空间，在城市环境中，诸如沉积和生物保留等最佳管理方法不切实际；然而，由于它们是实用且可行的，因此正在开发诸如地下渗透过滤器系统的过滤系统。四种不同的过滤材料（方解石，沸石，沙子和铁屑）可有效去除单个污染物（镉，铜，镍，铬，锌，硝酸盐，和磷酸盐）在24小时内进行测试。本研究评估了四种过滤材料从模拟雨水中去除污染物的动力学，该雨水由多种重金属和养分组成。进行了批处理实验，以评估模拟雨水中共存的重金属和养分的去除动力学。发现污染物的去除速率和总体去除效率取决于过滤器材料和污染物的性质，以及由过滤介质引起的诱导的pH值变化。零级动力学模型最能描述砂中Cu和Ni的去除率。一级动力学模型仅适用于铁屑去除硝酸盐，二级动力学模型描述了其他污染物和过滤介质组合的去除率。本研究评估了四种过滤材料从模拟雨水中去除污染物的动力学，该雨水由多种重金属和养分组成。进行了批处理实验，以评估模拟雨水中共存的重金属和养分的去除动力学。发现污染物的去除速率和总体去除效率取决于过滤材料和污染物的性质，以及由过滤介质引起的pH值的变化。零级动力学模型最能描述砂中Cu和Ni的去除率。一级动力学模型仅适用于铁屑去除硝酸盐，二级动力学模型描述了其他污染物和过滤介质组合的去除率。本研究评估了四种过滤材料从模拟雨水中去除污染物的动力学，该雨水由多种重金属和养分组成。进行了批处理实验，以评估模拟雨水中共存的重金属和养分的去除动力学。发现污染物的去除速率和总体去除效率取决于过滤器材料和污染物的性质，以及由过滤介质引起的诱导的pH值变化。零级动力学模型最能描述砂中Cu和Ni的去除率。一级动力学模型仅适用于铁屑去除硝酸盐，二级动力学模型描述了其他污染物和过滤介质组合的去除率。