Abstract In order to establish a sustainable stormwater management system, research has focused on Low Impact Development (LID) facilities. This study analyzed the runoff reduction efficiency and pollutant removal efficiency in Bioretention facilities. The results of the study were analyzed using long-term monitoring data over three years, and experiments were carried out using real rainfall and artificial rainfall to simulate various rainfall conditions. The Event Mean Concentration (EMC) is a pollutant concentration value for rainfall events. Based on the analysis of inflow and outflow EMC, TSS was found to have the largest reduction. The reduction ratio for efficiency about pollutant and run-off(%) was monitored for 3 years and more. The itemized data was plotted on chart annually. Based on the annual average pollutant removal efficiency values, all the pollutant removal efficiency values, except the runoff reduction efficiency, showed a decrease in efficiency over time. Based on the results of the study, the necessity for proper maintenance was confirmed. The results of this study are expected to inform further research on non-point pollution reduction facilities.

中文翻译：

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面源污染管理生物滞留设施污染物进出事件平均浓度分析

摘要 为了建立可持续的雨水管理系统，研究的重点是低影响开发（LID）设施。本研究分析了生物滞留设施的径流减少效率和污染物去除效率。研究结果利用三年多来的长期监测数据进行分析，并利用真实降雨和人工降雨进行实验，模拟各种降雨条件。事件平均浓度 (EMC) 是降雨事件的污染物浓度值。根据流入和流出 EMC 的分析，发现 TSS 的减少幅度最大。污染物和径流效率降低率（%）监测3年及以上。逐项数据每年绘制在图表上。根据年平均污染物去除效率值，除径流减少效率外，所有污染物去除效率值都显示效率随时间下降。根据研究结果，确认了适当维护的必要性。这项研究的结果有望为非点源减排设施的进一步研究提供信息。