| Title |
Evaluation of Nonpoint Pollutant Management Effect by Application of Organic Soil Ameliorant Based on Renewable Resources in Urban Watershed |
| Authors |
박윤경 ( Yoonkyung Park ) ; 안창혁 ( Chang Hyuk Ahn ) |
| DOI |
https://doi.org/10.15681/KSWE.2024.40.3.131 |
| Keywords |
Green infrastructure; Non-point sources pollution; Organic soil ameliorant; Recycled resources; Stormwater runoff |
| Abstract |
This study investigated the chemical properties of Organic Soil Amendments (OSAs) made from organic waste. It also assessed the effectiveness of using these OSAs in the soil layer of Green Infrastructure (GI) to reduce stormwater runoff and non-point source pollutants. The goal was to improve the national environmental value through resource recycling and contribute to the circular economy transformation and carbon neutrality of urban GI. The OSAs used in this study consisted of spent coffee grounds and food waste compost. They were found to be nutrient-rich and stable as artificial soils, indicating their potential use in the soil layer of GI facilities. Applying OSAs to bio-retention cells and permeable pavement resulted in a reduction of approximately 11-17% in stormwater runoff and a decrease of about 16-18% in Total Phosphorus (TP) discharge in the target area. Increasing the proportion of food waste compost in the OSAs had a positive impact on reducing stormwater runoff and pollutant emissions. This study highlights the importance of utilizing recycled resources and can serve as a foundation for future research, such as establishing parameters for assessing the effectiveness of GI facilities through experiments. To enable more accurate analysis, it is recommended to conduct studies that consider both the chemical and biological aspects of substance transfer in OSAs. |