Civil Engineering Department, NIT Kurukshetra, Kurukshetra, Haryana, India E-mail:
Civil Engineering Department, NIT Kurukshetra, Kurukshetra, Haryana, India.
Water Sci Technol. 2024 Jun;89(12):3226-3236. doi: 10.2166/wst.2024.192. Epub 2024 Jun 8.
This study examines the influence of planting mixture variations on the quality of the percolated water of the rain garden with and without plants. Six planting mixtures in experimental rain gardens have been used. It has been noted that pollutant removal efficiency of RG can exhibit variations based on specific parameters. Notably, RG6, utilizing a planting mix of 75% topsoil and 25% compost, demonstrated the highest performance. These results draw attention to the critical role of the specific planting mixtures in influencing the performance of vital parameters related to pollutant removal. The observation shows that RG5 exhibits exceptional removal efficiency in pH, Total Suspended Solids (TSS), Biological Oxygen Demand (BOD), and Chemical Oxygen Demand (COD), and RG6 performs best in electrical conductivity (EC), Total Dissolved Solids (TDS), Total Nitrogen (TN), and Total Phosphorus (TP) removal. In particular, when analyzing pollutant removal on a surface with Madagascar periwinkle plants, RG6 emerges as the most effective, achieving an impressive efficiency of approximately 49%. For the bare surface, pollutant removal efficiency is 40%. The study outcome will be useful in deciding the composition of the planting mixture, which will keep the rain garden to improve quality and quantitatively hydrological performance, lowering urban flooding magnitude.
本研究考察了种植混合变化对有植物和无植物的渗滤花园渗滤水质量的影响。在实验性渗滤花园中使用了六种种植混合物。已经注意到，RG 的污染物去除效率可以根据特定参数表现出变化。值得注意的是，利用 75%表土和 25%堆肥的种植混合物 RG6 表现出最高的性能。这些结果引起了对特定种植混合物在影响与污染物去除相关的重要参数性能方面的重视。观察结果表明，RG5 在 pH 值、总悬浮固体 (TSS)、生化需氧量 (BOD) 和化学需氧量 (COD) 方面表现出出色的去除效率，而 RG6 在电导率 (EC)、总溶解固体 (TDS)、总氮 (TN) 和总磷 (TP) 去除方面表现最佳。特别是，当分析有马缨丹植物的表面的污染物去除时，RG6 是最有效的，其去除效率约为 49%。对于裸露表面，污染物去除效率为 40%。研究结果将有助于决定种植混合物的组成，这将使雨水花园保持改善水质和定量水文性能，降低城市洪水规模。
