Aalborg University, Department of Built Environment, Thomas Manns Vej 23, 9220 Aalborg Øst, Denmark.
Aalborg University, Department of Built Environment, Thomas Manns Vej 23, 9220 Aalborg Øst, Denmark.
Water Res. 2024 Jan 1;248:120835. doi: 10.1016/j.watres.2023.120835. Epub 2023 Nov 4.
Stormwater runoff from urban areas contain a wide variety of pollutants which is typically managed using stormwater retention ponds. However, their performance with regards to emerging pollutants such as microplastics and tyre wear material remains unclear. In this study, samples of effluent water and sediments from four stormwater retention ponds were analysed for their content of microplastics and tyre wear material. Microplastics were analysed using state-of-the-art hyperspectral imaging technique while tyre wear material was analysed using pyrolysis-GC-MS. Microplastics were recovered in all samples and the mass balance revealed that on average 88% of small microplastics (<500 µm) were retain in the ponds while the removal efficiency for large microplastics (>500 µm) was 95%. Tyre wear material was identified in all sediment samples but found below the detection limit in three out of four effluent samples. On average 95% of the tyre wear material was removed by the retention ponds. The results from this study show that stormwater retention ponds are very effective in removing microplastics as well as tyre wear material from stormwater runoff.
城市地区的雨水径流含有多种污染物，通常采用雨水滞留池进行管理。然而，对于新兴污染物（如微塑料和轮胎磨损材料），它们的处理效果尚不清楚。在这项研究中，对四个雨水滞留池的出水和底泥样品进行了微塑料和轮胎磨损材料含量的分析。微塑料采用最先进的高光谱成像技术进行分析，而轮胎磨损材料则采用热解气相色谱-质谱法进行分析。所有样品中均回收了微塑料，质量平衡显示，平均有 88%的小微塑料（<500µm）被滞留在池塘中，而大微塑料（>500µm）的去除效率为 95%。在所有的底泥样品中都发现了轮胎磨损材料，但在四个出水样品中有三个低于检测限。平均有 95%的轮胎磨损材料被雨水滞留池去除。本研究结果表明，雨水滞留池对于去除雨水径流中的微塑料和轮胎磨损材料非常有效。
