微塑料和轮胎磨损颗粒在雨水池中的保留
Lasse Abraham Rasmussen1, Fan Liu1, Nanna Dyg Rathje Klemmensen1
1Aalborg University, Department of Built Environment, Thomas Manns Vej 23, 9220 Aalborg Øst, Denmark.
Water research
|November 17, 2023
概括
雨水保留池有效地从城市排水中去除微塑料和轮胎磨损颗粒. 这些系统保留了88-95%的微塑料和95%的轮胎磨损材料,改善了水质.
科学领域:
- 环境科学 环境科学
- 水质管理水质管理
- 污染物分析 污染物分析
背景情况:
- 城市雨水排放带有各种污染物.
- 新出现的污染物如微塑料和轮胎磨损颗粒构成环境风险.
- 雨水保留池对这些特定污染物的有效性尚未得到充分证实.
研究的目的:
- 量化微塑料和轮胎磨损物质通过雨水保留池的去除.
- 评估保留池在管理新出现的污染物的表现.
- 提供有关这些系统在改善水质方面的有效性数据.
主要方法:
- 使用超光谱成像分析池废水和沉积物中的微塑料.
- 在样本中的轮胎磨损材料的量化通过热解-GC-MS.
- 质量平衡计算以确定移除效率.
主要成果:
- 在所有样本中检测到微塑料,小颗粒 (<500微米) 的去除率为88%,大颗粒 (>500微米) 的去除率为95%.
- 在所有沉积物中发现了轮胎磨损材料,并且在废水中发现了最小的材料,这表明平均95%的清除效率.
- 雨水保留池显示了微塑料和轮胎磨损材料的高保留率.
结论:
- 雨水保留池在从城市排水中去除微塑料方面非常有效.
- 这些池还在去除轮胎磨损材料方面表现出显著的有效性.
- 蓄水池是缓解雨水管理中新出现的污染物的宝贵工具.
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