降低雨水中的轮胎磨损颗粒和轮胎添加剂化学物质,具有通透的路面
Chelsea J Mitchell1, Anand D Jayakaran2
1School of the Environment, Puyallup Research and Extension Center, Washington State University, 2606 W Pioneer Ave, Puyallup, WA 98371, USA.
The Science of the total environment
|November 8, 2023
概括
透路面有效地从雨水中去除了96%以上的轮胎磨损颗粒和52-100%的有毒6PPD-. 这种绿色基础设施有望减轻水生生态系统中的轮胎污染.
科学领域:
- 环境科学 环境科学
- 绿色雨水基础设施 绿色雨水基础设施
- 生态毒理学 生态毒理学
背景情况:
- 轮胎磨损颗粒 (TWPs) 将微塑料和污染物如6PPD- (6PPDQ) 运送到水生生态系统.
- 6PPDQ对鱼具有急性毒性,在TWPs中由6PPD形成.
- 雨水中的TWPs和相关污染物的命运和缓解尚未得到充分理解.
研究的目的:
- 量化透气路面 (PP) 配方对TWPs和轮胎相关污染物的处理性能,包括6PPDQ.
- 评估PP作为绿色雨水基础设施 (GSI) 的有效性,以减轻轮胎污染.
- 评估碳纤维修改对PP性能和耐用性的影响.
主要方法:
- 进行了三项实验,使用透式路面系统 (混凝土和青,有/没有碳纤维),用冷轮胎颗粒 (cTP) 剂量.
- 影响和废水样本被分析为TWP质量和十个轮胎相关污染物,包括6PPDQ.
- 在不同的条件下评估了路面的性能,以评估污染物去除和泄漏潜力.
主要成果:
- 透气路面在沉积的cTPs质量中减弱了96%以上.
- 据估计,52-100%的潜在漏性6PPDQ被PP系统去除.
- 背景6PPDQ在废水中的度很低 (0-0.0029μg/L),在模拟降雨期间,保留的TWPs的浸出是最小的.
结论:
- 透气路面是有效的GSI,用于减轻轮胎相关的雨水污染.
- 用碳纤维修改的PP提供了更好的强度,可以在交通繁忙的道路上部署.
- PP 系统在减少 TWP 和其污染物带来的环境风险方面具有显著的潜力.
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