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垃圾填埋场废水处理系统中的微塑料和per-和多基物质 (PFAS):一个现场研究

Andres F Prada¹, John W Scott¹, Lee Green¹

¹Illinois Sustainable Technology Center, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA.

The Science of the total environment

|October 8, 2024

概括

污水处理厂 (WWTP) 减少将微塑料和和多基物质 (PFAS) 排放到地表水中. 然而,这些污染物会在生物固体中积聚,在填埋或作为肥料使用时会带来风险.

科学领域:

环境科学环境科学
环境化学环境化学
环境工程环境工程

背景情况:

垃圾填埋场和废水处理厂 (WWTP) 是新出现的污染物的重要来源,如微塑料和和多基物质 (PFAS).
之前的研究经常单独估计微塑料和PFAS的丰度,使用阻碍质量平衡计算的粒子计数.
在综合垃圾填埋-WWTP系统中了解污染物的命运对于有效的环境管理至关重要.

研究的目的:

量化垃圾填埋场液和WWTP流入,废水和生物固体中的微塑料和PFAS质量.
评估WWTPs对微塑料和PFAS的去除效率.
评估污染物通过生物固体重新进入环境的可能性.

主要方法:

从美国伊利诺伊州的四个垃圾填埋-WWTP系统采集了垃圾填埋液,WWTP影响物,废水和生物固体的样本.
微塑料质量 (微克塑料/L) 和PFAS度 (ng/L) 的量化.
质量平衡计算以跟踪整个系统的污染物分区.

主要成果:

在WWTP流量中的微塑料度与垃圾填埋场液 (10^2μg/L) 相似.
垃圾填埋场液中的PFAS度 (ppb范围) 比WWTP影响的 (ppt范围) 高.
废水处理器显著降低了废水中的微塑料和PFAS度,但将它们集中在生物固体中.

结论:

清洁水处理方案有效降低排放废水中的微塑料和PFAS含量,保护地表水.
来自WWTP的生物固体积累了大量的微塑料和PFAS.
垃圾填埋或用污染的生物固体施肥可以重新将这些污染物引入环境.

关键词:

生物固体是一种生物固体.废水是如何处理的垃圾填埋场的洗液是如何处理的液体色谱学液体色谱学液体色谱学微塑料和PFAS的使用情况光学显微镜是一种光学显微镜.污水影响污水的影响.

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