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一个基于来源的框架来估计市政废水中PFAS的年度负载

N Krlovic¹, E Saracevic¹, J Derx²

¹Institute for Water Quality and Resource Management, TU Wien, Vienna, Austria.

The Science of the total environment

|February 16, 2024

概括

这项研究开发了一个模型来估计废水中的Per-和多基物质 (PFAS). 该模型准确地估计了碳酸盐 (PFCAs),但低估了硫酸盐 (PFSAs),强调需要调查商业来源.

科学领域:

环境化学环境化学
环境工程环境工程
毒理学毒理学毒理学

背景情况:

和多基基物质 (PFAS) 是在环境组件中发现的持久化学物质.
污水处理厂 (WWTP) 是 PFAS 排放到水生环境的重要途径.

研究的目的:

开发一个基于来源的负载估计模型,用于7个PFAS的市政废水流入.
为了比较模型估计与WWTP影响的测量负载,并确定差异.

主要方法:

利用了消费者统计数据,关于PFAS度和释放的文献数据,以及环境流量采样.
各种PFAS的估计人均排放负载.
将模型衍生负载与来自WWTP影响力监测活动的数据进行比较.

主要成果:

在建模和测量PFAS负载之间观察到显著差异 (5%~90%).
该模型充分解释了 perfluoroalkyl硫酸 (PFSAs) 的负载,但低估了它们,而它合理估计了 perfluoroalkyl carboxylic acid (PFCAs) 的负载.
消费品主导了PFSA来源,而环境投入和未知的商业活动是PFSA负载的关键.

结论:

废水中的PFAS负载来自消费产品和环境投入.
对商业活动的进一步调查对于理解和量化PFSA来源至关重要.
开发的模型提供了 PFAS 排放途径的洞察力,但对于某些 PFAS 类别需要改进.

关键词:

排放量排放量排放量排放量影响力影响力在MFA中,MFA是最重要的.质量平衡的质量平衡.路径路径路径城市污染城市污染

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