来自废水处理过程的可吸入气溶中的离子和多基物质:时空变化,分散特征,影响因素和风险
Xuyi Wang1, Zhanpeng Zhang1, Yue Zhang1
1School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China.
Journal of hazardous materials
|March 8, 2026
概括
污水处理厂通过细颗粒物 (PM2.5) 释放到空气中的和多基物质 (PFAS). 废水是主要的来源,夏季和过装置是主要的排放因素,造成吸入风险.
科学领域:
- 环境化学环境化学
- 大气科学 大气科学
- 公共卫生 公共卫生
背景情况:
- 和多基基物质 (PFAS) 是持久的环境污染物.
- 污水处理厂 (WWTP) 是大气中的PFAS的潜在来源.
- 了解来自WWTP的细颗粒物 (PM2.5) 中的PFAS对于风险评估至关重要.
研究的目的:
- 调查来自WWTP的PM2.5中的PFAS的时空分布和分散.
- 在WWTP-PM2.5.5中确定PFAS的主要排放来源,季节和影响因素.
- 评估与吸入来自WWTP的PFAS载PM2.5相关的人类健康风险.
主要方法:
- 在PM2.5和废水中检测典型的PFAS,跨季节和处理单元.
- 环境空气样本中的PFAS度和物种的量化 (上风/下风).
- 估计PFAS排放率和分散距离,并通过吸入进行暴露风险评估.
主要成果:
- 精细电网过装置和夏季被确定为PM2.5传播的PFAS的主要排放来源和季节.
- perfluorooctanoic 酸是 WWTP-PM2.5.5 中最丰富的 PFAS.
- 废水对WWTP-PM2.5有很大的贡献 (~50%),排放量达到47.00毫克/天,分散在40公里以上.
- 吸入带来了风险,儿童在工厂边界之外面临更大的威胁.
结论:
- 废水是PM2.5中PFAS的主要来源,这些PM2.5来自WWTPs.
- 来自WWTP的PFAS的气溶化对大气构成重大风险.
- 有针对性的控制策略是必要的,以减轻PFAS排放和相关的健康风险.
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