通过管道追逐消毒副产品:66个DBPs如何随着时间的推移在化与化化配送系统中发生变化
Erik Niehaves1, Patrick T Justen1, Ashley A Perkins1
1Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, United States.
Water research
|October 23, 2025
概括
消毒副产品 (DBP) 的水平在饮用水配送系统中发生显著变化. 系统的DBPs增加,而胺系统的DBPs和细胞毒性随着时间的推移而降低.
科学领域:
- 环境化学环境化学
- 水的质量 水的质量
- 公共卫生 公共卫生
背景情况:
- 消毒副产品 (DBPs) 在水处理过程中形成,但可以在配送系统中发生变化.
- 了解DBP的时空趋势对于饮用水安全至关重要.
- 剩余的消毒剂 (与胺) 影响DBP的形成和降解.
研究的目的:
- 为了检查两个饮用水分配系统中的9个类别66个DBP的时空趋势.
- 为了比较DBP随着时间的推移在和胺残留消毒下发生的变化.
- 评估DBP变化对分布系统中计算的细胞毒性的影响.
主要方法:
- 在两个分销系统中,在六个时间点在三天内对四条路线进行抽样.
- 对9个类的66个DBP进行分析.
- 从处理厂到消费者追踪水包,以"追逐"DBP的演变.
- 基于测量的DBP度计算细胞毒性.
主要成果:
- 在系统中,总的DBP增加了32%,但在胺系统中下降了23%.
- -DBPs在系统下降了64%;酸和酸在胺系统中达到系统中期的峰值.
- 计算的细胞毒性在系统下降了41%,在胺系统下降了33%.
结论:
- 在和胺残留消毒过程中,DBP的形成/降解动态显著不同.
- 胺系统显示DBPs和相关的细胞毒性总体下降.
- 系统向化DBP转变,影响了整体细胞毒性趋势.
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