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这里变得越来越热:热量对温度的影响,消毒,以及饮用水分配系统中的机会性病原体
Kirin E Furst1, Katherine E Graham2, Richard J Weisman1
1Department of Civil, Environmental, & Infrastructure Engineering, George Mason University, 4400 University Drive, Fairfax, VA 22030, United States.
Water research
|June 20, 2024
概括
全球气温上升增加饮用水分配系统 (DWDS) 的热量,促进机会性病原体 (OP) 的生长. 高温挑战消毒剂的有效性,危及水质和公共卫生.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 公共卫生 公共卫生
背景情况:
- 气候变化正在增加全球气温,影响饮用水分配系统 (DWDS).
- 升高的DWDS温度通过物理,化学和微生物途径降低水质.
- 高温促进了耐热的机会性病原体 (OPs) 的生长,如雷吉欧内拉肺炎和纳格莱里亚虫.
研究的目的:
- 批判性地审查有关DWDS温度,消毒剂衰变以及高温下OP生存/生长的现有文献.
- 综合当前的知识,并确定OP扩散和控制在温暖的DWDS的研究优先事项.
- 评估气温上升对水质的影响以及与DWDS相关的公共卫生风险.
主要方法:
- 文献综述和对DWDS温度,消毒剂衰变动力学和OP行为研究的综合.
- 分析DWDS中报告的高温,包括最大值和日间变化.
- 在高温下对OP生存和复制的评估以及和胺等消毒剂的有效性.
主要成果:
- 已记录过超过40°C的DWDS温度,最高为52°C,以及显著的日间波动.
- 许多OP可以在这些高温下生存和复制,这对公众健康构成重大风险.
- 的衰变速度随着某些水域的温度而增加,但这种关系尚未完全理解,并且很难在现实世界DWDS中建模. 胺的衰变通常较慢,但在更高的温度下化仍然令人担忧.
结论:
- 关于OP持久性,传染性和微生物社区在高DWDS温度下转移的重大知识差距存在.
- 了解和预测DWDS温度和消毒剂衰变动态对于有效的水质管理至关重要.
- 工业协作和进一步的研究对于制定减轻热量影响和保护DWDS公共健康的战略至关重要.
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