饮用水配送系统中的军团菌群动态:剩余耗尽的影响
Tomohiro Nakanishi1, Madoka Hirose1, Yasuhiro Asada2
1Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto University Katsura, Nishikyo, Kyoto 615-8540, Japan.
The Science of the total environment
|November 2, 2024
概括
随着水平的下降,军团菌在饮用水配送系统中增加. 保持消毒剂水平和防止管道腐蚀对于控制军团菌复生至关重要.
科学领域:
- 环境微生物学环境微生物学
- 水质管理水质管理.
- 公共卫生 公共卫生
背景情况:
- 军团菌种类. 军团菌种. 是在水系统中发现的机会性病原体.
- 饮用水配送系统 (DWDS) 可以携带军团菌.
- 了解DWDS中的军团菌动态对于公共卫生至关重要.
研究的目的:
- 为了调查化DWDS中的Legionella发生和社区组成.
- 为了确定流感菌和物理化学水质参数之间的关联.
- 确定影响DWDS中Legionella丰富性和多样性的因素.
主要方法:
- 通过DWDS从水库到远端采样水.
- 量化莱吉奥内拉菌种类的数量. 使用qPCR的基因.
- 社区分析的16SrRNA基因的高通量扩增序列测序.
主要成果:
- 军团菌种类. 军团菌种. 基因丰富度从水库到远部位显著增加 (高达4.4日志副本/L).
- 确定了多种不同的军团菌群,包括潜在的致病物种.
- 莱吉欧内拉社区的多样性和组成在分布系统上发生了变化.
- 减少残留的度与增加的军团菌水平和改变的社区结构有很强的相关性.
结论:
- 剩余衰变是Legionella在DWDS中扩散的主要驱动因素.
- 管道腐蚀和不充分的消毒剂残留物促进了军团菌的再生.
- 维持残留量和防止管道腐蚀的策略对于控制饮用水中的军团菌至关重要.
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