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引入细菌群体的循环时间,以阐明奥地利大型饮用水分配网络中生物不稳定的时间和空间热点
Lena Campostrini1, Philipp Proksch2, Stefan Jakwerth1
1Medical University of Vienna, Centre for Pathophysiology, Infectiology and Immunology, Institute for Hygiene and Applied Immunology - Water Microbiology, Kinderspitalgasse 15, Vienna A-1090, Austria; Interuniversity Cooperation Centre Water & Health, Austria.
Water research
|February 7, 2024
概括
细菌社区周转时间 (BaCTT) 有效地识别饮用水分配系统 (DWDS) 的生物不稳定性. 这种新方法与生物质不同,与水的年龄和温度等因素相关,精确确定增长热点.
科学领域:
- 环境微生物学 环境微生物学
- 水质管理水质管理
- 公共卫生工程 公共卫生工程
背景情况:
- 由于生物膜,温度和消毒剂的衰变,饮用水质量可能会在配送系统的运输过程中降低.
- 饮用水配送系统 (DWDS) 的生物不稳定性对水的美学,操作和卫生构成风险.
- 评估生物稳定性的现有方法可能无法完全捕捉DWDS内部的动态变化.
研究的目的:
- 综合评估大型化DWDS的生物不稳定性潜力.
- 引入和验证细菌社区周转时间 (BaCTT) 作为生物不稳定的定量参数.
- 将BaCTT的实用性与传统的细菌生物质和活性参数进行比较.
主要方法:
- 在一个大型化DWDS中应用了细菌生物质和活动参数的工具箱.
- 引入的细菌群体周转时间 (BaCTT),用3H-氨酸合并和细菌生物质计算.
- 与水年龄,消毒剂残留量,温度和季节性因素相关联的BaCTT.
主要成果:
- BaCTT成功地确定了细菌生长的热点和时期,表明了潜在的生物不稳定性.
- 细菌生物质参数显示了与原水质量有关的季节性波动,与成品水的稳定性脱.
- BaCTT与水的年龄,消毒剂残留量,温度和季节性有显著的相关性,突出了遥远地点和一年晚些时候的不稳定性风险.
结论:
- BaCTT是一种新的,敏感的,可解释的参数,用于评估DWDS中的生物不稳定性潜力.
- 与生物质参数相比,BaCTT提供了优势,因为它反映了分布系统中与水质相关的动态过程.
- 需要进一步的研究来证实BaCTT在各种DWDS和操作条件中的普遍适用性.
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