微生物和病原体源追踪工具箱的应用,以确定雨水排水网络的基础设施问题:一个案例研究
Liam R Carson1, Clint Goodman2, Bert van Duin3
1School of Public Health, University of Alberta, Edmonton, Alberta, Canada.
Microbiology spectrum
|August 7, 2024
概括
人类的污水经常污染城市的雨水,造成健康风险. 一个微生物工具箱的方法确定了污水交叉连接作为一个关键来源,使得有针对性的整治更安全的再利用水.
科学领域:
- 环境微生物学环境微生物学
- 城市水文学
- 评估水质水质的评估.
背景情况:
- 城市化和水资源短缺的增加迫使人们探索诸如雨水之类的替代水源.
- 雨水,即使在单独的系统中,也经常被人类便污染,造成公共卫生风险.
- 识别排水网络中人类便污染的具体来源是一项挑战.
研究的目的:
- 通过全面的工具箱方法,调查城市雨水中的微生物污染.
- 确定雨水中人类便污染和相关病原体的流行率.
- 在市政排水网内确定人类便污染的来源.
主要方法:
- 使用微生物源追踪 (MST) 使用人类便标志物HF183.3.
- 进行便指标细菌 (FIB) 监测.
- 进行了细菌病原体监测,包括Arcobacter butzleri.
- 采用痕迹染料来确认已识别的污染源.
主要成果:
- 在50%以上的常规雨水样本中检测到人类污水污染.
- 病原体Arcobacter butzleri在50%以上的样本中被发现,经常与人类标记物同时发生.
- MST和FIB的分析成功地将污染追溯到已确认的污水交叉连接.
- 检测到的污染水平往往超过了微生物水质标准.
结论:
- 人类污水是城市雨水中无处不在的污染物.
- 微生物工具箱方法有效地识别了人类造成的便污染源.
- 该研究确定并证实了污水交叉连接,为市政当局提供了解决基础设施问题的模型.
- 调查结果支持需要进行强有力的监测,以减轻与雨水再利用相关的风险.
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