埃及的商业反透点使用系统未能净化自来水
Mahmoud Gad1, Mohamed A Marouf2, Amr Abogabal3
1Environmental Parasitology Laboratory, Water Pollution Research Department, National Research Centre, Giza 12622, Egypt
Journal of water and health
|June 1, 2024
概括
反透点使用系统减少溶解的固体,但无法改善细菌水平,并可能增加大肠杆菌. 由于水质不合规,这些系统对公共卫生构成风险.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 分析水质 分析水质
背景情况:
- 由于水质问题,基础设施老化和城市化,全球越来越依赖使用点 (PoU) 水系统.
- 对PoU系统,特别是反透 (RO) 系统的有限综合评估,在像埃及这样的地区,它们被广泛采用.
研究的目的:
- 进行对10个反透 (RO) 使用点 (PoU) 水过系统的彻底评估.
- 从这些系统中评估自来水 (入口) 和过水 (出口) 的物理化学,细菌学和原生动物学质量.
主要方法:
- 使用水和废水检查标准方法对10个RO PoU系统进行分析.
- 评估物理化学参数 (例如,总溶解固体,氨).
- 对大肠杆菌等指标进行细菌学检测,对阿坎萨摩巴和纳格莱里亚等生物进行原生动物学分析.
主要成果:
- 在大多数系统中观察到总溶解固体 (TDS) 的显著减少 (例如,PoU-10从210 mg/L降至21 mg/L).
- 细菌指标没有显著改善;一些系统显示过水中的大肠杆菌水平增加.
- 确定了阿坎萨摩巴 (42.5%) 的流行率和纳格莱里亚和维尔马摩巴形虫的存在,包括潜在的致病性阿坎萨摩巴基因型.
结论:
- 过水中的高细菌指标和必需矿物质的去除表明不符合水质标准.
- 这些发现表明,与使用这些RO PoU系统相关的潜在公共卫生问题.
- 进一步的研究对于了解通过这些系统过的饮用水对健康的长期影响至关重要.
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