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首页> 外文期刊>Journal of water and health >Influence of container cleanliness, container disinfection with chlorine, and container handling on recontamination of water collected from a water kiosk in a Kenyan slum
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Influence of container cleanliness, container disinfection with chlorine, and container handling on recontamination of water collected from a water kiosk in a Kenyan slum

机译：容器清洁度，用氯消毒的容器以及容器处理对从肯尼亚贫民窟的水站收集的水进行再污染的影响

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The study assessed whether using clean containers that had been disinfected with chlorine at a water kiosk in the Kangemi slum in Nairobi reduced recontamination of treated water during drinking transport and storage. At the same time, the impacts of container handling and hygiene conditions at the household level on water quality changes during storage were evaluated. Data were collected during interviews with 135 households using either new, clean Maji Safi containers (MSCs) that had been disinfected with chlorine or normal uncleaned jerrycans (NJCs). Bacteriological water quality and free chlorine levels in both types of containers were measured after container filling at the kiosk and in the same containers after 24 h storage in households. The use of MSCs significantly reduced the risk of recontaminating the treated water. After water filling at the kiosk, none of the MSCs contained Escherichia coli bacteria, and 2.8% were contaminated after 24 h storage. In contrast, 6.2% of NJCs were contaminated after filling, and 15.2% after 24 h storage. Multivariate logistic regression indicated that the use of a clean water container and sufficient chlorine and the frequency of cleaning the container in the household mitigated recontamination. We suggest further investigation of water container designs that facilitate cleaning.
机译：该研究评估了在内罗毕Kangemi贫民窟的水站使用经过氯气消毒的干净容器是否能减少饮用水运输和储存过程中对被处理水的污染。同时，评估了容器级别和家庭卫生条件对存储过程中水质变化的影响。在与135个家庭进行的访谈中，使用经过氯气消毒的干净的新Maji Safi容器（MSC）或普通的未清洗的油罐（NJC）收集了数据。在自助服务亭中填充容器后以及在家庭中存放24小时后，在相同容器中测量两种容器中的细菌学水质和游离氯水平。 MSC的使用显着降低了重新处理处理过的水的风险。在自助服务亭中加水后，所有MSC均不含大肠杆菌，储存24小时后被污染的细菌为2.8％。相反，填充后被污染的NJC占6.2％，储存24小时后被污染的15.2％。多元逻辑回归分析表明，使用净水容器和足够的氯气以及在家庭中清洁容器的频率减轻了再污染。我们建议进一步研究有助于清洁的水容器设计。

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