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The effectiveness of household water treatment and safe storage in improving drinking water quality: a disinfection by-product (DBP) perspective
Journal of Water Supply: Research and Technology ( IF 4.3 ) Pub Date : 2020-12-01 , DOI: 10.2166/aqua.2020.052
Rong Xiao 1 , Youli Duan 2 , Wenhai Chu 1
Affiliation  

Serving as the last barrier to secure drinking water safety, household water treatment and safe storage (HWTS) is perceived as an interim measure for removing pathogens from drinking water and reducing disease risk. In recent years, the application of HWTS has shown a growing trend, and its performance in controlling chemicals has also received much attention. Disinfection by-products (DBPs) are formed by the reaction of chemical disinfectants and precursors, and are present at sub-μg·L−1 or low-to-mid-μg·L−1 levels in drinking water. Although precursor control and disinfection operation modification could contribute to DBP mitigation to some degree, DBP removal after their formation emerges as an important strategy due to the ubiquitous existence of DBPs in distribution systems and tap water. In order to figure out how DBP concentrations vary during the residence time of drinking water in households, this review summarizes the effectiveness and mechanism of HWTS and combination technologies for DBP control in municipal tap water, and makes a comparison with regard to technologies implementing different removal mechanisms as well as DBPs possessing different natures. Based on these results, this article provides an insight into DBP risk assessment and human health protection.



中文翻译:

家用水处理和安全存储在改善饮用水水质方面的有效性:消毒副产物(DBP)的观点

作为确保饮用水安全的最后障碍,家庭用水处理和安全存储(HWTS)被认为是从饮用水中去除病原体并降低疾病风险的临时措施。近年来,HWTS的应用呈增长趋势,其在化学药品控制中的性能也受到了广泛关注。消毒副产物(DBP)是由化学消毒剂和前体反应形成的,存在量低于μg·L -1或中低至μg·L -1饮用水中的水平。尽管前体控制和消毒操作的改进可以在一定程度上有助于减轻DBP,但由于DBP在分配系统和自来水中普遍存在,因此去除DBP形成后的去除已成为一种重要的策略。为了弄清DBP浓度在家庭饮用水中的停留时间如何变化,本综述总结了HWTS和组合技术对市政自来水中DBP控制的有效性和机理,并对实施不同去除方法的技术进行了比较。机制以及具有不同性质的DBP。基于这些结果,本文提供了对DBP风险评估和人类健康保护的深刻见解。

更新日期:2020-12-21
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