Potential impacts of changing supply-water quality on drinking water distribution: A review

WATER RESEARCH

卷:116

Review

Liu, Gang^1,2  Zhang, Ya³  Knibbe, Willem-Jan¹  Feng, Cuijie²  Liu, Wentso³  Medema, Gertjan^2,4  van der Meer, Walter^1,5 

[1] Oasen Drinkwater, POB 122, NL-2800 AC Gouda, Netherlands

[2] Delft Univ Technol, Fac Civil Engn & Geosci, Dept Water Management, Sanit Engn, POB 5048, NL-2600 GA Delft, Netherlands

[3] Univ Illinois, Dept Civil & Environm Engn, 205 N Mathews Ave, Urbana, IL 61801 USA

[4] KWR Watercycle Res Inst, POB 1072, NL-3430 BB Nieuwegein, Netherlands

[5] Univ Twente, Sci & Technol, POB 217, NL-7500 AE Enschede, Netherlands

关键词: Drinking water distribution;    Water quality switching;    Destabilization;    Transition effects;    Evaluation framework;   

DOI  :  10.1016/j.watres.2017.03.031

来源: Elsevier

【 摘 要 】

Driven by the development of water purification technologies and water quality regulations, the use of better source water and/or upgraded water treatment processes to improve drinking water quality have become common practices worldwide. However, even though these elements lead to improved water quality, the water quality may be impacted during its distribution through piped networks due to the processes such as pipe material release, biofilm formation and detachment, accumulation and resuspension of loose deposits. Irregular changes in supply-water quality may cause physiochemical and microbiological de-stabilization of pipe material, biofilms and loose deposits in the distribution system that have been established over decades and may harbor components that cause health or esthetical issues (brown water). Even though it is clearly relevant to customers' health (e.g., recent Flint water crisis), until now, switching of supply-water quality is done without any systematic evaluation. This article reviews the contaminants that develop in the water distribution system and their characteristics, as well as the possible transition effects during the switching of treated water quality by destabilization and the release of pipe material and contaminants into the water and the subsequent risks. At the end of this article, a framework is proposed for the evaluation of potential transition effects. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

Free