State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
J Environ Sci (China). 2022 Jul;117:173-189. doi: 10.1016/j.jes.2022.04.024. Epub 2022 May 2.
The qualified finished water from water treatment plants (WTPs) may become discolored and deteriorated during transportation in drinking water distribution systems (DWDSs), which affected tap water quality seriously. This water stability problem often occurs due to pipe corrosion and the destabilization of corrosion scales. This paper provides a comprehensive review of pipe corrosion in DWDSs, including corrosion process, corrosion scale formation, influencing factors and monitoring technologies utilized in DWDSs. In terms of corrosion process, corrosion occurrence, development mechanisms, currently applied assays, and indices used to determine the corrosion possibility are summarized, as well as the chemical and bacterial influences. In terms of scale formation, explanations for the nature of corrosion and scale formation mechanisms are discussed and its typical multilayered structure is illustrated. Furthermore, the influences of water quality and microbial activity on scale transformation are comprehensively discussed. Corrosion-related bacteria at the genus level and their associated corrosion mechanism are also summarized. This review helps deepen the current understanding of pipe corrosion and scale formation in DWDSs, providing guidance for water supply utilities to ensure effective measures to maintain water quality stability and guarantee drinking water safety.
从水处 理厂（WTP）出来的合格的成品水在饮用水分配系统（DWDS）中输送过程中可能会变 色和恶化，这会严重影响自来水水质。由于管道腐蚀和腐蚀层的不稳定性，经常会出现这种水稳 定问题。本文对 DWDS 中的管道腐蚀进行了全面综述，包括腐蚀过程、腐蚀层形成、影响因素以及 DWDS 中使用的监测技术。在腐蚀过程方面，总结了腐蚀的发生、发展机制、目前应用的检测方法和指 标，以及化学和细菌的影响。在结垢方面，讨论了腐蚀和结垢形成机制的本质，并说明了其典型的多 层结构。此外，还全面讨论了水质和微生物活性对结垢转化的影响。还总结了属级别的腐蚀相关细 菌及其相关的腐蚀机制。这篇综述有助于深化当前对 DWDS 中管道腐蚀和结垢形成的理解，为供水 公司提供指导，以确保采取有效措施维持水质稳定性，保证饮用水安全。
