POWRE: Combined Corrosion Assessment Techniques for Evaluating the Effect of Free Chlorine on Aged Cast Iron Water Distribution System Pipes

9870435米勒：向饮用水中添加游离氯等消毒剂会大大增加配水系统管道的腐蚀。根据拟议的地下水消毒规则，许多目前没有对饮用水进行消毒的小社区可能很快就需要这样做。预计突然加入一种强氧化剂，如游离氯，将导致这些小型供水系统中发现的老化铁管的额外腐蚀，但这一领域的水化学尚未得到很好的研究。在这个项目中，几种传统的和新的腐蚀评估技术将被应用到铁的腐蚀研究中。管道回路研究将与电化学分析和材料(垢)分析相结合，以更全面地了解给水系统的化学，包括垢的化学。预计该项目的成果将有助于水社区更好地实现氧化剂和管道结垢之间的相互作用。这一项目将使私人情报局在使用分析技术方面积累经验，这些技术传统上不用于研究老化管道的腐蚀。尤其是电化学分析工作，将扩大P.I.的研究能力，并使她能够从事未来涉及电化学的工作，以及该领域在环境工程中的应用。***

9870435 Miller The addition of disinfectants such as free chlorine to drinking water can greatly increase corrosion of the distribution system pipes. Many small communities which do not currently disinfect their drinking water may soon need to do so under the proposed Ground Water Disinfection Rule. It is anticipated that the sudden addition of a strong oxidant such as free chlorine will lead to additional corrosion of the aged iron pipes found in these small water systems, but this area of water chemistry has not been well studied. In this project, several traditional and newer corrosion assessment techniques will be applied to the study of iron corrosion. Pipe loop studies will be combined with electrochemical analysis and material (scale) analysis to give a more complete understanding of the chemistry of water distribution systems, including the chemistry of scales. It is anticipated that the results of this project will help the water community to better interactions between oxidants and pipe scale. This project will allow the P.I. to develop experience in the use of analytical techniques which have traditionally not been applied to the study of corrosion in aged pipes. The electrochemical analytical work, in particular, will expand the research capabilities of the P.I., and will allow her to do future work involving electrochemistry and the application of this field to Environmental Engineering. ***