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

在饮用水中加入游离氯等消毒剂会大大增加分配系统管道的腐蚀。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应用于铁腐蚀的研究。管道回路研究将与电化学分析和材料（水垢）分析相结合，以更全面地了解配水系统的化学成分，包括水垢的化学成分。预计该项目的研究结果将有助于水界更好地了解氧化剂与管道结垢之间的相互作用。该项目将使私家侦探在使用分析技术方面积累经验，这些技术传统上没有应用于研究老化管道的腐蚀。特别是电化学分析工作，将扩展p.i.的研究能力，并将使她能够从事涉及电化学和该领域在环境工程中的应用的未来工作。* * *

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. ***