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

POWRE：用于评估游离氯对老化铸铁配水系统管道影响的综合腐蚀评估技术

• 批准号: 9870435
• 负责人: Jennifer Miller
• 金额: $ 6.76万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-08-01 至 2001-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9870435&HistoricalAwards=false
• 关键词: POWRE; Combined; Corrosion; Assessment; Techniques

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. ***

9870435米勒在饮用水中添加游离氯等消毒剂会大大增加分配系统管道的腐蚀。 许多目前没有对饮用水进行消毒的小社区可能很快需要根据拟议的地下水消毒规则进行消毒。 预计突然加入强氧化剂（如游离氯）将导致这些小型水系统中的老化铁管发生额外腐蚀，但水化学的这一领域尚未得到充分研究。 在本项目中，几种传统的和较新的腐蚀评估技术将被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性质，包括水垢的化学性质。 预计该项目的结果将有助于水社区更好地了解氧化剂和管道垢之间的相互作用。 该项目将允许P.I.在使用分析技术方面积累经验，这些技术传统上不适用于老化管道的腐蚀研究。 特别是电化学分析工作将扩大PI的研究能力，并将允许她做未来的工作，涉及电化学和应用这一领域的环境工程。 ***