RAPID GOALI: Chemical Contamination and Remediation of Plastic Drinking Water Infrastructure during the West Virginia American Water Drinking Contamination Incident

快速目标：西弗吉尼亚州美国饮用水污染事件期间塑料饮用水基础设施的化学污染和修复

• 批准号: 1522955
• 负责人: Andrew Whelton
• 金额: $ 4.44万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-30 至 2015-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1522955&HistoricalAwards=false
• 关键词: RAPID; GOALI; Chemical; Contamination; Remediation

Whelton1424627An accidental spill of a currently unknown quantity (estimated between 3,000 and 7,500 gallons) of 4-methylcyclohexane methanol from a coal preparation plant in Charleston, WV has compromised the drinking water supply for up to 300,000 water users in Charleston and nearby counties. This tragedy has caused the ban of use of potable water and has resulted in closure in several establishments including schools and business. President Obama issued a federal disaster declaration for the state on Friday, January 10, 2014 to provide federal aid for the state. Utility and government responders do not have the information needed to determine the extent of plastic pipe contamination and their ability to be decontaminated by clean water flushing. It is well known that plastic drinking water pipes are particularly susceptible to chemical permeation.This project will explore the processes that control contaminant fate with plastic polyvinylchloride (PVC), high-density polyethylene (HDPE), and cross-linked polyethylene (PEX) pipes and contaminant desorption during flushing activities. These materials are also used in ice makers, refrigerators, and dishwashers. This project team will:(1) Investigate premise plumbing system drinking water quality,(2) Determine the role of contaminant concentration, pipe material type, and diameter on observed chemical concentration during stagnation,(3) Quantify diffusivity and solubility values for several organic contaminants and pipe materials,(4) Determine significant relationships between chemical fate, physiochemical properties, and plastic pipe properties, and(5) Elucidate the ability of flushing activities to remediate contaminated plastic pipes. The results of the project will be:(1) incorporated several in-class drinking water contamination investigation activities that require them to go through the same fact finding processes as the emergency responders, utility staff, and homeowners;(2) Presented results at an AWWA National conference to the drinking water utility and regulatory industry; and (3) Submitted a research paper to an environmental science and engineering focused journal.One of the larger gaps in our scientific understanding of the effect of chemical spill of 4-methylcyclohexanemethanol (MCHM), in the drinking water treatment plant and hence the potential risk to consumers, is the "solubility" of the chemical in plastic pipes or is adsorption to pipes, tanks and infrastructure in a treatment plant. Then, once ad- or absorbed, how long will it take to be released into the water as time progresses. These information will then be evaluated in the overall long-term effect of the spill.

Whelton1424627AN意外溢出了目前未知数量（估计在3,000至7,500加仑）的4-甲基环己烷甲醇中，来自查尔斯顿的一家煤炭准备厂，损害了查尔斯顿和附近县的饮用水供应多达300,000个水的饮用水供应。这场悲剧导致禁止使用饮用水，并导致包括学校和商业在内的多个机构关闭。奥巴马总统于2014年1月10日（星期五）向该州发表了联邦灾难宣言，为该州提供了联邦援助。公用事业和政府响应者没有确定塑料管污染程度及其被清洁水冲洗污染的能力所需的信息。众所周知，塑料饮用水管特别容易受到化学渗透的影响。该项目将探索控制用塑料聚氯乙烯（PVC），高密度聚乙烯（HDPE）和交联的聚乙烯（PEX）管道（PEX）管道（PEX）管道和污染物欲望的过程。这些材料也用于制冰机，冰箱和洗碗机中。该项目团队将：（1）研究前提管道系统饮用水质量，（2）确定污染物浓度，管道材料类型和直径在停滞期间观察到的化学浓度中的作用，（（3）定量扩散性和溶解度值对几种有机污染物和管道材料的较大关系，（4）确定化学物质和物理化属性的显着关系（4）补充受污染的塑料管。该项目的结果将是：（1）纳入了几个课堂饮用水污染调查活动，这些调查活动要求他们与紧急响应者，公用事业人员和房主进行相同的事实查找过程；（2）在AWWA国家会议上向饮用水公用事业和监管行业举行的AWWA全国会议上提出了结果； （3）向以环境科学和工程为重点的期刊提交了一份研究论文。我们对饮用水处理厂中4-甲基甲基甲苯甲醇（MCHM）化学溢出作用的科学理解的较大差距，因此对消费者的潜在风险是“塑料管道中的化学物质溶解度”的潜在风险。 然后，一旦吸收或吸收，随着时间的流逝，将需要多长时间释放到水中。 然后，这些信息将在溢出的总体长期效果中进行评估。