Fate and Transport of Contaminants in Aging Piping Systems

老化管道系统中污染物的归宿和迁移

• 批准号: 10596289
• 负责人: Kelly G Pennell
• 金额: $ 16.64万
• 依托单位: UNIVERSITY OF KENTUCKY
• 依托单位国家: 美国
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-04-07 至 2025-01-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10596289
• 关键词: Address; Aging; Air; Analytical Chemistry; Biological Monitoring; Biomedical Research; Calibration; California; Communication; Communities; Computer Models; Coupled; Data; Data Analyses; Deterioration; Ensure; Environment; Environmental Engineering technology; Environmental Exposure; Environmental Hazards; Environmental Health; Environmental Pollutants; Environmental Science; Equation; Ethylenes; Evidence based practice; Foundations; Fracture; Gases; Goals; Hazardous Waste; Health; Human; Individual; Indoor Air Quality; Industry; Infrastructure; Inhalation Exposure; Interview; Joints; Kentucky; Knowledge; Measurement; Measures; Membrane; Modeling; North Carolina; Outcome; Outcome Study; Pathway interactions; Policies; Poly-fluoroalkyl substances; Polymers; Public Health; Regulation; Reporting; Research; Research Project Grants; Risk; Risk Management; Risk Reduction; Route; Sampling; Science; Services; Site; Superfund; Surveys; System; Techniques; Temperature; Testing; Tetrachloroethylene; Time; Toxic effect; Transcend; Translational Research; Transport Process; Trichloroethylene; Uncertainty; United States; Volatilization; Water; Water Supply; aged; base; community engagement; contaminant transport; data interoperability; data management; data modeling; drinking; drinking water; engineering design; epidemiology study; field study; ground water; health literacy; hookah; indoor air; informant; mass flux; novel; nutrition; predictive modeling; pressure; prevent; research facility; sensor; sensor technology; stakeholder perspectives; superfund chemical; superfund site; tool; vapor intrusion; ventilation; water quality

PROJECT SUMMARY Millions of miles of water and sewer piping systems are currently buried across the United States. Near sites contaminated with hazardous wastes, pipe deterioration provides pathways for contaminant entry and transport to surrounding communities. One challenge of leaking sewer pipes near Superfund sites involves volatilization of contaminants that enter subsurface pipes, posing indoor inhalation exposure risks. In drinking water piping systems, pipe fractures coupled with pressure transients within the piping system allow subsurface contaminants to enter the system—especially at contaminated sites where such breaks become conduits impacting water quality. This project provides strategies to reduce and prevent exposure risks to environmental contaminants, especially chlorinated ethenes and per- and polyfluoroalkyl substances (PFAS) that result from leaking and damaged subsurface piping networks. The overarching project goal is to combine piping infrastructure science with fate and transport science to identify and reduce exposure risks associated with trichloroethene (TCE), tetrachloroethene (PCE), and PFAS. To achieve this goal, we propose three specific aims: 1) To measure mass flux of contaminants at field sites where TCE and PCE exposure risks are impacted by piping networks; evaluate flow and pressure field data from drinking water systems; and, determine the effect of broken or failed piping components and joints in lab settings 2) To develop models that: a) predict mass flux of contaminants to indoor air and evaluate exposure risks; b) predict mass flux of contaminants through piping networks; and, 3) To use stakeholder input and stochastic analyses to characterize model uncertainty and sensitivity in an effort to develop stakeholder-relevant solutions that reduce and prevent exposure risks. The specific aims integrate advanced computational modeling approaches with field measurements collected from piping systems in Eastern Kentucky and at a start-of-the-art vapor intrusion research facility near a Superfund site. Comparing data from different measurement techniques, including a novel sensor technology, provides information about temporal variability of sewer gas mass flux which is critical due to the high level of uncertainty that surrounds environmental exposure risks. The research team aims to bolster a paradigm shift in the way uncertain exposure risks are managed and develop solutions to reduce exposure risks in ways that are acceptable to communities. Risk communication science will inform strategies to evaluate uncertainty using stakeholder perspectives and evidence-based practices as a framework to promote solution-oriented research and environmental health literacy.

项目摘要 目前，美国遍布数百万英里的水和下水道管道系统。近地点 管道定义被危险废物污染，为污染物进入和运输提供了途径 到周围社区。超级基金站点附近下水道管道泄漏的一个挑战涉及挥发 进入地下管道的污染物，带来室内吸入风险。在饮用水管道中 系统，管道裂缝以及管道系统中的压力瞬变允许地下 进入系统的污染物，尤其是在被污染的地点变成导管的地方 影响水质。该项目提供了减少和防止暴露风险的策略 污染物，尤其是氯化乙烯和污染物，以及由氯氟烷基物质（PFA） 泄漏和损坏的地下管道网络。总体项目目标是结合管道 具有命运和运输科学的基础设施科学，以识别和降低与 三氯乙烯（TCE），四氯乙烯（PCE）和PFA。为了实现这一目标，我们提出了三个具体的 目的：1）在影响TCE和PCE风险的现场现场测量污染物的质量通量 通过管道网络；评估饮用水系统的流量和压力场数据；并确定 在实验室设置中，破碎或失败的管道组件和关节的影响2）开发模型：a）预测 污染物的质量通量室内空气并评估暴露风险； b）预测污染物的质量通量 通过管道网络； 3）使用利益相关者的输入和随机分析来表征模型 不确定性和敏感性，以开发与利益相关者相关的解决方案，以减少和防止 暴露风险。特定目的与字段集成了高级计算建模方法 从肯塔基州东部的管道系统和在开始蒸气中收集的测量值 超级基金站点附近的研究设施。比较来自不同测量技术的数据，包括 新型传感器技术提供有关下水道气体质量通量暂时变异的信息 由于周围环境暴露风险的高度不确定性，至关重要。研究团队 旨在增强不确定暴露风险的方式的范式转变，并为解决方案开发解决方案 以社区可接受的方式降低风险。风险传播科学将告知 利用利益相关者的观点和基于证据的实践评估不确定性的策略 促进面向解决方案的研究和环境健康素养的框架。