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，在美国附近，数百万英里的水和下水道系统被埋葬 管道恶化被危险废物污染，为进入和运输提供了途径 向周围的社区漏水的一个挑战 进入地下管道的污染物，在饮用水管道中冒充室内吸入风险。 系统，管道裂缝在管道系统内的压力横向型，允许地下 进入系统的污染物 - 尤其是在被污染的地点，这些破裂的喙变成管道 影响水质。 污染物，尤其是氯化乙ense，以及由氯氟烷基物质（PFA） 泄漏和损坏的地下管道网络。 具有命运和运输科学的基础设施科学，以识别和减少与 三氯乙烯（TCE），四氯乙烯（PCE）和PFA，我们提出了三个特定的特异性 目的：1）测量在TCE和PCE暴露风险的情况下，在现场污染物的质量通量 通过管道网络来评估饮用水系统的流量和压力 在实验室设置中，损坏或失败的载流组件和关节的影响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 通过管道网络和3）使用损失者输入和随机分析 不确定性和敏感性，以开发发展与利益相关者相关的解决方案，以减少和 曝光风险。 从肯塔基州东部的管道系统收集的测量以及在开始的蒸气中 超级基金站点附近的研究设施。 新颖的传感器技术，提供有关Sewick可变性的信息 由于高水平的不确定性，环境暴露的风险很高 旨在加强对不确定的外籍风险管理方式的范式转变，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。 使用股份股份股权股权持有者观点的做法来评估不确定性的策略作为一种 促进面向解决方案的研究和环境健康素养的框架。