Enhanced Remediation of Heterogeneous Subsurface Systems

异构地下系统的强化修复

• 批准号: 7067254
• 负责人: Cass T Miller
• 金额: $ 31.38万
• 依托单位: UNIV OF NORTH CAROLINA CHAPEL HILL
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-04-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7067254
• 关键词: biotransformation; environmental transport; mathematical model; nonwater solvent; soil pollution; water pollution

The overall goal of this project is to advance effective and efficient remediation strategies for subsurface systems contaminated by dense non-aqueous phase liquids (DNAPLs), which are among the most common and most challenging of Superfund contaminants. The specific aims involve the evolution of fundamental scientific understanding and application of a promising class of dense-brine remediation technologies developed by the project leader's research group. The specific aims include the following: (1) to extend this class of technologies to new sets of hydrological and contaminant source conditions that are both common and challenging; (2) to evaluate the impact of remediation on exposure; and (3) to formulate, solve, and use improved models of these systems to help advance our understanding and application of these technologies. A combination of laboratory and modeling approaches will be used in this work. A wide range of experiments will be performed, from batch experiments to determine detailed phase behavior and physicochemical characteristics to experiments in heterogeneous three-dimensional flow cells intended to mimic the natural systems of concern. Mathematical modeling will be essential for advancing and testing our fundamental understanding, designing experiments and interpreting the results, predicting the effect of likely field conditions that cannot be evaluated directly in the laboratory, and advancing potentially more efficient strategies to be evaluated in the laboratory or field. This work is of significance because it deals with a mainstream issue of importance to Superfund?remediation of contaminated subsurface systems, addresses especially difficult and prevalent classes of contaminants, considers realistic systems, and will advance fundamental understanding. Outcomes that directly impact Superfund sites are expected, including field-scale use of the technologies developed in this project.

该项目的总体目标是推进受密集的非水相液体（DNAPL）污染的地下系统的有效和高效的补救策略，这些系统是超级基金污染物中最常见，最具挑战性的最具挑战性的。具体目的涉及基本科学理解和应用项目负责人研究小组开发的有前途的密度补救技术。具体目的包括以下内容：（1）将这类技术扩展到新的水文和污染物条件，这些源既常见又具有挑战性； （2）评估补救对暴露的影响； （3）制定，解决和使用改进的这些系统模型，以帮助我们推进我们对这些技术的理解和应用。这项工作将使用实验室和建模方法的组合。将进行广泛的实验，从批处理实验确定详细的相行为和理化特征到异质三维流动细胞的实验，旨在模仿自然关注的自然系统。数学建模对于推进和测试我们的基本理解，设计实验并解释结果至关重要，预测可能直接在实验室中无法评估的现场状况的效果，以及在实验室或领域中进行评估的潜在更有效的策略。这项工作具有重要意义，因为它涉及对超级基金重要的主流问题？修复受污染的地下系统，解决特别困难且普遍的污染物类别，考虑现实的系统，并将提高基本理解。预计直接影响超级基金站点的结果，包括对在 这个项目。