RUI: An Evaluation of the Effectiveness of Air Sparging Techniques in Nonhomogeneous Natural Sediments.

该研究由密歇根大学迪尔伯恩分校自然科学系、霍普学院地质与环境科学系、密歇根大学安娜堡分校土木与环境工程系和密歇根州诺维市克莱顿环境顾问公司合作完成。该项目将调查“空气喷射”，这是一种修复被挥发性有机化合物污染的地下水和土壤的流行方法。修复效果在很大程度上取决于地下气流通道的位置和几何形状，而这又受场地条件（如粒度分布和地层非均质性）的控制。研究目标是：1 .定量和定性地确定在修复工业中成功使用空气喷射所必需的水文地质参数；2 .开发一个预测模型，以促进在适当地点使用空气喷射，而不需要进行昂贵和不确定的试点研究。这将通过实验室、计算机模拟和实地观察三方面的方法来完成。实验室观察将用于验证和修改多相流模型（MISER），该模型反过来将被校准到一个经过充分研究的现场。本科生将参与研究，项目结果和方法将被纳入霍普学院和密歇根大学的环境科学和工程课程。

9814833 MurrayThis research is collaboration between the Department of Natural Sciences at the University of Michigan-Dearborn, the Department of Geological and Environmental Sciences at Hope College, the Department of Civil and Environmental Engineering at the University of Michigan-Ann Arbor and Clayton Environmental Consultants, Inc. of Novi, Michigan. The project will investigate "air sparging", a popular method of remediating groundwater and soil contaminated with volatile organic compounds. Remediation effectiveness is largely determined by the location and geometry of subsurface airflow pathways, which in turn are controlled by site conditions, such as grain-size distribution and stratigraphic heterogeneity. The research goals are 1: To quantitatively and qualitatively define the hydrogeologic parameters necessary for the successful use of air sparging in the remediation industry, 2: To develop a predictive model to facilitate its use at appropriate sites without the need for expensive and inconclusive pilot studies. This will be accomplished by a tripartite approach of laboratory, computer modeling and field observation. Laboratory observations will be used to validate and modify a multiphase-flow model (MISER), which in turn will be calibrated to a well-studied field site. Undergraduate research students will participate, and project results and methodologies will be incorporated into environmental science and engineering curricula at Hope College and the University of Michigan.