Dissolution and Droplet Formation From A Surface Slick in Riverine Environments

河流环境中表面浮油的溶解和液滴形成

• 批准号: 9522171
• 负责人: John Gulliver
• 金额: $ 23.75万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-03-01 至 1999-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9522171&HistoricalAwards=false
• 关键词: Dissolution; Droplet; Formation; Surface; Slick

9522171 Gulliver The objective of this project is to conduct experimental investigation of the dissolution and droplet formation processes in riverine environments as a step toward formulation of better mathematical models than are currently available for use in prediction of the transport and fate of slightly water-soluble pollutants of surface waters. The experiments will be performed in a moving-bed flume that was specifically designed for conduct of interfacial transfer experiments. The flume simulates conditions in flowing streams that affect dissolution, rate of droplet formation and the equilibrium concentration of the target pollutant in the polluted water. Spills of slightly soluble liquids on surface waters result in the formation of surface slicks that move in the direction the water is flowing while dissolving, evaporating and forming droplets in the flowing water. Environmental issues associated with spills of these liquids relate to the transport properties of the spilled liquid and the characteristics of the bed over which the liquid flows. Results of this research are expected to improve the engineering design of mitigation measures that can be applied to reduce the pollutional impact of these pollutants on the quality of surface water supplies in preparation for their intended use.

9522171格列佛这个项目的目标是对河流环境中的溶解和水滴形成过程进行实验研究，以期制定出比目前可用于预测地表水中微水污染物的迁移和去向的更好的数学模型。实验将在移动床水槽中进行，该移动床水槽是专门为进行界面传递实验而设计的。该水槽模拟流动溪流中影响溶解、液滴形成速度和目标污染物在受污染水中的平衡浓度的条件。微溶液体在水面上的溢出会导致表面浮层的形成，这些浮层在流动的水中溶解、蒸发并形成水滴时，会沿着水的流动方向移动。与这些液体溢出有关的环境问题涉及到溢出液体的运输性质和液体流过的床层的特性。这项研究的结果可望改进缓解措施的工程设计，以减少这些污染物对地表水供应质量的污染影响，为其预期用途做好准备。