...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental geology and water sciences >Analytical closed-form solutions for assessing pumping cycles, times, and costs required for NAPL remediation
【24h】

Analytical closed-form solutions for assessing pumping cycles, times, and costs required for NAPL remediation

机译：封闭式分析解决方案，用于评估NAPL修复所需的泵送周期，时间和成本

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An analytical solution is given to evaluate the number and duration of pumping cycles required for the remediation by pumping of contaminants, both single component and multi-component non-aqueous phase liquids (NAPLs), when no free product is present in the system. The method can be applied in a homogenous medium if the contamination zones have been delineated and residual total NAPL concentrations assessed. Based on the principle of the NAPL partitioning in unsaturated or saturated porous media, analytical closed-form solutions are provided for both cases of remediation by pumping in saturated and unsaturated conditions: "pump-and-treat" and "soil vapor extraction". In each case we determine the number of pumping cycles required to reach the residual required concentration of NAPL (for example, according to health-based standards), considering one or more chemicals simultaneously present in an aquifer. The method requires information on the aquifer saturation state and the properties of the chemicals of interest. Calculations are based on the assumption of equilibrium partitioning of chemicals between the pore water, the soil solids, and the soil gas (in the case of unsaturated conditions), and no presence of a NAPL phase.
机译：当系统中不存在游离产物时，给出一种分析解决方案，以评估通过泵送污染物（单组分和多组分非水相液体（NAPLs））进行补救所需的泵送循环的次数和持续时间。如果已经划定了污染区并评估了残留的总NAPL浓度，则该方法可用于均质介质中。根据NAPL在不饱和或饱和多孔介质中分配的原理，针对在饱和和不饱和条件下泵送的两种补救情况提供了分析性封闭形式的解决方案：“泵送处理”和“土壤蒸汽提取”。在每种情况下，考虑到含水层中同时存在的一种或多种化学物质，我们确定达到剩余的NAPL所需浓度所需的泵送次数（例如，根据健康标准）。该方法需要有关含水层饱和状态和所关注化学物质特性的信息。计算基于孔隙水，土壤固体和土壤气体（在非饱和条件下）之间化学物质平衡分配的假设，并且不存在NAPL相。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号