Kharazmi University, Tehran, Iran.
, San Antonio, USA.
Environ Sci Pollut Res Int. 2019 Oct;26(28):28714-28724. doi: 10.1007/s11356-019-06052-7. Epub 2019 Aug 2.
Leakage of hydrocarbon fuel (light nonaqueous-phase liquid, LNAPL) from petroleum processing facilities and storage tanks may result in significant subsurface contamination. Remediating the contaminated areas represent considerable challenges, especially when remediation resources are limited and site data are incomplete. A reasonable management strategy under this scenario may be to identify sites where LNAPL recovery operations should be located that would provide the largest LNAPL recovery initially while minimizing the LNAPL remaining in the subsurface (entrapped and residual LNAPL), which may serve as future sources for groundwater contamination. To accomplish this objective, we use estimates of subsurface recoverable and total LNAPL specific volumes and LNAPL transmissivities to generate GIS maps that can be combined to highlight locations where to develop LNAPL recovery operations. When the approach is applied to a LNAPL-contaminated area in Iran, we were able to narrow the locations for potential LNAPL recovery operations. Specifically, we combine maps of the LNAPL specific yield, an introduced term, and the LNAPL transmissivity where the LNAPL specific yield is the ratio of the recoverable to total LNAPL specific volumes. The LNAPL specific yield is a relative measure of the amount of LNAPL that potentially can be recovered while minimizing residual LNAPL in soils. The approach can be applied to sites where the recoverable and total LNAPL specific volumes and LNAPL transmissivities can be estimated using data from boreholes in the contaminated area.
碳氢燃料（轻质非水相液体，LNAPL）从石油加工设施和储罐泄漏可能导致严重的地下污染。在补救资源有限且场地数据不完整的情况下，污染区域的修复代表着相当大的挑战。在这种情况下，一个合理的管理策略可能是确定应在哪里进行 LNAPL 回收作业的位置，这些位置最初将提供最大的 LNAPL 回收量，同时将地下（被困和残留的 LNAPL）中的 LNAPL 残留量降至最低，这些残留的 LNAPL 可能成为未来地下水污染的来源。为了实现这一目标，我们使用地下可回收和总 LNAPL 特定体积以及 LNAPL 渗透率的估计值来生成 GIS 地图，这些地图可以组合起来突出显示开发 LNAPL 回收作业的位置。当该方法应用于伊朗的 LNAPL 污染区域时，我们能够缩小潜在 LNAPL 回收作业的位置。具体来说，我们将特定 LNAPL 产率、引入的术语和 LNAPL 渗透率的地图结合起来，其中特定 LNAPL 产率是可回收 LNAPL 与总 LNAPL 特定体积的比值。特定 LNAPL 产率是一种相对测量方法，用于衡量在最小化土壤中残留 LNAPL 的情况下潜在可回收的 LNAPL 量。该方法适用于可以使用污染区域中的钻孔数据估计可回收和总 LNAPL 特定体积以及 LNAPL 渗透率的场地。
