Real world soil-NAPL wettability: Tools for site assessment and implications for site remediation

联邦、省和市政府以及行业在清理我们的布朗菲尔德（土壤和地下水污染的废弃物业）方面有着既得利益。其中许多网站是黄金真实的房地产网站位于高密度地区。清理这些场地不仅可以保护环境，还可以为所有相关利益攸关方带来可观的收入。许多这些网站的非水相液体（NAPLs），如汽油，石油，取暖燃料，工业溶剂，煤焦油等的影响，在预测这些NAPLs在地面以下的运动和分布，并在制定这些网站的修复策略，研究人员和工程师往往假设水优先润湿地下土壤和非水相液体是非润湿流体。土壤的润湿性影响非水溶性液体在地下的流动性和分布，这反过来又会影响用于现场修复的修复技术的有效性。在环境修复领域，许多研究人员和实践者未能解决这样一个事实，即这些土壤中的许多土壤可能或变得部分润湿NAPL，这显著影响了NAPL在孔隙尺度上的分布和不同修复技术的有效性。本研究的重点是发展一个更好的了解流动性和分布的非水相液体在中等湿和非水相液体湿土壤，并提出修复策略，更适合于非水相液体影响的布朗菲尔德网站与中等湿和非水相液体湿土壤。加拿大是一个

Federal, provincial and municipal governments as well as industry have a vested interest in cleaning up our brownfield sites (abandoned properties with soil and groundwater contamination). Many of these sites are prime real estate sites located in high density areas. Cleaning up these sites not only protects the environment but will generate significant revenues for all stakeholders involved. Many of these sites are impacted by non-aqueous phase liquids (NAPLs) such as gasoline, oil, heating fuel, industrial solvents, coal tars, etc. In predicting the movement and distribution of these NAPLs below the ground surface and in developing remediation strategies for these sites, researchers and engineers often assume that water preferentially wets subsurface soils and NAPL is the non-wetting fluid. The wettability of soils impacts the mobility and distribution of NAPL in the subsurface, which in turn impacts the effectiveness of remediation technologies employed for site remediation. In the environmental remediation field, many researchers and practitioners have failed to address the fact that many of these soils may be or become partially wetting to the NAPL, which significantly impacts the NAPL distribution at the pore scale and the effectiveness of different remediation technologies. The focus of this study is to develop a better understanding of the mobility and distribution of NAPL in intermediate-wet and NAPL-wet soils and to propose remediation strategies that are more appropriate for NAPL-impacted brownfield sites with intermediate-wet and NAPL-wet soils. Canada is home to an