Surfactant enhanced removal of PCE in a nominally two-dimensional, saturated, stratified porous medium

摘要

Although surfactant enhanced remediation of nonaqueous phase liquids(NAPLs)by pump- and-treat-technology has been studied extensively in the laboratory with one-dimensional columns, very few multi-dimensional investigations have been reported. In this study we focus on the removal of perchoroethylene(PCE)from a two-dimensional, saturated porous medium containing a low permeability sand layer situated in an otherwise high permeability sand. A PCE spill was applied at the surface of the porous medium and allowed to redistribute until static equilibrium was achieved.