STUDY ON THE BEHAVIOR OF INJECTED AIR FOR AIR SPARGING IN NON-UNIFORM FIELDS

Abstract

 In this study, the behavior of pore air during air injection in isotropic and laminar anisotropic non-uniform media was investigated by using two-phase flow analysis and a self-similar spatial distribution model. The results showed that the range of influence of the injected air was similar to the homogeneous field in the isotropic non-uniform field, but in the layered anisotropic non-uniform field, the range of influence in the horizontal direction varied greatly depending on the permeability distribution, and there was a possibility that the recovery of contaminated air in the unsaturated zone would be insufficient. In addition, the tendency is stronger as the permeability of the ground increases.