Patent ID: 7129388
Filing Date: 2006-10-31
Classification: B09C

Abstract:
1. A method for accelerated anaerobic dechlorination of subsoil matter, comprising: placing an injection rod into a soil to be treated to carry injectants under pressure to the soil; injecting a soil fracturizing gas under pressure through said injection rod and into said soil to establish fluid pathways therein; injecting a reducing agent under pressure through said rod and said soil pathways to remove oxygen from groundwater and soil moisture; injecting a mixture under pressure including zero valent iron through said rod and into said soil pathways to react with the dissolved chlorinated solvents in the groundwater; and injecting a polylactate ester mixture under pressure through said rod into the soil pathway to produce dechlorinating conditions such that indigenous anaerobic bacteria biodegrade residual concentrations of chlorinated solvents.