Patent ID: 6352387
Filing Date: 2002-03-05
Classification: B09C,E21B

Abstract:
A subterranean, recirculation-enhanced reagent delivery apparatus for treatment of organic contamination located below the ground surface, comprising:a riser adapted to be placed within a borehole, said riser including an upper and a lower fluid permeable riser section which are separated by a fluid impermeable riser section; means for injecting liquid and gaseous chemical reagents to cause said reagents to be mixed with groundwater entering one of said upper and lower permeable riser sections, dispersed from the other of said upper and lower permeable riser sections, and mixed within a region surrounding the borehole so that said reagents cause oxidation of organic contaminants in soil and groundwater surrounding the borehole, and wherein the chemical regents are selected from a group of aqueous solutions consisting of acids, metal salts, peroxides to initiate a Fenton Reation, potassium permanganate and solium permanganate, surfactants and ozone.