Liquid purification or separation – Processes – Including geographic feature
Patent
1998-12-24
2000-07-04
Simmons, David A.
Liquid purification or separation
Processes
Including geographic feature
210752, 210760, 210170, 210192, 210908, 405128, C02F 178
Patent
active
060834072
ABSTRACT:
Apparatus for active in situ multi-element gas sparging for bioremediation or physico-chemical degration for removal of contaminants in a soil formation containing a subsurface groundwater aquifer or a substantially wet unsaturated zone, the multi-gas contained in bubbles, wherein the apparatus includes a plurality of injection wells extending to a depth of a selected aquifer; introducing an oxidizing agent comprising ozone mixed with ambient air to provide a multi-element gas by means of microporous diffusers, without applying a vacuum for extraction of stripped products or biodegration by-products, wherein said diffusers form micro-fine bubbles containing said multi-element gas that oxidizes, by stripping and decomposition, chlorinated hydrocarbons from the aquifer and surrounding saturated soil formation into harmless by-products; also including a pump for agitating water in the well selecting microbubbles, injecting them into the aquifer and effective to alter the path of micro-fine bubbles through a porous solid formation whereby enhanced contact between the oxidizing agent contained in each said bubble by stripping pollutant from solution in ambient water into the mini-atmosphere of each bubble effective to increase the efficiency and speed of remediation of a site.
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"Hydrocarbon Contaminated Soils", E.J. Calabrese et al., Lewis Publishers, vol. 111, 1993, pp. 520-528.
"A Simple Test to Determine the Bubbling Radius and Bubble Conductivity of an Aquifer", Technical Publication #93, KVA Analytical Systems, pp. 1-14.
Morrison Betsey J.
Simmons David A.
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