초록 ▼

Apparatus for active in situ multi-element gas sparging for bioremediation or physico-chemical degradation 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 in

Apparatus for active in situ multi-element gas sparging for bioremediation or physico-chemical degradation 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.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for active in situ multi-element gas sparging for accelerated bioremediation or for removal of contaminants in a soil formation containing a subsurface groundwater aquifer, the multi-gas contained in bubbles, said apparatus comprising;a) a plurality of inject

[ What is claimed is:] [1.] An apparatus for active in situ multi-element gas sparging for accelerated bioremediation or for removal of contaminants in a soil formation containing a subsurface groundwater aquifer, the multi-gas contained in bubbles, said apparatus comprising;a) a plurality of injection wells each having casing means extending to a depth of a selected aquifer;b) means for providing an oxidizing agent;c) means for sizing bubbles;d) means for controlled mixing of ambient air with said oxidizing agent;e) means for controlled mixing of ambient air with said oxidizing agent comprising ozone to provide a multi-element gas;f) means for injecting said multi-element oxidizing gas in said aquifer having a structure that is capable of injecting gas without applying a vacuum, comprising a plurality of microporous diffusers, wherein said diffusers form micro-fine bubbles containing said multi-element gas that oxidizes in a gas/gas reaction, by stripping, chlorinated hydrocarbons from the aquifer; andg) agitation means (pulsing or surging) for intermittently agitating water in the well effective to alter the path of micro-fine bubbles through a porous 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 for gas/gas reaction is effective to increase the efficiency and speed of remediation of a site.