System and method for remediating contaminated soil and groundwater in situ
First Claim
1. A method for the in-situ removal or remediation of contaminants in a soil formation containing a subsurface groundwater aquifer, the method comprising the steps of:
- injecting a first oxidant into the aquifer at an injection point to create a volume of influence of the first oxidant in the aquifer thereby treating the contaminants contained within the volume of influence; and
injecting a compressed gas into the aquifer to increase the size of the volume of influence of the first oxidant.
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Abstract
A system and method for the in-situ removal or remediation of contaminants in a soil formation containing a subsurface groundwater aquifer, the method comprising the steps of: injecting a first oxidant into the aquifer at an injection point to create a volume of influence of the first oxidant in the aquifer thereby treating the contaminants contained within the volume of influence; and injecting a compressed gas into the aquifer to increase the size of the volume of influence of the first oxidant. The injection of the compressed gas into the aquifer can also force the groundwater in the aquifer away from the injection point into a surrounding area to transport the first oxidant into the surrounding area thereby extracting contaminants from soil adjacent to the surrounding area.
61 Citations
24 Claims
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1. A method for the in-situ removal or remediation of contaminants in a soil formation containing a subsurface groundwater aquifer, the method comprising the steps of:
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injecting a first oxidant into the aquifer at an injection point to create a volume of influence of the first oxidant in the aquifer thereby treating the contaminants contained within the volume of influence; and
injecting a compressed gas into the aquifer to increase the size of the volume of influence of the first oxidant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for the in-situ removal or remediation of contaminants in a soil formation containing a subsurface groundwater aquifer, wherein the contaminants are spread out by diffusion, movement of the groundwater, and other mechanisms to form a contaminant plume, the method comprising the steps of:
alternately injecting, in any order, a hydrogen peroxide solution, an ozone/oxygen mixture, and compressed gas into the aquifer at an injection point to treat the contaminants contained within the groundwater, wherein the injection of the compressed gas forces the groundwater away from the injection point into a saturated zone or smear zone of the contaminant plume thereby transporting the hydrogen peroxide solution and the ozone/oxygen mixture into the saturated zone or smear zone of the contaminant plume. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method for the in-situ removal or remediation of contaminants in a soil formation containing a subsurface groundwater aquifer, the method comprising the steps of:
intermittently introducing, individually and in any order, a first oxidant, a second oxidant, and compressed gas into the groundwater to treat the contaminants contained within the aquifer, wherein the introduction of each oxidant creates a volume of influence of each oxidant, wherein the introduction of the compressed gas increases the size of each volume of influence of each oxidant. - View Dependent Claims (24)
Specification