Method of decontaminating soils and/or residues in situ and ex situ combining horizontal radial flow technique and depolluting agents
First Claim
1. A system for conducting remediation of a body of contaminated flow-permeable matter, comprising:
- a set of mutually spaced apart flow-producing members for producing a remediation-effective flow in said body;
a multi-level set of sensors for measuring at least one parameter related to said remediation-effective flow, said sensors each lying in a generally vertical plane situated between two adjacent flow-producing members of said set substantially at equal horizontal distance from said two adjacent flow-producing members; and
means for controlling the remediation-effective flow into said body in relation to said at least one measured parameter.
4 Assignments
0 Petitions
Accused Products
Abstract
A process for in situ remediation of contaminated soils and/or residues is disclosed. This process takes advantage of a horizontal radial flow irrigating/draining system and sensors (8) located at midspacing between parallel conduit lines (5) to create an environment propitious to the action of decontaminating agents (plants, microorganisms, salts, acids, bases, buffers, enzymes, substrates, surfactants, etc.). For example, a water-saturated zone may be created, the level of water containing decontaminating agents is raised, maintained and/or lowered, which water-saturated encourage desorption or solubilization of soluble contaminants, by adjusting and controlling all the parameters of reaction (time, temperature, pH, oxygenation, etc.) The process is easily adaptably for many classes of contaminants, including volatile compounds and light non-aqueous phase liquids, by further installing supplementary sets of conduit lines and pumping means at adequate levels. The site may be remedied by alternating gaseous and liquid modes to optimize the conditions of reaction, which alternation is advantageously achieved in a multi-unit arrangement, one unit being in gaseous mode while another is in liquid mode.
28 Citations
29 Claims
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1. A system for conducting remediation of a body of contaminated flow-permeable matter, comprising:
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a set of mutually spaced apart flow-producing members for producing a remediation-effective flow in said body; a multi-level set of sensors for measuring at least one parameter related to said remediation-effective flow, said sensors each lying in a generally vertical plane situated between two adjacent flow-producing members of said set substantially at equal horizontal distance from said two adjacent flow-producing members; and means for controlling the remediation-effective flow into said body in relation to said at least one measured parameter. - View Dependent Claims (2)
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3. A system for conducting in situ remediation of a body of contaminated fluid-permeable matter, comprising:
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a subsurface conduit network comprising a plurality of laterally spaced apart, fluid-permeable conduit lines; flow producing means connected to the subsurface conduit network for producing a flow of at least one remediation-effective fluid into the body of contaminated fluid-permeable matter; a subsurface, multi-level set of sensors for measuring at least one fluid-related parameter, said sensors each lying in a generally vertical plane situated between two adjacent fluid-permeable conduit lines substantially at equal horizontal distance from said two adjacent fluid-permeable conduit lines; and means for controlling the flow of said at least one remediation-effective fluid into said body in relation to said at least one measured parameter. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A process for conducting remediation of a body of contaminated flow-permeable matter, comprising the steps of:
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producing a remediation-effective flow in said body through a set of mutually spaced apart flow-producing members; measuring at least one parameter related to said remediation-effective flow at a plurality of different sensing levels comprising sensors, with each sensor lying in a generally vertical plane situated between two adjacent flow-producing members of said set substantially at equal horizontal distance from said two adjacent flow-producing members; and controlling the remediation-effective flow into said body in relation to said at least one measured parameter.
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19. A process for conducting in situ remediation of a body of contaminated fluid-permeable matter, comprising the steps of:
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installing a subsurface conduit network comprising a plurality of laterally spaced apart, fluid-permeable conduit lines; producing a flow of at least one remediation-effective fluid into the body of contaminated fluid-permeable matter through the subsurface conduit network; measuring at least one fluid-related parameter at a plurality of different sensing levels comprising sensors, with each sensor lying in a generally vertical plane situated between two adjacent fluid-permeable conduit lines substantially at equal horizontal distance from said two adjacent fluid-permeable conduit lines; and controlling the flow of said at least one remediation-effective fluid into said body in relation to said at least one measured parameter. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification