Oxidative particle mixtures for groundwater treatment
First Claim
1. A method for the treatment of contaminants within soil and groundwater comprising the steps of:
- providing at least one inorganic oxidative chemical ina granular form;
adding a carrier fluid to said oxidative chemical, saidcarrier fluid further comprising a fine grainedinorganic hydrophilic material;
mixing said oxidative chemical with said carrier fluid, thereby providing a mixture;
injecting said mixture into an injection zone in the subsurface area;
dissolving said granular form of said at least one inorganic oxidative chemical in the subsurface area;
generating a plurality of oxidative ions from said dissolving step;
dispersing passively said plurality of oxidative ions;
reacting said contaminants with said plurality of oxidative ions.
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Accused Products
Abstract
The invention is a method and a composition of a mixture for degradation and immobilization of contaminants in soil and groundwater. The oxidative particle mixture and method includes providing a material having a minimal volume of free water, mixing at least one inorganic oxidative chemical in a granular form with a carrier fluid containing a fine grained inorganic hydrophilic compound and injecting the resulting mixture into the subsurface. The granular form of the inorganic oxidative chemical dissolves within the areas of injection, and the oxidative ions move by diffusion and/or advection, therefore extending the treatment zone over a wider area than the injection area. The organic contaminants in the soil and groundwater are degraded by the oxidative ions, which form solid byproducts that can sorb significant amounts of inorganic contaminants, metals, and radionuclides for in situ treatment and immobilization of contaminants. The method and composition of the oxidative particle mixture for long-term treatment and immobilization of contaminants in soil and groundwater provides for a reduction in toxicity of contaminants in a subsurface area of contamination without the need for continued injection of treatment material, or for movement of the contaminants, or without the need for continuous pumping of groundwater through the treatment zone, or removal of groundwater from the subsurface area of contamination.
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Citations
22 Claims
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1. A method for the treatment of contaminants within soil and groundwater comprising the steps of:
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providing at least one inorganic oxidative chemical in a granular form; adding a carrier fluid to said oxidative chemical, said carrier fluid further comprising a fine grained inorganic hydrophilic material; mixing said oxidative chemical with said carrier fluid, thereby providing a mixture; injecting said mixture into an injection zone in the subsurface area; dissolving said granular form of said at least one inorganic oxidative chemical in the subsurface area; generating a plurality of oxidative ions from said dissolving step; dispersing passively said plurality of oxidative ions; reacting said contaminants with said plurality of oxidative ions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for treatment and immobilization of contaminants within soil and water comprising the steps of:
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providing at least one inorganic oxidative chemical having a granular form; adding a carrier fluid to said oxidative chemical, said carrier fluid further comprising a fine-grained inorganic hydrophilic material; mixing said oxidative chemical with said carrier fluid, thereby providing a thixotropic mixture; injecting said mixture into the subsurface; dissolving said at least one inorganic oxidative chemical into said soil and water; generating a plurality of oxidative ions from said oxidative chemical; passively moving said plurality of oxidative ions toward said contaminants without the movement of water; reacting organic members of said contaminants with said plurality of oxidative ions; and forming a plurality of solid reaction by-products from said reacting step, said plurality of solid by-products remaining within said soil and groundwater. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of treating excavated soil and groundwater comprising:
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providing at least one inorganic oxidative chemical having a granular form; adding a carrier fluid to said oxidative chemical, said carrier fluid further comprising a fine-grained inorganic hydrophilic material; mixing said oxidative chemical with said carrier fluid, thereby providing a thixotropic mixture; injecting said mixture into the excavated soil; dissolving said at least one inorganic oxidative chemical into said soil and water; generating a plurality of oxidative ions from said oxidative chemical; reacting organic members of said contaminants with said plurality of oxidative ions; and forming a plurality of solid reaction by-products from said reacting step, said plurality of solid by-products remaining within said soil and groundwater.
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Specification