In situ remediation of underground organic pollution
First Claim
1. Apparatus for in situ remediation of underground organic pollution, including an injection well extending to a subterranean injection site, means for supplying a reagent of hydrogen peroxide in water to the top of the well at a pressure substantially above ambient, for in situ reaction with organic pollutant, said reagent-supplying means including means for heating the reagent to a temperature substantially above ambient.
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Accused Products
Abstract
Heated hydrogen peroxide reagent under pressure is supplied to a well for underground remediation of pollution; the reaction with the pollutant is exothermic so that the high temperature of the reagent when injected is maintained as the reagent spreads. The remediation reaction is monitored by sensors, to regulate the supply of reagent and to shut off the supply automatically when the pollutant has been reduced to an acceptable level.
48 Citations
12 Claims
- 1. Apparatus for in situ remediation of underground organic pollution, including an injection well extending to a subterranean injection site, means for supplying a reagent of hydrogen peroxide in water to the top of the well at a pressure substantially above ambient, for in situ reaction with organic pollutant, said reagent-supplying means including means for heating the reagent to a temperature substantially above ambient.
- 6. A method of in situ remediation of underground organic pollution, including the step of heating a reagent of hydrogen peroxide in water to a temperature substantially above ambient, and supplying a flow of the heated reagent under pressure substantially above ambient to a well having a subterranean injection site for injection of the reagent into the subsoil and reaction with organic pollutant in situ.
- 11. A method of remediating soil containing organic pollutant, including the steps of injecting said remediation fluid into a subterranean treatment site, monitoring the chemical reaction between the injected fluid and the pollutant, and controlling the injection of the remediation fluid in dependence on the result of the monitoring step, and said remediation fluid is steam and aqueous hydrogen peroxide combined, and said monitoring step is performed by regulating the concentration of the hydrogen peroxide in said remediation fluid.
Specification