Class 405/128.35 - With heat

Subclass of Class 405 - Hydraulic and earth engineering
Definition: Subject matter wherein the temperature of the soil is
No. of patents: 22
Last issue date: 11/27/2007

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Number	Title	Issue Date
7290959	Electrode heating with remediation agent A remediation method and system is disclosed. A plurality of conductors is installed into the subsurface to introduce electrical current to produce heat in the subsurface. One or more agents are released into the subsurface to cause or accelerate the decomposition o...	11/06/2007
7004678	Soil remediation with heated soil Methods are provided for remediating contaminated soil. The methods may include collecting contaminated soil at a plurality of treatment sites. The contaminated soil at one or more of the plurality of treatment sites may be at least partially contained. The method m...	02/28/2006
6979150	In-situ containment and extraction of volatile soil contaminants The invention relates to a novel approach to containing and removing toxic waste from a subsurface environment. More specifically the present invention relates to a system for containing and removing volatile toxic chemicals from a subsurface environment using diffe...	12/27/2005
6962466	Soil remediation of mercury contamination An in situ soil remediation system may be used to remove or reduce levels of mercury contamination within soil. The soil remediation system may also remove or reduce levels of other contaminants within the soil. Mercury may be vaporized within the soil by a heating ...	11/08/2005
6881009	Remediation of soil piles using central equipment Methods are provided for remediating contaminated soil. The methods may include collecting contaminated soil at a plurality of treatment sites. The contaminated soil at one or more of the plurality of treatment sites may be at least partially contained. Contaminated...	04/19/2005
6485232	Low cost, self regulating heater for use in an in situ thermal desorption soil remediation system An in situ thermal desorption soil remediation system may be used to remove contamination from soil. Heat may be applied to the soil by metallic strip heaters that have large cross sectional areas as compared to conventional heater elements. The strip hea...	11/26/2002
6413016	Methods of extracting liquid hydrocardon contaminants from underground zones Methods of extracting liquid hydrocarbon contaminants from underground zones are provided. The methods are basically comprised of the steps of introducing a hot purge gas into an underground zone containing a pool of liquid hydrocarbon contaminants whereb...	07/02/2002
5975799	Electro-osmotic infusion for joule heating soil remediation techniques Electro-osmotic infusion of ground water or chemically tailored electrolyte is used to enhance, maintain, or recondition electrical conductivity for the joule heating remediation technique. Induced flows can be used to infuse electrolyte with enhanced ion...	11/02/1999
5615974	Process for soil decontamination by oxidation and vacuum extraction A process for in situ treatment of a contaminated subsurface zone of the earth containing volatile liquid or semisolid organic contaminants, semivolatile liquid or semisolid organic contaminants and/or nonvolatile organic contaminants in liquid, semisolid...	04/01/1997
5449251	Dynamic underground stripping: steam and electric heating for in situ decontamination of soils and groundwater A dynamic underground stripping process removes localized underground volatile organic compounds from heterogeneous soils and rock in a relatively short time. This method uses steam injection and electrical resistance heating to heat the contaminated unde...	09/12/1995
5348422	Methods for the formation and operation of an in situ process reactor A hazardous waste site remediation process for decontamination of petrochemical and other toxic waste containing sites comprises in situ conversion of the site to a self contained process reactor which is then selectively operated by feeding a variety of ...	09/20/1994
5325795	Mobile material decontamination apparatus A technique for decontaminating material, including disposing a grid network of perforated pipes on a base, and covering the same with contaminated soil. A barrier layer is laid on the contaminated material and provided with a vent port coupled to a vapor...	07/05/1994
5279740	Ground contamination remediation process Disclosed is a process for improved removal of contaminants including oily wastes and other organic hydrocarbonaceous materials from ground waters and areas adjacent to or in the vicinity of ground water locations. Ground and ground water contamination du...	01/18/1994
5249888	Enhanced gradient soil and groundwater remediation method An enhanced pressure gradient remediation system (10) for decontaminating a contaminated volume of soil incorporates at least one extraction well (40) operated independently or in conjunction with at least one injection well (12). The injection well (12) ...	10/05/1993
5221159	Subsurface contaminant remediation, biodegradation and extraction methods and apparatuses Methods and apparatuses for removing contaminants from soil and an associated subsurface groundwater aquifer. An injection well(s) is drilled through the vadose zone to a depth below the water table defining the upper boundary of the aquifer. An extractio...	06/22/1993
5193934	In-situ thermal desorption of contaminated surface soil An in-situ thermal desorption system utilizes perforated or slotted pipe buried in the soil below the depth of contamination in the soil. The surface of the soil is covered with a layer of permeable insulation (to conserve heat and to provide a gas migrat...	03/16/1993
5181796	Method for in situ contaminant extraction from soil Disclosed is a method and apparatus for the in situ removal of contaminants from contaminated soil wherein exhaust gas from an internal combustion engine is injected at an elevated temperature into contaminated soil creating a sweep gas driving volatile o...	01/26/1993
5076727	In situ decontamination of spills and landfills by focussed microwave/radio frequency heating and a closed-loop vapor flushing and vacuum recovery system Moist, warm, clean air from a vapor treatment system is injected into wells which are screened only at the contaminated depth forcing vapor flow only through the contaminated region. Intermediate the injection wells is an extraction well which is also scr...	12/31/1991
5018576	Process for in situ decontamination of subsurface soil and groundwater A method is provided for in situ decontamination of contaminated subsurface area by injection of steam into injection wells and withdrawing liquids and vapors from extraction wells under subatmospheric pressure whereby steam is passed through the contamin...	05/28/1991
4982788	Apparatus and method for removing volatile contaminants from the ground Hazardous volatile contaminants are removed from the ground by circulating air between two substantially parallel wells and by removing the vapors of the organic compound from the circulated air using at least one of a condenser and a demister. To enhance...	01/08/1991
4842448	Method of removing contaminants from contaminated soil in situ A method of removing contaminants from a contaminated soil area in situ comprises the steps of placing a barrier in engagement with the exposed surface of the contaminated soil area, sealing the barrier around the periphery of the contaminated soil area a...	06/27/1989

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Class 405/128.35 - With heat