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7360966 |
Methods and systems for remediating contaminated soil
A system and method for remediation of contaminated soil are provided. The system comprises a soil remediation cell of contaminated soil and a plurality of multi-functional conduits located within...
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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...
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6824328 |
Vapor collection and treatment of off-gas from an in-situ thermal desorption soil remediation
An in situ thermal desorption system may be used to remove contamination from soil. Off-gas removed from the soil may be transported from the soil to a treatment facility by high temperature hoses...
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6648551 |
Method for stabilizing and reducing permeability of geologic or waste materials
Methods for inducing the precipitation of substantially water insoluble mineral carbonates in pores, spaces and fractures by conveying a carbon-dioxide (ie. CO 2 ) bearing gaseous phase or an...
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6464430 |
Soil decontamination apparatus and method
A soil decontamination apparatus includes a pug mill with twin, side-by-side augers or shafts with paddles moving the soil along a treatment path. A roof over the pug mill includes burners...
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6276872 |
Low temperature heat-assisted evaporation impoundment
The assisting in the evaporation of water from a surface impoundment or other impoundment that utilizes a closed heat pipe system that is partially submerged within the material of the surface...
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6142706 |
Thermal treatment wall
A thermal treatment wall emplaced to perform in-situ destruction of contaminants in groundwater. Thermal destruction of specific contaminants occurs by hydrous pyrolysis/oxidation at temperatures...
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6121040 |
Process for remediation of contaminated soil
Provided is a process for remedying a contaminated soil characterized in that a contaminated region of the ground is purified by the steps of first freezing the contaminated region, then injecting...
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6102622 |
Remediation method
A method is provided to remove contaminants that are more dense than water from a contaminated volume of earth, the contaminants pooled above a layer of earth, the method comprising the steps of:...
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5997214 |
Remediation method
A method is provided to remove volatile liquid contaminates from a contaminated volume of earth, the contaminated volume lying above a noncontaminated layer of earth, the method including the steps...
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5994670 |
Electrical heating of soils using high efficiency electrode patterns and power phases
Powerline-frequency electrical (joule) heating of soils using a high efficiency electrode configuration and power phase arrangement. The electrode configuration consists of several heating or...
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5988947 |
Multi-section soil remediation device
The present invention relates generally to a soil remediation device, and more particularly to a multi-section soil remediation device having at least one section for applying a variety of soil...
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5988280 |
Use of engine heat in treating a well bore
A method of heating a chemical solution used in a well bore having a tubing string is disclosed. The well bore will intersect a hydrocarbon reservoir. The method will comprise providing a diesel...
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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...
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5931600 |
Thermal desorption and destruction of dense non-aqueous phase liquid in fractured bedrock
An in-situ method for thermal desorption, extraction, and destruction of dense nonaqueous organic contaminants in fractured bedrock is accomplished through the use of thermal wells, a flameless...
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5888022 |
Method and system for treating bio-degradable waste material through aerobic degradation
A system and method are provided for treating biodegradable waste material in a landfill by aerobic degradation. Waste material is deposited in the landfill and covered. The moisture content in the...
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5830752 |
Apparatus for in-situ soil remediation
An apparatus for in-situ remediation of contaminated soil or sludge having a trenching tool and an injection system for applying remediation agent to the contaminated material during in situ...
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5765964 |
Submerged combustion process and apparatus for removing volatile contaminants from groundwater or subsurface soil
Combustion is used as a source of heat to remove polluting volatiles from contaminated groundwater and subsurface soil. The combustor is placed in a well, either in or out of an aquifer, to produce...
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5730550 |
Method for placement of a permeable remediation zone in situ
A method for placement of remediation zones for treatment of contaminated groundwater in situ (10, 10A, 50, 60, 70, 80, 124) is described. The zones can be infiltrated or can be excavated and...
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5681130 |
Active cooling-based surface confinement system for thermal soil treatment
A thermal barrier is disclosed for surface confinement with active cooling to control subsurface pressures during thermal remediation of shallow (5-20 feet) underground contaminants. If steam...
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5667339 |
Cryogenic method and system for remediating contaminataed earth
An advancing freeze front is established in a porous region adjacent to or within contaminated earth. A flow of contaminated liquid phase water migrates toward the freeze front and a concentration...
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5660500 |
Enhanced deep soil vapor extraction process and apparatus utilizing sheet metal pilings
A system for in situ decontamination of contaminated soil in a contaminated zone comprising: a. a metal section placed in the contaminated soil, b. a heating means attached to said metal...
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5639936 |
Solar energy in-situ soil desorption apparatus and method including controlled air intake
A method and apparatus for decontaminating in-situ soil by use of solar energy is provided. A targeted area of contaminated in-situ soil is covered with a substantially sunlight-transmitting,...
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5558463 |
Soil remediation apparatus and method
An integrated soil warming probe assists soil remediation by heating contaminated soil. A thermal probe is driven into the contaminated soil and fluid injected into the soil proximate the thermal...
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5551799 |
Cryogenic method and system for remediating contaminated earth
An advancing freeze front is established in a porous region adjacent to or within contaminated earth. A flow of contaminated liquid phase water migrates toward the freeze front and a concentration...
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5547311 |
Cathodic protection, leak detection, and thermal remediation system
A system for cathodically protecting a structure that is in contact with soil and for extracting vapor or liquid from the soil, comprising a porous conducting material in direct contact with the...
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5545804 |
Metal fixation in oily waste contaminated soil using microwave radiation acting on in-situ produced coupling agent
Heavy metals contaminants in soils are fixed and rendered non-leachable by the process of heating the metal contaminated soil containing a hydrocarbon liquid, at an elevated temperature sufficient...
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5545803 |
Heating of solid earthen material, measuring moisture and resistivity
The present invention includes a method of treating solid earthen material having volatile, semi-volatile, and non-volatile contaminants that utilizes electrical energy. A plurality of electrodes...
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5452763 |
Method and apparatus for generating gas in a drilled borehole
The present apparatus and method utilizes a downhole electrolysis process implemented by means of an elongated gas generating apparatus containing an array of cascaded electrolysis cells...
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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...
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5441365 |
Apparatus and process for treating contaminated soil gases and liquids
Apparatus for extracting contaminants from a stream comprising a contaminant-containing mixture of liquids and gases which comprises: (a) a contaminant-containing mixture input; (b) a vapor-liquid...
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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...
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5347070 |
Treating of solid earthen material and a method for measuring moisture content and resistivity of solid earthen material
The present invention includes a method of treating solid earthen material having volatile, semi-volatile and non-volatile contaminants. Six electrodes are inserted into a region of earthen...
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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...
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5287818 |
Method for killing soil pathogens with micro-wave energy
A method of killing soil pathogens to improve the agricultural production of a field comprises the steps of moving a plurality of agricultural tools through the soil and during this movement...
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5271693 |
Enhanced deep soil vapor extraction process and apparatus for removing contaminants trapped in or below the water table
An Enhanced Deep Soil Vapor Extraction Process and Apparatus utilizes heaters placed into the soil at least to the depth of contamination and a vapor/condensate extraction system that withdraws...
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5259327 |
Process for killing soil pathogens
A process for killing soil pathogens to improve agricultural production includes the steps of treating a field with a soil conditioning agent to reduce the clods in the soil to microaggregates. Hot...
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5251700 |
Well casing providing directional flow of injection fluids
Disclosed is in situ decontamination methods and apparatus for injecting a hot gas into boreholes formed in a contaminated soil area to vaporize the soil moisture and contaminants, and for...
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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...
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5244310 |
In-situ soil heating press/vapor extraction system
An in-situ soil heating/treatment system consists of a frame to which are attached a plurality of heater spikes and a plurality of tubular, perforated vapor extraction spikes. An insulated shield...
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5228804 |
Method and apparatus for hydrocarbon-contaminated soil remediation
A method and apparatus for ex situ remediation of hydrocarbon-contaminated soil, comprising the excavation of the soil from its in situ position and forming a covered pile of loosened soil, at the...
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5209604 |
Soil decontamination
The top layers of soil contaminated with halogenated organic chemicals are remediated by initial heating at moderate temperature and reduced pressure to remove soil moisture and volatile...
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5199488 |
Electromagnetic method and apparatus for the treatment of radioactive material-containing volumes
Methods and apparatus for treating containers holding mixed wastes and regions of the earth contaminated with radioactive materials or mixed waste provide for extracting one of non-radioactive or...
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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...
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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...
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5169263 |
In-situ soil decontamination process with sub-surface vapor recovery
An improved in-situ soil decontamination heating process utilizes a submerged vapor recovery system comprising perforated or slotted pipes buried in the contaminated soil or below the depth of...
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5078958 |
Underground cooling enhancement for nuclear waste repository
The present invention relates to the retrievable storage of high-level nuclear spent fuel (waste). Such waste, which generates heat as it decays, is packed in sealed containers (2) which are placed...
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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...
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5066166 |
Apparatus for removing ground contaminants
A method and apparatus for removing fluid contaminants from a solid material is described. In a preferred embodiment, a cylindrical container having opening in its surface through which...
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4998848 |
Method and apparatus for removing ground contaminants
A method and apparatus for removing fluid contaminants from a solid material is described. In a preferred embodiment, a cylindrical container having openings in its surface through which...
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