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7271199 |
Removal of PCB and other halogenated organic contaminants found in ex situ structures
Emulsified systems of a surfactant-stabilized, biodegradable water-in-solvent emulsion with bimetallic particles contained with the emulsion droplets are useful at removing PCBs from ex situ...
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7250287 |
“Transformer” aerobic digestion method, a system for treating biodegradable waste material through aerobic degradation
This method facilitates the cost effective treatment of liquid, hazardous, and solid waste in a landfill or composting site or any other containment facility. The ability to distribute the oxygen...
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7235181 |
Metal powder for decomposition of organic halogen and method for manufacturing the same
The present invention is to provide metal powder capable of decomposing and remedying various range of organic halogen compounds including organic halogen compounds which are difficult to be...
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7166228 |
Method of treating a subsurface formation with ferrous iron to reduce contaminants to harmless species
A method for treating a subsurface formation with a ferrous compound, to reduce a contaminant therein, involves introducing into the subsurface formation a ferrous compound in combination with...
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7128498 |
Method of containing and at least partially remediating contaminants in soils, including sediments
In one application for containing and remediating contaminants in sediments, employing a geocomposite eliminates the need for a thick cap or removal and subsequent ex situ treatment of the...
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7115203 |
Remediation with ozone of sediments containing organic contaminants
A system for treating sediments contaminated with organic contaminants, such as polychlorinated biphenyls (PCBs) and other contaminants polyaromatic hydrocarbons (PAHs) and...
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7105084 |
Hybrid flow pond
A passive treatment system for removing metals, especially manganese, from mine drainage and other aqueous solutions. The Hybrid Flow Pond (HFP) is an open, pond-like structure utilizing a...
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7101115 |
In situ stabilization of persistent hydrophobic organic contaminants in sediments using coal- and wood-derived carbon sorbents
To overcome obstacles faced by current remediation technologies for contaminated sediments, the present invention provides a new strategy based on in situ control of hydrophobic organic...
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7077963 |
Processes for water treatment
The invention provides compositions comprising bauxite refinery residues that have been reacted with sufficient calcium and magnesium ions that they have a reaction pH of less than 10.5, and one or...
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7037423 |
Method for removal and detoxication of dissolved metals in a rainwater discharge
The present invention provides a water treatment apparatus and method for reducing toxicity in zinc containing acid stormwater runoff, the apparatus comprising a first filter layer of high calcium...
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7022194 |
Method of treating a paint booth dry filter
The present invention includes a composition having detackifying and detoxifying properties such that the composition is useful for detackifying and detoxifying paint particles in spray booth water...
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7011756 |
In situ immobilization of metals within density variant bodies of water
A method for treating (in situ) large bodies of water contaminated with heavy metals and having varying density stratas to immobilize the contaminant metals is disclosed. The method, or process for...
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7008964 |
Contaminant removal from natural resources
A zero-valent metal emulsion containing zero-valent metal particles is used to remediate contaminated natural resources, such as groundwater and soil. In a preferred embodiment, the zero-valent...
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6994491 |
Gas recovery from landfills using aqueous foam
Hydrogen sulfide in a landfill is reduced by dispersing a hydrogen sulfide control agent, such as an iron compound, into the landfill. The hydrogen sulfide control agent may be a component of an...
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6991405 |
Application of inert gas mixtures to prevent and/or to control sulfide mineral oxidation and the generation of acid rock drainage
A system, computer program product and method of preventing and controlling sulfide mineral oxidation and generation of acid rock drainage in a mass of sulfidic waste is provided. The mass of...
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6962561 |
Method for biosolid disposal and methane generation
A method for the disposal of biosolids, the method comprising providing a supply of biosolids; selecting an introduction formation below a ground surface, the introduction formation comprising a...
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6926837 |
Process for the treatment of waste materials
The invention relates to a mixture and a process for the treatment of waste materials and the use of the mixture for the treatment of waste materials and waste material treated therewith. The...
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6921477 |
Groundwater treatment system and method
A groundwater treatment system, which includes subterranean inlet, treatment, and outlet portions. The inlet portion is configured to collect groundwater from an aquifer. The treatment portion...
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6893570 |
Metal removal process
The slag-only Vertical Flow Pond, which we have developed, is a passive treatment component capable of removing large concentrations of metals, especially manganese, from water to extremely low...
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6878281 |
Wastewater management system
A method of and an apparatus for rejuvenating a wastewater treatment system of the type including a septic tank, an aerobic treatment unit or the like connected by a pipe to a plugged downstream...
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6843617 |
Stabilization of toxic metals in a waste matrix and pore water
A method is provided for stabilizing toxic materials in a waste matrix and in the pore water of the waste matrix. The method includes the steps of combining with the waste matrix (and pore water)...
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6830695 |
In situ remediation process using divalent metal cations
An in situ process for treating ambient solid materials (e.g., soils, aquifer solids, sludges) by adding one or more divalent metal cations to the ambient solid material. The added divalent metal...
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6720176 |
Liquid chemical compositions containing soluble sulfates and methods for anaerobic bioremediation
Liquid chemical compositions are disclosed for anaerobic biodegradation, detoxification, and transformation of toxic organic and inorganic compounds in a contaminated geologic media under reducing...
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6688811 |
Stabilization method for lead projectile impact area
A method for reducing the leaching of lead from a lead projectile impact area acting to collect or stop such projectiles includes contacting the lead projectile impact area with a seed of dry...
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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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6592294 |
Situ formation of apatite for sequestering radionuclides and heavy metals
Methods for in situ formation in soil of a permeable reactive barrier or zone comprising a phosphate precipitate, such as apatite or hydroxyapatite, which is capable of selectively trapping and...
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6561733 |
Method and apparatus for treating landfills
A method for treating a landfill formation. The method includes the steps of preparing a water soluble resin solution, preparing a catalyst solution, and introducing separate streams of the resin...
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6550552 |
Method for the removal and recovery of the oil component from drill cuttings
Oil drill cuttings, containing an oil-based mud, may be treated by mixing the cuttings with an organic solvent. The oil drill cuttings are then separated from the organic solvent and extracted oil....
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6544426 |
Method of quickly decomposing and removing an organic chlorine compound by a hollandite-type photocatalyst
A method of quickly decomposing and removing an organic chlorine compound, which comprises coating a liquid containing an organic chlorine compound on the surface of a photocatalyst so that the...
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6543964 |
Stabilization of arsenic-contaminated materials
A method for stabilizing arsenic in a waste matrix includes the steps of combining with the waste matrix an agent for controlling the oxidation-reduction potential of the matrix, an agent for...
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6471443 |
Method and apparatus for injecting steam into landfills
A method of injecting steam into a landfill is provided. The steam enhances methane gas production in the landfill during the anaerobic phase, accelerates decomposition/biodegradation of the...
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6435769 |
Gas-phase modification in earth materials
A process for treating earth materials such as rock heaps to prevent acid rock drainage therefrom is disclosed. First, the oxygen concentration in the gas-phase of the rock heap is decreased, that...
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6406219 |
Greenhouse gas emission disposal from thermal power stations
A process is provided for reducing a greenhouse gas emission component of a combustion gas from a thermal power generation plant. The thermal power generation plant is located in a coastal region...
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6379543 |
Water treatment system
Disclosed is a water treatment system ( 10 ) including: (a) a water permeable wall portion ( 12 ) defining a water treatment portion ( 18 ) of a waterway to be treated; and (b) a treating portion...
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6350383 |
Remediation material and remediation process for sediments
A material and method for removal of environmental oxyanions (and especially phosphates), the material comprising a substrate such as a clay modified with complexing elements selected from Group...
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6309338 |
Method and plant for the treatment and stabilization of materials containing environmentally noxious constituents
In a method for the treatment, in particular stabilization, of materials containing environmentally noxious constituents, especially from the incineration of waste, in which the materials are...
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6309337 |
Method of forming an insoluble phosphate mineral species
The present invention discloses a method of forming phosphate mineral species of the apatite family, and the mineral species thus formed, by contacting soil or solid waste material containing...
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6299380 |
Process for treating dredge detritus
A process and machine for receiving and processing to a transportable and usable condition, water soaked waste dredge removed from watery bodies. The process includes the steps of separating...
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6293731 |
Method for treatment of dredged materials to form a structural fill
A method for treating materials dredged from a waterway, such as a harbor or channel, and forming a mixture suitable for beneficial re-use as structural fill. The dredged materials (28) may be...
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6290637 |
Phosphate mineral-based reactive barrier containment system
A phosphate mineral based reactive barrier system. Phosphate minerals are known to be sinks for heavy metal contaminants. The reactive barrier prevents the release of contaminants from waste...
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6254312 |
Stabilization of arsenic-contaminated materials
A method for stabilizing arsenic in a waste matrix includes the steps of combining with the waste matrix an agent for controlling the oxidation-reduction potential of the matrix, an agent for...
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6186939 |
Method for stabilizing heavy metal in a material or waste
Heavy metal bearing materials during production, processing and/or handling, and/or in landfills, storage or retention areas are stabilized prior to the generation of management as a waste by...
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6050929 |
Method for stabilizing heavy metal bearing waste in a waste generation stream
Heavy metal bearing products during production, processing and/or handling, and/or in landfills, storage or retention areas are stabilized prior to the generation or management as a waste by...
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5951457 |
Method to reduce hexavelant chromium in soils, sediments, industrial waste and other contaminated materials using ascorbic acid
The concentration of potentially toxic hexavalent chromium, {Cr(VI)}, in chromium-bearing soils/materials existing in the form of soils, sludges, sediments, fill, industrial wastes, or other...
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5931773 |
Method for treatment of solid waste to minimize permeability of the waste
This invention relates to the treatment of contaminated materials including soils and solids to reduce its permeability, and in particular to chemical treatment of waste or solids containing high...
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5928522 |
Method for processing oil refining waste
Refinery waste feedstock is screened to remove large particles and is diluted to less than 5% solids weight percent to form a slurry. The slurry is agitated and heated to 180° F. or higher for a...
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5898093 |
Treatment process for contaminated waste
A process for treating contaminated waste to stabilize environmentally harmful heavy metal. The contaminated waste is contacted with a mixture of (i) inorganic sulfide, (ii) calcium phosphate to...
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5877393 |
Treatment process for contaminated waste
A process for treating contaminated waste to stabilize environmentally harmful heavy metals. The waste is contacted with a mixture of a sulfide, preferably calcium sulfide, an inorganic phosphate,...
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5860908 |
Water insoluble heavy metal stabilization process
Ash residues produced from solid waste combustion and certain industrial residues which are sometimes contacted with water for dust control, quenched for temperature reduction or subjected to water...
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5855664 |
Solid waste landfill cover material and method of extending the useful life of a solid waste disposal landfill
A method of manufacturing Construction and Demolition ("C&D") disposal debris into a substitute/alternative daily/initial cover product approved by an environmental regulatory authority for use at...
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