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| Number | Title | Issue Date |
| 7188730 | Separation system for single stream compressed recyclables A screening system designed to provide separation of multiple fractions of New Screens Fines. News Screens Fines (“NSF”) contain a mix of compressed, unmarketable recyclables that are generally less than four inches in size created as a by-product of current Mat... | 03/13/2007 |
| 7059805 | Process for environmental pacification of drill cuttings The process for environmental pacification of drill cuttings which contain drilling fluid residue is characterized by mixing said cuttings with dehydrated limestone coke ash in the presence of water. Upon mixing the drilling fluid residue becomes entrapped into a no... | 06/13/2006 |
| 7029202 | Method for treating metal-contaminated water and soil A method for removing metal contaminants from water uses lignin derivatives, such as lignosulfonates and kraft lignin, a coagulant, such as a metal salt, and a pH-increasing composition. The lignin derivative is dispersed in the contaminated water, the coagulant is ... | 04/18/2006 |
| 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 soil absorption system includes a wastewater treatment unit which is in... | 04/12/2005 |
| 6772840 | Methods and apparatus for a subsea tie back A flow assurance system includes an inner pipe disposed within an outer pipe to assure flow through the outer pipe. During installation and relative axial movement with the outer pipe, the inner pipe is nearly neutrally buoyant or fully neutrally buoyant in the flui... | 08/10/2004 |
| 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 organic component of the trash prism during both the aerobic and... | 10/29/2002 |
| 6419423 | Method for remediating near-surface contaminated soil A method is provided to remove contaminants from near-surface contaminated soil, the method including the steps of: placing a plurality of metal sheets on the surface above the contaminated soil to form a contiguous cover over at least a portion of the co... | 07/16/2002 |
| 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 treated with ferrous compounds and water, the materials are was... | 10/30/2001 |
| 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 time sufficient to melt waxy petroleum solids, reduce the v... | 07/27/1999 |
| 5853450 | Method for treating bioorganic and wastewater sludges The method of treating wastewater or bioorganic sludges containing odor, animal viruses, pathogenic bacteria, and parasites to produce a bioactive but stabilized product that is useful as a soil substitute or as a fertilizer which can be applied directly ... | 12/29/1998 |
| 5853590 | Method for treating bioorganic and wastewater sludges A method of treating sludge to provide a stable product for use as a beneficial soil or fertilize for agricultural lands is disclosed which includes the steps of: (a) mixing sludge with at least one alkaline material in an amount sufficient to raise pH of... | 12/29/1998 |
| 5820541 | Process, formula and installation for the treatment and sterilization of biological, solid, liquid, ferrous metallic, non-ferrous metallic, toxic and dangerous hospital waste material A process, formula and apparatus for the treatment and sterilization of biological, solid, liquid, ferrous metallic, non-ferrous metallic, toxic and hospital dangerous waste or residual material utilizes a mixture of oxygen, ozone, water, and optionally, ... | 10/13/1998 |
| 5649785 | Method of treating solid waste, recovering the constituent materials for recycling and reuse, and producing useful products therefrom A three phase method of treating solid waste to eliminate hazards and preserve the resource value of the constituent materials, separating and recovering the constituent materials, and productively using those constituent materials, includes, in the first... | 07/22/1997 |
| 5562589 | Stabilizing inorganic substrates A process for stabilizing a substantially inorganic substrate and inorganic substrates admixed with organic chemicals comprises treating the substrate with sulfur at an elevated temperature thus converting the substrate into a solid, inert product which r... | 10/08/1996 |
| 5387738 | Reagent for treating a contaminated waste material and method for same A reagent material useful for converting a contaminated waste material, which is environmentally unacceptable, to a relatively harmless granular substance which is environmentally acceptable. The reagent material is comprised of an effective amount of alu... | 02/07/1995 |
| 5304708 | Alloying metal hydroxide sludge waste into a glass material A method for chemically stabilizing a hydroxide sludge waste material (10) having at least one contaminant is provided. The method of the present invention involves combining one or more oxides formed from each contaminants (11) contained within the hydro... | 04/19/1994 |
| 5245120 | Process for treating metal-contaminated materials A process for treating wastes contaminated by toxic metals and/or organic materials is disclosed. The process involves heating the metal-contaminated wastes to a temperature sufficient to volatilize the metals. This temperature is also high enough to dest... | 09/14/1993 |
| 5245121 | Reduced leaching of heavy metals from incinerator ashes A waste material which contains chromium and/or lead impurities is treated by mixing the waste material with diatomaceous earth and/or sodium borate and then heating the mixture in a free oxygen containing gas at about 500°-1500° C., preferably in the p... | 09/14/1993 |
| 5238583 | Method for converting a contaminated waste material to an innocuous granular substance A method for converting a contaminated waste material which is not environmentally acceptable to one that is environmentally acceptable. The waste material is mixed with an effective amount of reagent material, such as fly ash, in a containing means, such... | 08/24/1993 |
| 5229011 | Process for pathogen reduction in waste A process for pathogen reduction in waste where dewatered sludge having a solids content in the range of 10-60% is mixed with an additive selected from the group consisting of calcium oxide or calcium carbonate group. Hydration to calcium hydroxide occurs... | 07/20/1993 |
| 5177305 | Waste incineration process The process is the type wherein the solid portions of waste materials of all origins are crushed and ground to a granulometry of under 5 mm and then are heated to between 750° C. and 1,350° C. According to the invention, after the addition, if applicabl... | 01/05/1993 |
| 5135664 | Method for treating wastewater sludge A method for treating wastewater sludge which comprises the steps of further treating the sludges after they have been mixed with alkaline materials and are still in a wet condition with carbon dioxide containing gases wherein the carbon dioxide is a sign... | 08/04/1992 |
| 5091001 | Disposal of spent vanadium pentoxide catalyst by vitrification Spent oxidic catalyst, such as vanadium pentoxide from a sulphuric acid manfacturing process, is rendered into an environmentally acceptable non-leachable form suitable for disposable by incorporation into a vitrified amorphous slag formed of oxidic slag ... | 02/25/1992 |
| 5073271 | Utilization of soot from synthesis gas production in sewage treatment The soot obtained in the form of a soot-containing aqueous waste liquor in the course of synthesis gas manufacture is utilizable by a) mixing said liquor in a sewage sludge treatment plant with a sewage sludge to which organic flocculants are added as drainage... | 12/17/1991 |
| 5066472 | Method for processing the residues of a chlorosilane distillation Disclosed is a method for the processing of the residues that occur in the production of chlorosilane. The processing is performed by the separation of the residual chlorosilanes, followed by hydrolysis of these residues with water vapor. The water vapor ... | 11/19/1991 |
| 5037560 | Sludge treatment process A process and apparatus for reducing sludges, especially those sludges containing heavy metals and generated in electroplating, to a solid state where the toxic constituents of the waste are prevented from leaching. The process involves mixing a metallic ... | 08/06/1991 |
| 5013458 | Process and apparatus for pathogen reduction in waste A process for pathogen reduction in waste where dewatered sludge having a solids content in the range of 10-60% is mixed with an additive selected from the group consisting of calcium oxide or calcium carbonate group. Hydration to calcium hydroxide occurs... | 05/07/1991 |
| 4902431 | Method for treating wastewater sludge A method of decontaminating wastewater sludge to a level that meets or exceeds USEPA Process to Further Reduce Pathogens standards, wherein lime or kiln dust and/or other alkaline materials are mixed with wastewater sludge in sufficient quantity to raise ... | 02/20/1990 |
| 4838184 | Method and apparatus for disposing of landfill produced pollutants A method and apparatus for disposing of noxious landfill produced leachate and gases are provided. The method basically comprises the steps of combusting at least a portion of the landfill produced gases with air in a first combustion zone to produce a st... | 06/13/1989 |
| 4577999 | Process for storing liquid waste in salt cavities A liquid waste with a pH of 7 or more, which has been adjusted above ground if necessary, is treated above ground to produce a pumpable mixture, which has a boiling point above 85° C., flash point above 65° C., vapor pressure at 60° C. of up to 0.5 kp/cm | 03/25/1986 |
| 4532113 | Iron chloride waste treatment in molten salt A process for treating iron chloride wastes such as those obtained when chlorinating titanium ore is disclosed. The process involves reacting the iron chlorides with limestone in molten CaCl2.xH.sub.2 O, where x equals 3-6 and separating the re... | 07/30/1985 |
| 4111800 | Process for treating municipal solid waste and raw sewage sludge Raw sewage sludge is combined with a solution of sodium aluminate. Municipal solid waste is then treated with the sludge-aluminate mixture. The treated waste is then carbonized in a furnace.... | 09/05/1978 |
