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7628925 |
Method of dewatering sludge and the sludge thus dewatered
The invention concerns a method for dehydrating sludge, comprising adding a basic agent to sludge having a pH not more than 8, adding to the sludge at least one organic flocculating constituent, by...
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7608191 |
Production of a fermentation product
A process of separating suspended solids from a fermentation liquor by subjecting the liquor to a solids-liquid separation stage, wherein the fermentation liquor is produced in a fermentation...
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7597810 |
Process for production of suspensions, solutions, or dispersions
The present invention provides a method for efficiently filtering slurry suspensions in a vessel including a nozzle flange near the vessel, when solids in the slurry suspensions being treated in...
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7595001 |
Process for the treatment of saline water
A process and an apparatus are described for treating seven types of saline waters each having a concentration of total dissolved solids exceeding 1 g/L, wherein the concentration of total...
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7582444 |
Use of flocculating agents for separating the solid residue in hydrolysed fermentation substrates
Process for improving the separation efficiency of residual solid matter from the liquid phase of an aqueous acid hydrolysate of a naturally occurring polysaccharide comprising dissolved sugars,...
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7582215 |
Production of a fermentation product
A process of separating suspended solids from a fermentation liquor by subjecting the liquor to a solids-liquid separation stage, wherein the fermentation liquor is produced in a fermentation...
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7575657 |
Method and apparatus for reducing the amount of sludge produced in a pulp and/or paper mill
Method and apparatus for reducing the amount of sludges produced in a pulp and/or paper mill. The sludge produced in a pulp and/or paper mill as a result of waste water treatment is conveyed to...
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7560031 |
Process for treating pond water
A process for the treatment of phosphoric acid plant pond water facilitating the recovery of phosphorus values from the input pond water. In certain aspects the process recycles solids from a later...
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7517458 |
Process obtaining landfill disposable wasted from hydrocarbon containing sludge
A method of processing oily sludge to remove a substantial proportion of the water and hydrocarbon content therefrom to form a solid cake of waste material that is suitable for disposal in land...
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7514005 |
Method of processing drilling fluid
A method for processing drilling fluid comprising an oil and water emulsion and solid material includes breaking the emulsion into an oil phase and a water phase, increasing the surface area of the...
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7455997 |
Production of fermentation product
A process of producing fermentation product comprising the steps of, (i) forming an acidified suspension of particulate plant derived material comprising a first polysaccharide which is more...
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7431846 |
Method for concentrating solids from drilling slurry
An apparatus to separate solids from drilling slurry, having an inlet positioned over an outlet of a concentration tank to displace water that would otherwise enter the down-stream centrifuges....
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7429329 |
Hybrid chemical/mechanical dewatering method for sewage treatment plants
A hybrid chemical/mechanical dewatering sewage treatment plant and method employing rapid sludge chemical dewatering technology in conjunction with slower conventional mechanical dewatering solids...
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7416671 |
Separation and recovery of bitumen oil from tar sands
A process for the separation of bitumen oil from tar sands and the like. Slurry is supplied to a mixing chamber of a jet pump at an input end of the process. The slurry is agitated within the jet...
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7413681 |
Process to dewater a soot water slurry obtained in a gasification process
A process for partial oxidation of a hydrocarbon gas or liquid, involving the steps of partial oxidation and removal of soot by forming a slurry having water and carbon from the gaseous oxidation...
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7404903 |
Drill cuttings treatment system
A process for the separation of oil from invert mud drill cuttings. Invert mud drill cuttings are supplied to a mixing chamber of a jet pump. The invert mud drill cuttings are agitated within the...
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7384562 |
Treatment of brown grease
The invention is a process for treatment of brown grease, where the brown grease comprises water, food solids and free-oil. This process starts with the collection of the brown grease into a...
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7371328 |
Method for treating hog and animal waste
An animal treatment method comprises flushing the animal waste from a barn to a holding tank where the waste is mixed with an alkaline solution to kill pathogens. After neutralization, the solution...
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7361283 |
Extraction and treatment of heavy metals
Contaminated waste streams or soil or sludge is subjected to a first treatment stage with an acid liquor at a pH below 2 and at a solids content from 5 to 30%; then the liquid and solid phases from...
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7344648 |
Use of silicones for causing or facilitating the flow of dispersions of solid particulates in liquids
A method for causing or facilitating the flow of dispersions of solid particulates in liquids, having characteristics of high viscosity or resistance to flow, with particular reference to sludges...
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7335309 |
Method for removing metal compounds from waste water
A method for removing metal compounds from waste water comprising the steps of adjusting the pH of the water to from 5 to 12 and preferable 6 to 9; aerating the waste water; adding a flocculating...
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7309440 |
Method for desalination of water and removal of carbon dioxide from exhaust gases
This invention relates to a method for desalination of seawater ( 5, 30 ) and separation of CO 2 from exhaust ( 77 ) from a gas turbine ( 7 ). LNG ( 4 ) is fed into a heat exchanger ( 6 ) in which...
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7291275 |
Method for clarifying industrial wastewater while minimizing sludge
Methods are described for removing contaminates from aqueous industrial wastewater process streams, specifically industrial laundries to yield a less contaminated aqueous effluent for discharge to...
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7264734 |
Method for treating dredged material
The present invention provides a method for treating dredged material in which liquid is first added to the dredged material, and dewatering the dredged material to obtain a filtrate and a solid...
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7232554 |
Process for recovering arsenic from acidic aqueous solution
A process for the recovery of arsenic trioxide from acid solutions, particularly the aqueous acid effluent produced by a gas-washing process in the pyrometallurgy of copper sulfide ores is...
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7232505 |
Method of regenerating an aqueous glycol solution containing salts
Method of regenerating a glycol solution containing water, hydrocarbons and salts. The glycol solution is expanded in drum ( 2 ), then distilled in column ( 7 ). The concentrated glycol collected...
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7229952 |
Additive packages for removing oil from solid materials recovered from a well bore
An additive package for removing oil from solid material recovered from a well bore, e.g., drill cuttings and produced sand, is provided. The additive package includes an aqueous acidic solution...
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7217779 |
Phosphoric ester demulsifier composition
A phosphoric ester demulsifier composition prepared by reacting one or more alkylphenol-formaldehyde resin alkoxylates or one or more polyalkylene glycols, or a mixture thereof, with about 0.001 to...
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7160470 |
Method of clarifying industrial laundry wastewater using cationic dispersion polymers and anionic flocculent polymers
Methods are described for removing contaminates from aqueous industrial wastewater process streams, specifically industrial laundries to yield a less contaminated aqueous effluent for discharge to...
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7153436 |
Method for enhancing cyclonic vessel efficiency with polymeric additives
The present invention is directed to a novel method and system for enhancing the efficiency of hydraulic centrifugal separators (cyclones) in the removal of fine size particles from a liquid...
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7135116 |
Process for recovery of nutrients from wastewater
The present invention relates to a process for treating a wastewater comprising an ammonium ion species and a phosphorus ion species. The process comprises the steps of: (i) treating the effluent...
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7087171 |
Method for selective recovery and dewatering sewage sludge by using sludge-coal-oil co-agglomeration
Disclosed herein is a method for dewatering sewage sludge by using sludge-coal-oil co-agglomeration (“SOCA”) which comprises the steps of physically, chemically or biologically conditioning...
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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...
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6955796 |
Process for total environmental remediation of a phosphorus contaminated site
A process is disclosed for recovering elemental phosphorus from an aqueous sludge and converting the residue into non-hazardous waste. The sludge is separated into (1) a slurry of water containing...
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6923888 |
Process for recovering organic acids from bleaching liquors
The invention relates to a process for treating bleaching liquors from pulping processes based on organic acids. The process is characterized in that inorganic acid, such as nitric acid, phosphoric...
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6916426 |
Method of waste treatment
A method of treating an animal waste slurry so as to efficiently extract nutrients, and which can be performed in a zero-discharge system, comprises flocculating the slurry, processing, e.g....
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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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6863826 |
Animal waste effluent treatment
Animal waste such as fecal material from swine, chicken, turkey, and cattle is converted into useful forms such as fertilizer, other types of soil builders, and even nutrient feed additives....
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6860906 |
Process for preparing solutions of anionic organic compounds
Described is a process for preparing concentrated solutions or suspensions of anionic organic compounds which comprises a) acidifying an aqueous solution or suspension of an anionic organic...
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6846420 |
Process for removing oil from solid materials recovered from a well bore
The present invention provides a process and an additive package for removing oil from solid material recovered from a well bore, e.g., drill cuttings and produced sand. In this process, the solid...
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6824691 |
Process for treating liquid manure
Process for treating liquid manure, comprising the introduction of homogenized liquid manure into a tank, into which are introduced some polymers/copolymers that bring about an interchange to...
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6821440 |
Treatment of mineral materials
A process in which material comprising an aqueous liquid with dispersed particulate solids is pumped as a fluid then allowed to stand and rigidify and the rigidification is improved whilst...
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6808636 |
Treatment of sewage sludge
A method for reducing sludge viscosity of a sewage sludge having a solids concentration of at least 10% (w/w). The method comprises the steps of increasing the pH of the sludge to 9.5-12.5%, at...
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6797846 |
Fibrous crystal aggregates, preparation method thereof and use thereof
A crystal substance formed by precipitating as fibrous aggregates by making a metal aliphatic carboxylate dissolve completely in pure water, stirring, and gradually cooling the resulting solution....
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6797195 |
Method for recovering and separating metals from waste streams
A method for recovering and separating precious and non-precious metals from waste streams, which removes, separates, and recovers such metals in a cost effective manner with more than 95% removed...
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6776914 |
Process for treating liquid septage
A process for treating liquid septage and other biosolids having the steps of placing a known amount of liquid septage in a tank, mixing in a sufficient quantity of alkaline material to raise the...
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6755973 |
Waste water treatment process for animal processing contaminant removal
A process and system for removing animal processing contaminants and fats, oils, and greases from large volume quantities of waste water. In the process, a waste water stream containing the...
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6746646 |
Method and apparatus for the disinfecting biosolids
A biosolids treatment system comprising a storage tank for containing a quantity of biosolids sludge, a system of disinfection piping within the storage tank comprised of a segment of inner...
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6723246 |
Filter cleaning method
A method of cleaning a filter clogged with flocculating materials is provided. The method comprises determining the flocculated materials clogged on the filter and adding a dispersing agent to...
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6719906 |
Process for the preparation of solutions of anionic organic compounds
A process for the preparation of concentrated solutions or suspensions of anionic organic compounds is described, which process comprises a) acidifying an aqueous solution or dispersion of an...
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