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| Number | Title | Issue Date |
| 8147703 | Method for processing sludge The invention relates to a method for processing sludge, comprising the addition of a lime-based basic agent to a sludge having a first pH value in order to raise the pH to a second value higher than the first one, adding at least one anionic organic flocculating ag... | 04/03/2012 |
| 8137567 | Method for fluid remediation and removing particulates from an aqueous stream A method for fluid remediation and removing particulates from an aqueous stream is described herein. The method can use a separation component and a clarifier component. A slurry can flow to a scalping shaker which can separate the slurry, forming a first effluent. ... | 03/20/2012 |
| 8119011 | Optimized alumina coagulants for water treatment Substitution of a single Ga-atom or single Ge-atom (GaAl12 and GeAl12 respectively) into the center of an aluminum Keggin polycation (Al13) produces an optimal water-treatment product for neutralization and coagulation of anionic con... | 02/21/2012 |
| 7875189 | Method for separating suspended solid materials from aqueous systems with colloidal flocculants The invention relates to a method for separating suspended solid materials from aqueous systems, in which the latter is mixed with a flocculant made of polymer colloidal particles with cationic surface charge and subsequently the flocculated material is separated fr... | 01/25/2011 |
| 7422692 | Raw influent treatment processes eliminating secondary biological treatment Presently no chemicals are added in the pulp/paper mills wastewater treatment. There is a loop hole with the Biological Oxygen Demand test utilized. Regulators depend on the Biological Oxygen Demand test. All mills are discharging raw untreated wastes high in Chemic... | 09/09/2008 |
| 7419604 | Use of boron compounds to precipitate uranium from water A method is provided for removing uranium from water. The method includes the mixing of a boron reagent with water contaminated with uranyl dication ions, leading to removal of the uranium from that water. ... | 09/02/2008 |
| 7419602 | Selenium removal from water A process for removing selenium from a water stream, in particular a waste water stream, by: 1) the addition thereto of a ferric salt, followed by 2) the addition of a cupric salt and pH adjustment to a pH value in the range of from about 6.5 to about 8.0, thereby f... | 09/02/2008 |
| 7419605 | 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 ... | 09/02/2008 |
| 7410589 | Hog manure treatment method The invention relates to a method of treating manure such that odor from the manure is significantly reduced or eliminated and producing therefrom recyclable water, value-added biosolids and ammonia. Specifically, the manure is combined with lime at high pH. The mat... | 08/12/2008 |
| 7404902 | Method for treating water A composition for treating water contained in enclosures, such as swimming pools, spas, whirlpool tubs and cooling towers, which includes at least one boron compound, cyanuric acid, at least one mineral remover and at least one clarifier is provided. A composition a... | 07/29/2008 |
| 7390416 | Method for the removal of metals, including a co-precipitation of molybdenum, from wastewater An improved method to remove metals, including molybdenum, from industrial wastewater, by chemical precipitation of the metals, followed by settling and dewatering of the precipitate. ... | 06/24/2008 |
| 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 is separated into solids and liquids. The liquid is treated and recy... | 05/13/2008 |
| 7364654 | In-home water treatment system A method and apparatus are provided for a water treatment system that includes both filtration and ultraviolet disinfection elements in a single unit. Various embodiments include a complete treatment system having replaceable filter elements or granular filter media... | 04/29/2008 |
| 7344647 | Process for treating waste water to remove contaminants Recycled waste water is treated to remove contaminants and produce a sludge cake with a high percentage of solids and to produce a treated recycled waste water that can be discharged into a municipal sewer system. ... | 03/18/2008 |
| 7338604 | Process for recycling paint flush solution A process for removing solids from a water-based flush solution, The process includes: providing dirty flush solution; directing the dirty flush solution to a treatment vessel; adding one or more chemicals to the treatment vessel to form a treated flush solution; se... | 03/04/2008 |
| 7337788 | Compositions useful for cleaning solvent-based paint from paint delivery installations Uncured solvent-based paint may be flushed from a paint delivery installation using a substantially non-aqueous composition containing one or more organic solvents and a polymer having acid and/or amine functional groups. ... | 03/04/2008 |
| 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 agent to the water and allowing floccules including metal compounds to... | 02/26/2008 |
| 7323429 | Clay composition A method for pacifying the spent bed material resulting from the synthesis of organohalosilanes and halosilanes by mixing clay with spent bed material. Clay compositions containing at least 10 weight % of clay and spent bed material, as well as ceramic compositions ... | 01/29/2008 |
| 7300585 | Method of treatment of effluent stream A method for treating an effluent stream containing material which it is desired to remove from the effluent stream comprises treating the effluent stream with a solution of an acid and a first polymer to reduce the pH of the thus-treated stream to a range of about ... | 11/27/2007 |
| 7285222 | Method for recycling sludge during waste-water treatment A method for recycling sludge during waste-water treatment firstly utilizes a process of chemical coagulation to produce sludge rich in copper ions. The sludge is then leached in a sulfuric acid storage tank with sulfuric acid of concentration 1-2N, whereby a extrac... | 10/23/2007 |
| 7273561 | Method for determining the chemical dosage required to reduce sulfides in wastewater to acceptable levels An apparatus and method of determining chemical dosage required to reduce sulfides in wastewater includes providing a headspace apart from the wastewater. The temperature of the wastewater and the concentration of sulfide gas in the headspace are measured. Dissolved... | 09/25/2007 |
| 7264733 | Method for treating heavy-metal-containing wastewater using sulfidizing agent A method and apparatus for treating heavy-metal-containing wastewater using a sulfidizing agent. Sulfidizing treatment is carried out by adding a sulfidizing agent to heavy-metal-containing wastewater, while detecting hydrogen sulfide gas generated from the wastewat... | 09/04/2007 |
| 7264729 | Process for reducing contaminants in condensate resulting from the conversion of bauxite to alumina This invention relates to a process for reducing the contaminants in condensate resulting from the conversion of bauxite to alumina. ... | 09/04/2007 |
| 7255795 | Process for selectively removing molybdenum from liquid mixtures containing it together with vanadium Process for selectively removing molybdenum from liquid mixtures containing it, in a quantity greater than (200) mg/l, together with vanadium characterized in that it comprises the following steps: bringing the liquid mixture to a pH of less than (3); adding a solut... | 08/14/2007 |
| 7255793 | Methods for removing heavy metals from water using chemical precipitation and field separation methods A two-step chemical precipitation process involving hydroxide precipitation and sulfide precipitation combined with “field separation ” technology such as magnetic separation, dissolved air flotation, vortex separation, or expanded plastics flotation, effectivel... | 08/14/2007 |
| 7250460 | Inorganic-organic polymer nanocomposite and methods for making and using A method of forming a composition comprising adding at least one first compound that is at least one of an alkali metal salt, an ammonium salt, an alkali metal hydroxide, or an ammonium hydroxide and at least one second compound that is at least one of a Group IIA s... | 07/31/2007 |
| 7247239 | Method for biological treatment of water by adding macromolecular carbohydrates The invention relates to a method for biological treatment of water, wherein macromolecular carbohydrates are added to the water to be treated, optionally together with vitamins and other additives, whereby a great reduction in residues is already achieved after add... | 07/24/2007 |
| 7244363 | Methods for treating heavy halide brines with permanganates The present invention relates to the use of permanganate in the removal of heavy metal contaminants from heavy halide brines. In some embodiments, the present invention discloses methods of treating heavy halide brines that comprise providing a heavy halide brine th... | 07/17/2007 |
| 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 containing a polymer substituted with an amino group, a halogenating ag... | 06/12/2007 |
| 7192527 | Processes for removing oil from solid wellbore materials and produced water Processes for removing oil from a solid wellbore material such as drill cuttings or water such as produced by a subterranean formation include contacting the solid material/water with an amino-substituted polymer such as chitosan and a halogenating agent. The oil se... | 03/20/2007 |
| 7182873 | Method of fluoride-containing wastewater treatment First, a primary fluoric ion concentration detection process is performed, and a primary calcium salt addition process is performed to add calcium salt in a first reaction tank, wherein the dosage of the calcium salt in the primary calcium salt addition process is d... | 02/27/2007 |
| 7179385 | Method for treating paint booth water systems The invention is a composition and method for treating paint booth water systems to facilitate paint removal. The composition comprises water, solid particles of insoluble organic polymer, such as, by way of non-limiting example, urea methanal copolymer, preferably ... | 02/20/2007 |
| 7161476 | Electronic tire management system An electronic tire maintenance system is provided for measuring a parameter of a device at a first location. The system includes a sensor for measuring the device parameter and generating a data signal representing the measured parameter. The system also includes a ... | 01/09/2007 |
| 7157009 | Method for removing oocysts from water A method for stabilizing and removing Cryptosporidium oocysts or Giardia cysts from water. The method comprises adding chitosan, a salt or solution of chitosan to water containing Cryptosporidium oocysts or Giardia cysts and a halogenatin... | 01/02/2007 |
| 7115201 | Method of treating mine drainage A method of treating mine drainage water including the step of adding a scale control agent to the mine drainage water and, optionally, adding an oxidizing agent to the mine drainage water and/or precipitating and settling the metals in their hydroxide form from the... | 10/03/2006 |
| 7108792 | Process for cleaning wash water Agents are used as cleaning agents and also as agents to purify the water in water treatment plants. The agents are a mixture of phosphates and fatty acid salts. Precipitation agents are used such as, polyvalent metals. The pH is adjusted. Flocking agents can be use... | 09/19/2006 |
| 7105094 | Method for the removal of heavy metals from acidic wastewater and chemical solutions A method which uses a process reactor having three separate reaction stages to remove high concentrations of heavy metals from acidic wastewater and chemical solutions. During each of three stages the pH level of the wastewater is increased and sludge and flocculate... | 09/12/2006 |
| 7084097 | Cleaning solution for substrates of electronic materials The present invention relates to a cleaning solution capable of removing efficiently at the same time particles and metallic impurities from a substrate surface without corroding metallic materials. The cleaning solution for cleaning substrates of electronic ... | 08/01/2006 |
| 7048859 | Method for treatment of aqueous streams comprising biosolids A process is provided which can be used to clarify substantially aqueous streams and optionally separate biosolids, especially proteins, from food processing operations which comprises contacting an aqueous stream comprising biosolids with an anionic inorganic collo... | 05/23/2006 |
| 7048854 | Apparatus for the removal of heavy metals from acidic wastewater and chemical solutions An apparatus which uses a process reactor having three separate reaction stages to remove high concentrations of 3000 mg/l heavy metals from acidic wastewater and chemical solutions. During each of three stages the pH level of the wastewater is increased and sludge ... | 05/23/2006 |
