Class / Patent application number | Description | Number of patent applications / Date published |
210759000 | Utilizing peroxy compound (e.g., hydrogen peroxide, peracid, etc.) | 31 |
20080203035 | WATER TREATMENT METHOD AND WATER TREATMENT APPARATUS - To minimize an amount of hydrogen peroxide required for controlling the production of bromic acid in an ozone/hydrogen peroxide treatment. The ozone/hydrogen peroxide treatment is performed at an ozone injection rate by which a predetermined dissolved ozone concentration of the water subjected to an ozone treatment alone can be maintained or at an ozone injection rate by which a specific ratio of absorbance at a specific wavelength of the water to absorbance at a specific wavelength of the water subjected to the ozone treatment alone can be achieved. It is preferable that the injection rate of hydrogen peroxide is 0.01 to 5 times the ozone injection rate on a mass basis. | 08-28-2008 |
20080237148 | WATER TREATMENT CONTROL SYSTEMS AND METHODS OF USE - The control systems and technique can regulate or control operations of a water treatment system in a primary control mode and, when appropriate, in a secondary or an alternate control mode. The primary control can represent a normal control mode during which the water treatment system is intended to operate. The alternate control mode can represent a second control or mode of operation. The systems can be operated to control or facilitate regulation, monitoring, and performance of one or more operating parameters of one or more water systems between, or to and from, a first mode, a second or alternate mode, and, in some cases, a third or even a fourth control mode. The change in control mode can be triggered by identifying one or more predetermined, pre-selected, and/or programmed conditions. | 10-02-2008 |
20080237149 | Algaecidal compositions for water treatment and method of use thereof - The invention includes compositions and a method of treating water to reduce algae in bodies of water, including decorative fountains, swimming pools, wastewater lagoons, storage reservoirs, and ornamental lakes and ponds, such as water features on golf courses. The composition includes a blend of two solid peroxygen compounds: sodium percarbonate and either sodium perborate tetrahydrate or sodium perborate monohydrate. An anticaking agent, such as calcium silicate may be added. The method includes administering the blend to the water by a variety of means, such as manual broadcasting or placing in a chemical feeding device. | 10-02-2008 |
20080264876 | Oxidation of Organic Compounds - An improved method and compositions for treating organic compounds present in soil, groundwater and other environments is disclosed. The method involves the use of a composition comprising a solid state, water soluble peroxygen compound and zero valent iron. | 10-30-2008 |
20080272063 | Ex Situ and in Situ Remediation with Activated Persulfate - The present invention relates to the in situ and ex situ oxidation of organic compounds in soils, sludges, ground-water, process water and wastewater and especially relates to the in situ oxidation of volatile and semi-volatile organic compounds, pesticides and herbicides, and other recalcitrant organic compounds, in soil and groundwater using percarbonate activated persulfate. | 11-06-2008 |
20080283472 | SUPERCRITICAL WATER OXIDATION APPARATUS AND PROCESS - A method for oxidizing an organic material includes the steps of (a) forming a preoxidation mixture comprising the organic material and water, and (b) causing the preoxidation mixture to react with a liquid oxidizer in a continuous flow reactor supercritical conditions for water, including a pressure of at least 3206 psia and a temperature of at least 705° F., to form a post-oxidation mixture containing condensible material and non-condensible material, wherein substantially all of the organic material has been oxidized. | 11-20-2008 |
20090145859 | METHODS FOR WASHING POULTRY DURING PROCESSING WITH MEDIUM CHAIN PEROXYCARBOXYLIC ACID COMPOSITIONS - The present invention relates to methods for reducing microbial contamination on poultry, or on surfaces used in processing poultry, employing compositions including medium chain peroxycarboxylic acid, and to the compositions. The methods include applying a medium chain peroxycarboxylic acid composition to poultry or to the surfaces. | 06-11-2009 |
20090194486 | Composition and method for reducing chemical oxygen demand in water - A method and composition for reducing chemical oxygen demand is presented. The composition includes a persulfate donor and a transition metal catalyst in contact with the persulfate donor. When the composition is contacted by water, the transition metal catalyst reacts with persulfate and reduces the persulfate concentration in the water. The composition allows the use of persulfate, which is known to cause irritation to users of aquatic facilities (e.g., pools, spas) that come in contact with it. As the persulfate concentration is reduced rapidly in the water by the catalyzed reaction, the persulfate-containing cleaning product may even be used while the aquatic facilities are being used. Optionally, a free halogen donor may be incorporated into the composition. The composition may be in the form of powder, granules (coated or uncoated), or agglomerate. | 08-06-2009 |
20100140186 | Acrylamide Removal from Aqueous Fluid Bodies - This invention is a method for removing acrylamide from large bodies of water or from other acrylamide-containing aqueous fluids. The acrylamide-containing water or aqueous fluid is treated with a peroxygen that is preferably persulfate, hydrogen peroxide or activated peracetic acid. The invention is particularly useful for treatment of acrylamide-containing aqueous fluids associated with oil and gas drilling and recovery applications and includes aqueous well treatment fluid compositions comprising an acrylamide-derived polymer and a peroxygen compound capable of generating free radicals, useful in slickwater well treatment applications. | 06-10-2010 |
20100181264 | Composition and method for reducing chemical oxygen demand in water - A method and composition for reducing chemical oxygen demand is presented. The composition includes a persulfate donor and a transition metal catalyst in contact with the persulfate donor. When the composition is contacted by water, the transition metal catalyst reacts with persulfate and reduces the persulfate concentration in the water. The composition allows the use of persulfate, which is known to cause irritation to users of aquatic facilities (e.g., pools, spas) that come in contact with it. As the persulfate concentration is reduced rapidly in the water by the catalyzed reaction, the persulfate-containing cleaning product may even be used while the aquatic facilities are being used. Optionally, a free halogen donor may be incorporated into the composition. The composition may be in the form of powder, granules (coated or uncoated), or agglomerate. | 07-22-2010 |
20110024367 | Cyclic process for in-situ generation of chlorine dioxide in biguanide treated aquatic facilities - A method for the in-situ generation of chlorine dioxide from dilute solutions of chlorite anions for the enhanced inactivation of microbiological organisms in an aqueous solution of an aquatic facility treated with biguanide. | 02-03-2011 |
20110100928 | PREPARATION AND USE OF NANO SIZE PEROXIDE PARTICLES - Nano-size particles of calcium dioxide and magnesium dioxide for remediation of contaminated water or soil and processes for preparing and using nano-size particles of calcium dioxide and magnesium dioxide. | 05-05-2011 |
20110192807 | METHOD, APPARATUS AND SYSTEMS FOR TREATING CONTAMINANTS IN A WASTE FLUID - The invention relates to a method, apparatus and system for the treatment of organic and inorganic waste in a waste fluid. The method involves a co-current plug flow of fluid in a reactor in which ozone mass transfer conforms to the effective life of the ozone used in the treatment. Hydroxide and hydrogen peroxide can be added to the waste fluid. The combined fluids to be treated travel the reactor through a series of surfaces in a packed reactor. The apparatus includes a diffuser for ozone which assists in the co-current plug flow of fluids. The diffuser can have a porosity of about 10 microns. The invention further envisions a compact system for efficient treatment of waste fluids. | 08-11-2011 |
20120031853 | OXIDATION OF ORGANIC CONTAMINANTS PRESENT IN WASTEWATER - A process for oxidizing a chemical contaminant selected from the group consisting of (i) aromatic compounds, (ii) unsaturated compounds having one or more of the following bonds: C═C, C≡C, C═O and C≡N, and (iii) amines, which process comprises combining the chemical contaminant and cuprous (Cu | 02-09-2012 |
20120080389 | SOx REMEDIATION IN MANUFACTURING OPERATIONS - Method for SOx remediation in a manufacturing operation includes providing a process stream including an organic compound and an amount of a sulfur-containing compound, an oxidation stream including at least one chemical oxidant, and combining at least a portion of the oxidant stream with at least a portion of the process stream to obtain an organic stripper feed stream, in which the amount of the sulfur-containing compound is reduced upon reaction with the at least one chemical oxidant. The method can further include directing at least a portion of the organic stripper feed stream to a combustion operation, and emitting a SOx remediated off gas from the combustion operation. A system using the disclosed method also is provided. | 04-05-2012 |
20120187051 | METHOD FOR THE OXIDATION OF ORGANIC COMPOUNDS - The disclosure relates to a method for oxidising one or more organic compounds, including placing the organic compounds in contact with at least one oxidising agent as well as with a catalyst agent including at least one source of divalent or trivalent transition metal ions and at least one poly-α-hydroxyacrylic acid and/or a poly-α-hydroxyacrylate. The disclosure can be used for removing pollutants from soils. | 07-26-2012 |
20120193302 | Process for Decontamination of Hazardous Sulfur Compounds in Sour Water Tanks - A method for decontaminating a liquid having sulfides includes preparing a stabilized sodium percarbonate solution. In an embodiment, the method includes decontaminating a liquid. The liquid comprises reactive sulfides. The method also includes preparing a stabilized sodium percarbonate solution, which includes adding sodium percarbonate to a liquid solution. The liquid solution comprises a peroxide stabilizer and an acid. The method further includes dosing the liquid into the stabilized sodium percarbonate solution to decontaminate the liquid by oxidizing at least a portion of the reactive sulfides. | 08-02-2012 |
20120305497 | Fenton and Fenton-Like System Hardening Agent and Usage Thereof - Fenton and Fenton-like system enhancing agent and the usage thereof are provided. It relates to a water treatment enhancer (enhancing agent) and the usage thereof. It widens water pH range of Fenton and Fenton-like system reaction. It reduces amount of Fe | 12-06-2012 |
20130087512 | Soil and Water Remediation Method and Apparatus - Disclosed is a method, apparatus and system for the remediation of contaminated soils, groundwater and water. A combination of reagents such as persulfate and ozone or persulfate, ozone and hydrogen peroxide may be used to enhance destruction of organic contaminants. Reagents may be injected into the smear zone to trap and destroy volatile compounds that may otherwise escape treatment. | 04-11-2013 |
20130126443 | CARBON SUPPORTED TETRAAMIDO MACROCYCLIC LIGAND CATALYTIC ACTIVATORS AND METHODS FOR MAKING THE SAME - Embodiments of the invention provide a tetraamido macrocyclic ligand catalytic activator bound to a carbon containing support. When combined with an oxidant, such as a peroxy compound, the carbon supported catalytic activator is a long-lived, robust oxidizing agent useful for oxidizing oxidizable compounds, such as aromatic groups, conjugated pi systems, natural and synthetic hormones, pesticides, pathogens, and dyes. | 05-23-2013 |
20130248462 | Selective Removal of Sulfide from Aqueous Alkali Solutions - A method for removing sulfide from an aqueous alkali solution in which hydrogen peroxide is introduced into a sulfide-containing aqueous alkali solution associated with an alkali mineral recovery operation. The method is particularly useful for the processing of sulfide-containing aqueous alkali solutions containing NaHCO | 09-26-2013 |
20130341289 | Method for Treating Waste Water - Waste household liquid containing solid fecal content so as to include potentially toxic bacterial content is collected in a septic tank and periodically discharged through a pipe where a quantity of hydrogen peroxide is injected into the pipe to be mixed with the waste liquid. The pipe carries the liquid to a centrifugal separator to separate the solid content from the liquid so that the solid content free from toxic bacterial content is collected and the waste liquid with the solid content removed is discharged for re-use or for disposal to the ground. | 12-26-2013 |
20140042105 | METHOD AND APPARATUS FOR PEROXONE ADVANCED OXIDATION IN WATER TREATMENT - A method of water treatment include mixing a hydrogen peroxide solution into a flow of water and subsequently mixing and dissolving ozone into the flow of water. The hydrogen peroxide solution may be conditioned with a water-soluble hydroxide salt. After the mixing and dissolving of the ozone into the flow of water, at least a portion of the hydrogen peroxide solution dissociates into hydroperoxide ions at a dissociation rate, the hydroperoxide ions react with the ozone to form hydroxyl radicals, and the hydroxyl radicals react with organic contaminants in the flow of water to remove the organic contaminants. The flow of water is then directed into a contact basin to facilitate the further decay of ozone. | 02-13-2014 |
20140091046 | Water Treatment Method by Catalyzing Ozone with a Persulfate - A water treatment method by catalyzing ozone with a persulfate comprises the following steps: introducing the ozone into an ozone contact reactor filled with water to be treated; at the same time putting the persulfate into the reactor, wherein a stirring state is kept in the water treatment process. The method solves the problems of difficulty in the ionization of hydrogen peroxide, low capability in inducing the decomposition of the ozone, high hydrogen peroxide residues and inconvenience of hydrogen peroxide transportation and storage existing in the conventional water treatment method for catalyzing the ozone by using the hydrogen peroxide. Hydroxyl radicals and sulfate free radicals with strong oxidizing properties, which are generated by catalyzing ozone with the persulfate, are oxidized to remove pollution, so that the method has the advantages of high catalytic capability, high oxidative degradation efficiency, wide pH application range, a small amount of catalyst residues, convenience of operation and the like, and can be applied in mass production. | 04-03-2014 |
20140246382 | Process for Decontamination of Hazardous Sulfur Compounds in Sour Water Tanks - A method for decontaminating a liquid having sulfides includes preparing a stabilized sodium percarbonate solution. In an embodiment, the method includes decontaminating a liquid. The liquid comprises reactive sulfides. The method also includes preparing a stabilized sodium percarbonate solution, which includes adding sodium percarbonate to a liquid solution. The liquid solution comprises a peroxide stabilizer and an acid. The method further includes dosing the liquid into the stabilized sodium percarbonate solution to decontaminate the liquid by oxidizing at least a portion of the reactive sulfides, wherein at least a portion of the reactive sulfides comprise solids. | 09-04-2014 |
20150315045 | APPARATUS FOR TREATING PHARMACEUTICAL WASTE - A compact system for treating pharmaceutical waste at a location at which the pharmaceutical waste is disposed includes a waste influent tank configured to hold and discharge a fluid containing pharmaceutical waste, a first container configured to hold and discharge hydrogen peroxide utilized in a chemical reaction to treat the pharmaceutical waste, a second container configured to hold and discharge aqueous iron solution utilized in a chemical reaction to treat the pharmaceutical waste, a neutralizer tank in which the chemical reaction is carried out, and a drain container configured to receive treated fluid. The system excludes a UV light source. | 11-05-2015 |
20150336825 | FENTON REACTOR AND METHOD FOR SEWAGE TREATMENT USING THE SAME - A Fenton reactor, including a body. The body includes: from the bottom up, a sewage introduction zone, a solid acid reaction zone, tubular ceramic membranes, and a water generation zone. A water feed pump, a first chemical feed pump, and a second chemical feed pump are disposed below the body. The outlets of the water feed pump, the first chemical feed pump, and the second chemical feed pump communicate with the water inlet of the body. The water feed pump, the first chemical feed pump, and the second chemical feed pump are provided with flow meters, respectively. The solid acid reaction zone is disposed above the sewage introduction zone, and the tubular ceramic membranes are disposed in the center of the solid acid reaction zone and separate the solid acid reaction zone to form a cavity. The water generation zone is disposed above the solid acid reaction zone. | 11-26-2015 |
20160068418 | METHOD FOR ENHANCING DEGRADATION OF CHLORINATED ORGANICS - A method for raising pH value to enhance degradation of chlorinated organics by oxidation may include steps of adding 1% persulfate and 20-100 g slag to 50 mg/L chlorinated organics; and utilizing slag to increase the pH to 12-13, and make persulfate alkali-activated to enhance the degradation of chlorinated organics and prevent heavy metal pollute the soil. | 03-10-2016 |
20160122210 | WATER SANITIZING SYSTEM WITH A HYDROLYSIS CELL AND OZONE GENERATOR - A water treatment system can include filtration and sanitizing equipment for maintaining proper water chemistries in a pool or other water feature. The water treatment system can include an ozone generator, a hydrolysis cell that hydrolyzes water having a minimum level of conductivity, and a pH regulator. Together, the ozone generator and the hydrolysis cell generate an array of different oxidizers and sanitizing agents that have varied half-lives. | 05-05-2016 |
20160200595 | STABLE PERCARBOXYLIC ACID COMPOSITIONS AND USES THEREOF | 07-14-2016 |
20160200605 | PROCESS FOR TREATMENT OF A FLUID COMPRISING AN OXIDIZABLE CONTAINMENT | 07-14-2016 |