Kurita Water Industries, Ltd. Patent applications |
Patent application number | Title | Published |
20160047730 | PARTICULATE-MEASURING METHOD, PARTICULATE-MEASURING SYSTEM, AND SYSTEM FOR MANUFACTURING ULTRAPURE WATER - An object of the invention is to provide a technology that can timely collects particulates in sample water even when abnormality is observed in the result obtained by a measurement unit for measuring particulates in sample water. Provided is a particulate-measuring method comprising filtering sample water continuously, even when a measurement unit for measuring particulates in sample water and a filtration unit of filtering the sample water and collecting the particulates for analysis by direct microscopic method are both in operation and abnormality is observed in the result obtained by the measurement unit. | 02-18-2016 |
20160016122 | METHOD FOR OPERATING REVERSE OSMOSIS MEMBRANE DEVICE, AND REVERSE OSMOSIS MEMBRANE DEVICE - Provide is a reverse osmosis membrane device that is capable of treating raw water containing membrane-fouling substance in large quantities, such as MBR-treated water, in a stable manner while preventing decreases in permeate flow rate, and a method for operating thereof. A method for operating a reverse osmosis membrane device that treats raw water containing high-molecular-weight organic matter, wherein the raw water contains high-molecular-weight organic matter having a molecular weight of 10,000 or more at a concentration of 0.01 ppm or more, wherein the reverse osmosis membrane device is equipped with a spiral-type reverse osmosis membrane element that has a membrane surface area satisfying the below formula (1), and wherein the reverse osmosis membrane device is operated at a permeate flux of 0.6 m/d or less: | 01-21-2016 |
20150362436 | METHOD FOR MEASURING CONCENTRATION OF DISSOLVED SUBSTANCE - A reagent includes a coloring agent allowing a measured solution to develop a color transmitting a region component light for a dissolved-substance concentration measurement selected from three region component lights of red, green, and blue obtained by transmitting a light including a visible light region to the measured solution colored by addition of the reagent to the sample, and dividing a light of the visible light region of a transmitted light thereof into roughly three portions. Based on the transmitted light from the measured solution with the coloring agent added, an absorbance of the region component light for the dissolved-substance concentration measurement, and an absorbance A | 12-17-2015 |
20150353401 | WATER RECOVERY SYSTEM FOR USE IN CONFINED SPACES - A water recovery system can treat water in a confined space. The wastewater treatment system includes a cation-exchange device in which water to be treated, such as wastewater originating in a space station, water discharged by the human body, water produced by condensing water vapor contained in the air, is directly introduced to a cation-exchange resin and thereby treated by cation exchange; a diamond-electrode electrolysis device in which organic substances, urea, and other nitrogen compounds contained in water discharged from the cation-exchange device are decomposed; a catalytic decomposition device in which the residual organic component is brought into contact with a catalyst to be decomposed; an electrodialysis device in which water discharged from the catalytic decomposition device is treated by electrodialysis to produce desalted water as well as an acid and an alkali; and a mineral adding device in which a mineral is added to the desalted water. | 12-10-2015 |
20150336813 | ULTRAPURE WATER PRODUCTING APPARATUS - Provided is an ultrapure water producing apparatus equipped with fewer reverse osmosis membrane separation units. The ultrapure water producing apparatus includes a primary water purification system | 11-26-2015 |
20150322629 | PITCH INHIBITOR, PITCH INHIBITION METHOD, AND PROCESS FOR PRODUCING DEINKED PULP - Provided are a pitch-formation suppressor and the like which can be widely applied independently of the substance that causes a pitch and of the situation to generate a pitch in a paper manufacturing process, and which can effectively suppress and prevent the troubles due to the pitch, such as foreign spots and defects in a paper, breakage of a paper, and lowering of workability. This pitch-formation suppressor comprises an alkaline solution in which a phenol resin and/or a modified phenol resin is dissolved, or an acid solution in which a phenol resin and/or a modified phenol resin is dissolved. | 11-12-2015 |
20150320082 | METHOD FOR PRODUCING FEED ADDITIVE RAW MATERIAL - Provided is a method for producing a feed additive raw material that can be used as a raw material of a feed additive for improving the palatability of feed and is capable of stably culturing animalcules containing a large amount of amino acids. A method for producing a feed additive raw material, comprising: a first biological treatment step of preparing a first biologically treated liquid containing dispersible bacteria by introducing an organic wastewater containing 40 wt % or more of protein to a first biological treatment tank and performing aerobic biological treatment with bacteria; a second biological treatment step of preparing a second biologically treated liquid by introducing the first biologically treated liquid to a second biological treatment tank and performing activated sludge treatment; and a sludge separation step of taking out part of the tank sludge from the second biological treatment tank as the feed additive raw material. | 11-12-2015 |
20150316486 | METHOD FOR AUTOMATICALLY MEASURING CONCENTRATION OF DISSOLVED SUBSTANCE - In measuring a dissolved substance, a concentration of a specific dissolved substance in a sample water is measured using a measuring water W | 11-05-2015 |
20150307819 | SUBSTRATE CLEANING LIQUID AND SUBSTRATE CLEANING METHOD - In order to selectively further etch silicon nitride by a cleaning liquid in cleaning of a substrate having silicon nitride and silicon oxide on the substrate, a cleaning liquid for use in cleaning of a substrate having silicon nitride and silicon oxide on the same substrate, at least a portion of one or both of the silicon nitride and the silicon oxide being exposed on the substrate, including phosphoric acid, electrolytic sulfuric acid produced by electrolysis and including persulfuric acid suitably having a concentration of 1.0 g/L to 8.0 g/L, and water is suitably brought into contact with the substrate at 165° C. or higher and lower than a boiling point to selectively etch the silicon nitride on the substrate, thereby effectively etching the silicon nitride while etching of silicon oxide is suppressed to favorably clean a semiconductor substrate high in degree of integration having a pattern line width of 37 nm or less. | 10-29-2015 |
20150303053 | METHOD FOR PRODUCING OZONE GAS-DISSOLVED WATER AND METHOD FOR CLEANING ELECTRONIC MATERIAL - A method for producing ozone gas-dissolved water includes a process in which a mixed gas of an ozone gas and an oxygen gas and degassed water are supplied to an ozone-dissolving section and the mixed gas is dissolved in the degassed water. The amount of the mixed gas supplied to the ozone-dissolving section is controlled such that the sum of the dissolved oxygen gas concentration of the degassed water and the increment of the dissolved oxygen gas concentration calculated from the amount of the oxygen gas in the mixed gas and the amount of the degassed water on the assumption that ozone in the mixed gas entirely decomposes into oxygen is less than or equal to the saturated solubility of the oxygen gas under conditions using the obtained ozone gas-dissolved water. | 10-22-2015 |
20150298028 | SETTLING TANK AND METHOD OF OPERATING THE SAME - In a settling tank of the invention, treated water has good quality and whose operation is stable over a long period. A settling tank includes a tank body having a circular-cylindrical shape whose axial direction corresponds to the vertical direction, a distributor provided in a lower part (near the bottom) of the tank body, an outlet provided in a middle part or a part slightly above the middle part of a side face of the tank body, a receiving tank communicating with the tank body via the outlet, a stirring device provided in the tank body, a trough for extracting treated water provided in an upper part of the tank body, a sludge discharge port through which concentrated sludge is extracted from a lower part of the receiving tank, and so forth. A stirring member is provided below the distributor. | 10-22-2015 |
20150279703 | Semiconductor Substrate Cleaning Method and Cleaning System - A method and system for cleaning a semiconductor substrate in which Al is at least partially exposed on a silicon substrate and which is silicided with a metallic substance, without damaging Al and a silicide layer, comprising a cleaning portion ( | 10-01-2015 |
20150262811 | METHOD AND SYSTEM FOR CLEANING SEMICONDUCTOR SUBSTRATE - A cleaning method including a persulphuric acid producing step of causing a cleaning sulfuric acid solution to travel into an electrolyzing section and to circulate therethrough to produce persulphuric acid having a predetermined concentration by electrolysis in the electrolyzing section, a solution mixing step of mixing the sulfuric acid solution containing the persulphuric acid produced in the persulphuric acid producing step with a halide solution containing one or more types of halide ion without causing the solutions to travel into the electrolyzing section to produce a mixed solution having a post-mixture concentration of oxidant including the persulphuric acid that ranges from 0.001 to 2 mol/L, a heating step of heating the mixed solution, and a cleaning step of cleaning a semiconductor substrate by transporting the heated mixed solution to cause the heated mixed solution to come into contact with the semiconductor substrate. | 09-17-2015 |
20150255822 | MICROBIAL POWER GENERATOR - The power generation efficiency of a microbial power generator is increased by using an easy and inexpensive unit. Two plate-like cation-exchange membranes are disposed in parallel in a tank. This arrangement allows an anode chamber to be formed between the cation-exchange membranes. Two cathode chambers are separated from the anode chamber by using the respective ion-permeable nonconductive membranes. An oxygen-containing gas is made to pass through the cathode chamber. An anode solution is supplied to the anode chamber, and, preferably, the anode solution is made to circulate. A biologically treated exhaust gas is used as the oxygen-containing gas to be supplied to the cathode chamber. Carbon dioxide in the biologically treated exhaust gas can promote transport of Na | 09-10-2015 |
20150246827 | DEVICE FOR TREATING FLUORINE-CONTAINING WATER - A device for treating fluorine-containing water includes a fluorine treating unit treating the fluorine-containing water in which calcium carbonate packed towers are arranged in series in a plurality of stages; a fluorine passing unit passing the fluorine-containing water through the fluorine treating unit; an extracting unit extracting treated water from the fluorine treating unit; and a recovery unit recovering calcium fluoride from the calcium carbonate packed towers. | 09-03-2015 |
20150081227 | REMOTE MONITORING DEVICE FOR BALLAST WATER TREATMENT SYSTEM AND REMOTE MONITORING METHOD - A state of a ballast water treatment system of a ship detected by a variety of sensors is monitored by transmitting it to a control means provided with a data storage/transmission means. The control means transmits from a satellite communication means to a satellite communication means on the receiving side via a communication satellite, and a host computer receives it. The host computer analyzes and monitors information from the various sensors S | 03-19-2015 |
20150045276 | AGENT AND METHOD FOR CLEANING PERMEABLE MEMBRANES - The invention provides cleaning agents, cleaning liquids and cleaning methods that effectively remove contaminants which are impossible to remove sufficiently with conventional cleaning liquids at the occurrence of a decrease in performances such as permeation flux and salt rejection rate due to contamination of permeable membranes, in particular aromatic polyamide RO membranes used in water treatment. Permeable membranes are cleaned with a cleaning liquid which is an aqueous solution including a chloramine compound and an alkali agent and having a pH of 10 or above. The chloramine compound is preferably one obtained by mixing a compound having a primary amino group with hypochlorous acid and/or a hypochlorite. | 02-12-2015 |
20140346111 | SEAWATER TREATMENT METHOD - In a seawater treatment method in which after seawater is coagulated by a coagulant and is processed by a solid-liquid separation treatment, an RO treatment is performed, RO feed water having a good water quality is obtained by a small addition amount of the coagulant, and by the RO treatment of the RO feed water, a stable RO treatment can be performed over a long period of time. In a seawater treatment method which is a pretreatment method performed prior to a membrane separation treatment of seawater, after a cationic organic flocculant and/or an inorganic coagulant is added to seawater to conduct a reaction, a coagulation treatment is performed by addition of an alkaline solution of a high molecular weight compound which has a phenolic hydroxide and which is insolubilized under a high salt concentration, and a solid-liquid separation treatment is then performed. Subsequently, this treated water is desalinated by a membrane separation treatment. | 11-27-2014 |
20140302167 | SHIPS' BALLAST WATER TREATMENT AGENT AND TREATMENT METHOD OF SHIPS' BALLAST WATER USING THE SAME - A ships' ballast water treatment agent is obtained by blending phosphate and sodium hydroxide into a hypochlorite solution and has pH of 10 to 13. A blending amount of phosphate is preferably such that a weight ratio of effective chlorine to phosphate acid (PO | 10-09-2014 |
20140273173 | METHOD OF SEPARATING AND RECOVERING MICROALGAE - Raw water containing microalgae is introduced to a pH adjusting aggregation tank, and a soluble metal salt for generating a hardly-soluble hydroxide is added for adjusting to a predetermined pH. Subsequently, microalgae is aggregated by a precipitated hardly-soluble hydroxide, and generated aggregated flocks are separated to aggregated flocks and treated water in a solid-liquid separation tank. According to the method of separating and recovering microalgae, microalgae can be recovered from a culture solution containing microalgae without using a flocculant containing aluminum or poisonous macromolecule polymer, etc. and used as a feed additive or food additive. | 09-18-2014 |
20140116464 | METHOD FOR CLEANING METAL GATE SEMICONDUCTOR - Provided is a method for cleaning a metal gate semiconductor, by which a resist adhering to a semiconductor can be effectively stripped while etching of metal gates is suppressed. The method includes an ashing step (step s | 05-01-2014 |
20140079377 | LIQUID HEATER - The invention is directed to a liquid heater for rapidly heating a liquid without overheating the liquid. The liquid heater comprises a liquid flow channel having a passage through which liquid flows, a heating part disposed outside the liquid flow channel, a heat reflecting part facing a heat radiating side of the heating part, and a cooling part through which a cooling medium flows adjacent a reverse side of a reflecting surface of the heat reflecting part for cooling the heat reflecting part. Radiant heat not absorbed in the liquid is reflected by the heat reflecting part. The heat reflecting part reflects radiant heat cooled by the cooling part so that the body of the liquid heater and peripheral members are maintained at a temperature not higher than a predetermined temperature to prevent overheating the liquid. | 03-20-2014 |
20140029924 | LIQUID HEATING METHOD, LIQUID HEATING APPARATUS, AND HEATED LIQUID SUPPLYING APPARATUS - A liquid heating method and apparatus including a heat device | 01-30-2014 |
20140017120 | METHOD OF USING AN AMINE COMPOUND AS ANTICORROSIVE FOR A BOILER - The method of using an amine compound represented by the formula NH | 01-16-2014 |
20130341263 | DESALTING DEVICE - Provided is a desalting device which includes a tower body and a bulge portion bulging downward therefrom, and which prevents uneven flow and causes no dead space within the tower body. The desalting device includes a tower body having a bulge portion | 12-26-2013 |
20130324678 | METHOD FOR IMPROVING REJECTION OF PERMEABLE MEMBRANE, TREATMENT AGENT FOR IMPROVING REJECTION, AND PERMEABLE MEMBRANE - Provide is a method capable of effectively improving a rejection of a permeable membrane without remarkably reducing a permeation flux, even if the membrane is seriously degraded. The method for improving a rejection of a permeable membrane supplies an aqueous solution (excluding an aqueous solution having a pH of 7 or less) containing a compound having an amino group and a molecular weight of 1,000 or less through the permeable membrane (amino-treatment step). Since the low molecular weight amino compound is supplied through the permeable membrane, degraded portions of the membrane can be restored without remarkably reducing the permeation flux thereof, and the rejection thereof can be effectively improved. | 12-05-2013 |
20130324664 | METHOD FOR IMPROVING REJECTION OF REVERSE OSMOSIS MEMBRANE, TREATMENT AGENT FOR IMPROVING REJECTION, AND REVERSE OSMOSIS MEMBRANE - A method capable of effectively improving a rejection of a reverse osmosis membrane without remarkably reducing a permeation flux, even if the membrane is seriously degraded. An aqueous solution containing a first organic compound having a molecular weight of less than 200, a second organic compound having a molecular weight of 200 to less than 500, and a third organic compound having a molecular weight of 500 or more is passed through the reverse osmosis membrane. The first organic compound is preferably an amino acid or an amino acid derivative. The total concentration of the first organic compound and the second organic compound and the concentration of the third organic compound are each preferably 1 to 500 mg/L. | 12-05-2013 |
20130319875 | SULFURIC ACID ELECTROLYSIS METHOD AND SULFURIC ACID ELECTROLYSIS APPARATUS - An electrolysis apparatus comprising: an electrolytic cell in which a sulfuric acid solution is fed and discharged; a conductive anode and cathode electrode of diamond composition; a feeding unit for feeding the sulfuric acid solution to the electrolytic cell; a power supply unit for applying a voltage between the anode and cathode electrodes; and a power control unit for controlling the power supply unit such that a forward voltage is applied between the anode and cathode during normal electrolysis with the polarity applied between the anode and cathode inverted under predetermined conditions during intervals between normal operation to dissolve precipitates of sulfur generated in the electrolytic cell for stabilizing the electrolysis operation. | 12-05-2013 |
20130292330 | ULTRAPURE WATER PRODUCING METHOD - In an ultrapure water producing method, a pre-treatment system treats raw water supplied from a raw water storage tank. A heat exchanger adjusts the treated water to a predetermined temperature before the water is supplied to a first bio-treatment means which is further connected to a second bio-treatment means. The second bio-treatment means is connected to a microbial body separation apparatus and, after treatments are performed in those apparatuses, the result is supplied as treated water to a primary pure water apparatus. Before the second bio-treatment means, a second supply mechanism is provided for adding a nitride source as a nutrient source and oxidizing agent (bactericidal agent). According to the ultrapure water producing method, urea in raw water can be removed to a high degree. | 11-07-2013 |
20130291891 | METHOD FOR CLEANING SILICON WAFER AND APPARATUS FOR CLEANING SILICON WAFER - A silicon wafer after being cleaned by using a cleaning liquid is rinsed by using carbonic water. According to such a silicon wafer cleaning method, generation of static due to a rinsing treatment is not caused, so that an electrostatic breakdown is not caused, adhesion of dirt to a cleaned silicon wafer surface due to the static is not caused, adhesion of metal impurities can be prevented in the rinsing treatment of the silicon wafer and, while giving consideration to the cost, furthermore, a rinsing treatment using a clean rinsing liquid free from causing any residue can be performed. | 11-07-2013 |
20130256226 | METHOD AND APPARATUS FOR TREATING ORGANIC WASTEWATER - [Object] In relation to the treatment of organic wastewater in which organic wastewater is separated from biosludge by solid liquid separation using a separation membrane and the permeate water is subjected to RO membrane separation treatment and further in which normal solid liquid separation treatment is suspended and the membrane is cleaned by passing a cleaning liquid through the membrane from the permeate water side to the concentrated water side, the invention prevents a decrease in the flux of RO membranes due to TOC components eluted from the sludge during membrane cleaning and thereby reduces the frequency of chemical cleaning of the RO membranes as well as increases water recovery rate, thus allowing the treatment to be performed stably and efficiently. | 10-03-2013 |
20130206176 | Cleaning system and cleaning method - Provided is a cleaning system including an electrolysis unit that electrolyses a sulphuric acid solution, thereby generating persulphuric acid, an electrolytic solution storage unit that stores the electrolyzed sulphuric acid solution, a first circulation line that circulates the sulphuric acid solution between the electrolysis unit and the electrolytic solution storage unit, a cleaning device that cleans a material subject to cleaning by using the sulphuric acid solution containing the persulphuric acid, a heating unit that heats the sulphuric acid solution used for the cleaning device, a waste liquid storage unit that stores the sulphuric acid solution used by the cleaning device, a second circulation line that transports the sulphuric acid solution electrolyzed by the electrolysis unit via the heating unit to the cleaning device, and circulates the sulphuric acid solution used by the cleaning device for the cleaning via the waste liquid storage unit, and a third circulation line that transports the sulphuric acid solution electrolyzed by the electrolysis unit to the waste liquid storage unit without passing the sulphuric acid solution through the cleaning device, thereby circulating the sulphuric acid solution. | 08-15-2013 |
20130171483 | BATTERY AND BATTERY SYSTEM - [PROBLEM] In space-conservative fashion, at low cost, and with high efficiency, to carry out absorption of gas produced at the interior of a battery. | 07-04-2013 |
20130105389 | WATER TREATMENT METHOD AND ULTRAPURE WATER PRODUCTION METHOD | 05-02-2013 |
20130092553 | SUPPLY SYSTEM AND SUPPLY METHOD FOR FUNCTIONAL SOLUTION - Provided are an electrolyzing unit (electrolyzing device | 04-18-2013 |
20130068260 | METHOD OF CLEANING ELECTRONIC MATERIAL AND CLEANING SYSTEM - An electronic material cleaning system includes a chemical cleaning means, a wet cleaning means and a single-wafer cleaning apparatus. The chemical cleaning means comprises a functional chemical storage tank and an electrolytic reaction apparatus connected to the functional chemical storage tank via a concentrated sulfuric acid electrolysis line. The functional chemical storage tank can supply a functional chemical to the single-wafer cleaning apparatus via a functional chemical supply line. The wet cleaning means comprises a pure water supply line, a nitrogen gas supply line connected to a nitrogen gas source and an internal mixing type two-fluid nozzle connected respectively to the pure water supply line and the nitrogen gas supply line. Droplets generated from a nitrogen gas and ultrapure water can be sprayed from the tip of the two-fluid nozzle. | 03-21-2013 |
20130032532 | WATER TREATMENT METHOD AND METHOD FOR PRODUCING ULTRAPURE WATER - A water treatment method and a method for producing ultrapure water are provided in which urea in raw water is sufficiently decomposed, and an organism (bacterial cells) in biological treatment is prevented from flowing downstream. In a water treatment method for performing biological treatment of raw water containing urea, a carbon source is added to the raw water, and the raw water is then supplied to biological treatment means | 02-07-2013 |
20130026097 | COMBINED CHLORINE AGENT AND PRODUCTION AND USE THEREOF - A combined chlorine agent having a low concentration of free chlorine and a high concentration of combined chlorine whereby combined chlorine concentration of water can be heightened when added to water systems at a low concentration of free chlorine, methods of efficient production and chlorine treatment at low free chlorine concentration are provided. The combined chlorine agent consists of an aqueous agent which comprises alkali consisting of alkali metal hydroxide, sulfamic acid, and oxidizing agent based on chlorine, wherein the composition ratio of the oxidizing agent based on chlorine to the sulfamic acid is in the range from 0.45 to 0.6 by Cl/N (mole ratio), the composition ratio of the oxidizing agent based on chlorine to alkali is in the range from 0.3 to 0.4 by Cl/alkali metal (mole ratio), and free chlorine concentration in the aqueous agent is 2% by weight or lower of total chlorine concentration. | 01-31-2013 |
20130008788 | METHOD AND APPARATUS FOR ELECTRICAL TREATMENT, AND ANODE USED FOR THE SAME - To provide an anode which can prevent scale from being deposited on the contact surface of the anode with materials to be processed, an apparatus including the anode for electrical treatment, and a method for electrical treatment using the apparatus. An endless conveyor belt | 01-10-2013 |
20120325927 | CLEANING METHOD - Disclosed is a low-cost and resource-saving cleaning method wherein high cleaning effects are obtained by high-pressure jet cleaning or two-fluid cleaning using a gas-dissolved water. In the high-pressure jet cleaning method or the two-fluid cleaning method, a cleaning liquid or a mixed fluid of the cleaning liquid and a gas is jetted from a cleaning fluid jetting nozzle toward a subject to be cleaned, and the subject is cleaned. The cleaning liquid introduced into the cleaning fluid jetting nozzle contains the dissolved gas in a quantity equal to or more than the saturation solubility at the liquid temperature of the cleaning liquid. | 12-27-2012 |
20120305489 | METHOD AND APPARATUS FOR TREATING SELENIUM-CONTAINING WATER - Selenium-containing water containing ions of a metal which is nobler than titanium and which is a coexisting substance is stably and efficiently treated. A pretreatment of removing ions of the metal nobler than titanium from the selenium-containing water is performed prior to the reduction treatment of selenium with the mixture of metallic titanium and the simple metal baser than titanium. In a reduction treatment step of selenium, noble metal ions in the selenium-containing water are reduced on the surfaces of particles of metallic titanium in a titanium/base metal mixture to form precipitates, which adhere to the surfaces of the metallic titanium particles, resulting in the decrease in efficiency of a reduction reaction. This problem can be solved in such a manner that the noble metal ions are removed prior to the reduction treatment of selenium. | 12-06-2012 |
20120305468 | WATER TREATMENT APPARATUS - A water treatment apparatus includes: a mixing element having a mixing tank in which water is mixed with a flocculant added thereto; a flocculation element having a cylindrical flocculation tank into which the water discharged from the mixing element is introduced, and in which the water is kept unexposed to the atmosphere, a for-treatment water inlet which introduces the water to be treated into the flocculation tank from a lower part of the flocculation tank in a tangential direction so as to produce a swirl flow, and a for-treatment water outlet discharging the water to be treated from the upper part of the flocculation tank; and a solid-liquid separation element into which the water to be treated after discharge from the flocculation element is introduced from the flocculation element without being exposed to the atmosphere, and in which the water to be treated is subjected to solid-liquid separation. | 12-06-2012 |
20120298570 | FILTRATION APPARATUS AND WATER TREATMENT APPARATUS - A filtration apparatus | 11-29-2012 |
20120291806 | CLEANING SYSTEM AND CLEANING METHOD - Provided are a system and method capable of providing a sulfuric acid solution containing peroxosulfuric acid for use in cleaning even in an installation-limited space such as a clean room while suppressing the fluid pressure in a heating part such as a rapid heating heater. | 11-22-2012 |
20120279928 | METHOD AND DEVICE FOR TREATING FLUORINE-CONTAINING WATER - A high percentage of fluorine in fluorine-containing water is removed and high purity calcium fluoride is recovered when treating the fluorine-containing water by passing the same through calcium carbonate packed towers provided in series in a plurality of stages, preferably two stages. In a method including passing fluorine-containing water through calcium carbonate packed towers provided in series in a plurality of stages to remove the fluorine in the fluorine-containing water and recover calcium fluoride, the calcium carbonate towers are packed with calcium carbonate with a volume mean diameter of 30 to 150 μm. By the use of calcium carbonate granules with a volume mean diameter of 30 to 150 μm, an increase in the purity of the recovered calcium fluoride and an increase in the fluorine removal ratio can be realized with a relatively small device. | 11-08-2012 |
20120255911 | METHOD FOR MANUFACTURING ANION EXCHANGE RESIN, ANION EXCHANGE RESIN, METHOD FOR MANUFACTURING CATION EXCHANGE RESIN, CATION EXCHANGE RESIN, MIXED BED RESIN, AND METHOD FOR MANUFACTURING ULTRAPURE WATER FOR WASHING ELECTRONIC COMPONENT MATERIAL - The invention relates to a method for manufacturing an anion exchange resin, wherein the method includes the step of contacting a water soluble polymer containing an anionic dissociative group with a resin to produce an anion exchange resin. In the method, an amount of contact of the water soluble polymer is 0.01 to 10 mmol/L, in terms of an amount of the anionic dissociative group, relative to 1 liter of the anion exchange resin, and a wafer surface flatness (Rms) of the anion exchange resin is 4 Å or less, determined by a silicon wafer test. | 10-11-2012 |
20120241377 | WATER TREATMENT METHOD AND WATER TREATMENT FLOCCULANT - There is provided a water treatment method using a water treatment flocculant that suffers from minimal secondary contamination with flocculation residues and contains an alkaline solution of a phenolic resin. A water treatment method involving the addition of a flocculant to water to be treated and subsequent membrane separation treatment. The flocculant contains an alkaline solution of a phenolic resin having a melting point in the range of 130° C. to 220° C. The water treatment flocculant is produced by a resole-type second-order reaction in the presence of an alkaline catalyst in which an aldehyde is added to an alkali solution of a novolak phenolic resin. The novolak phenolic resin is produced by a reaction between a phenol and an aldehyde in the presence of an acid catalyst. | 09-27-2012 |
20120228233 | APPARATUS AND METHOD FOR FLUID MIXING - There is provided an apparatus and method for fluid mixing, which enable mixing efficiency to be enhanced and enable a lodging impurity to be easily removed. A liquid, powder, or the like is added from a pipe | 09-13-2012 |
20120220674 | METHOD FOR MANUFACTURING ANION EXCHANGE RESIN, ANION EXCHANGE RESIN, METHOD FOR MANUFACTURING CATION EXCHANGE RESIN, CATION EXCHANGE RESIN, MIXED BED RESIN, AND METHOD FOR MANUFACTURING ULTRAPURE WATER FOR WASHING ELECTRONIC COMPONENT MATERIAL - This invention relates to a method for manufacturing a cation exchange resin, wherein the method includes the steps of: copolymerizing a monovinyl aromatic monomer and a cross-linkable aromatic monomer to obtain a cross-linked copolymer; specifying a content of a leachable compound represented by formula (I) to be 400 μg or less relative to 1 g of the cross-linked copolymer, | 08-30-2012 |
20120217162 | APPARATUS AND METHOD FOR TREATING NITROGEN COMPOUND-CONTAINING ACIDIC LIQUID - A nitrogen compound-containing acidic liquid such as a monoethanolamine-containing dilute hydrochloric acid waste liquid discharged during the regeneration of condensate demineralizers in nuclear power plants or thermal power plants is efficiently and economically treated. A neutralization dialysis device | 08-30-2012 |
20120172273 | WAFER WASHING WATER AND WAFER WASHING METHOD - The invention provides a wafer washing technique which does not require complicated operations and by which a wafer is washed with ultrapure water through relatively simple operations without contaminating the wafer surface with metals even if the ultrapure water contains metal ions on the ng/L (ppt) level. Wafer washing water includes ultrapure water to which a substance having an affinity for metal ions has been added. A wafer washing method uses this wafer washing water. A substance that exhibits an affinity for metal ions is added beforehand to wafer washing ultrapure water. As a result, the substance captures metal ions present in the ultrapure water and stabilizes them in water, thereby effectively preventing the metal ions from migrating toward the wafer surface and becoming attached to the wafer surface during washing. | 07-05-2012 |
20120168370 | METHOD OF IMPROVING REJECTION OF PERMEABLE MEMBRANE AND PERMEABLE MEMBRANE - Provided is a method capable of effectively improving the rejection of a membrane without considerably lowering the permeation flux, even when the membrane has significantly degraded. The method of improving the rejection of a permeable membrane includes a step (amino treatment step) of passing an aqueous solution (amino treatment water) having a pH of 7 or less and containing an amino group-containing compound having a molecular weight of 1000 or less through the permeable membrane. After this amino treatment step, water having a higher pH than the amino treatment water is allowed to pass through the permeable membrane. Thus, by allowing the low-molecular-weight amino compound to pass through the membrane, a degraded portion of the membrane can be restored without considerably lowering the permeation flux of this permeable membrane, and the rejection can be effectively improved. | 07-05-2012 |
20120160768 | ORGANIC-WASTEWATER TREATMENT METHOD AND ORGANIC-WASTEWATER TREATMENT APPARATUS - By adding an iron salt, the sedimentation property, the concentration property, and the filtration property of sludge in an activated-sludge mixed liquor in a biological treatment tank are effectively improved and treated water of high quality is efficiently provided. When an iron salt such as ferrous chloride, ferric chloride, or polyferric sulfate is added to organic wastewater and the organic wastewater is biologically treated, the iron salt is added to the organic wastewater and mixing is conducted; and the water mixture is mixed with activated sludge and biologically treated. By mixing organic wastewater and an iron salt at a pH close to an optimum pH for ferric hydroxide in advance, the turbidity of the treated water due to the formation of iron oxide or ferrous carbonate is suppressed. | 06-28-2012 |
20120152837 | BIOLOGICAL TREATMENT METHOD OF ORGANIC-MATTER-CONTAINING WATER - Provided is a biological treatment method of organic-matter-containing water in which a decrease in the permeation flux of a membrane in a membrane-separation activated-sludge process can be effectively suppressed. A biological treatment method of organic-matter-containing water includes introducing organic-matter-containing water containing organic matter into a biological treatment tank, mixing the organic-matter-containing water with activated sludge, biologically treating the organic-matter-containing water, and subjecting a mixed liquor of the organic-matter-containing water and the activated sludge to membrane separation, wherein an iron salt and a phenolic resin are added to the raw water. Substances (for example, metabolites of activated-sludge organisms) that cause a decrease in the permeation flux of a separation membrane become insoluble due to the flocculating effect by the iron salt and bonding with the phenolic resin. | 06-21-2012 |
20120097595 | DEVICE FOR TREATING HYDROGEN PEROXIDE WATER - The present invention provides a device for treating hydrogen peroxide water, the device being capable of carrying out continuous operation and stable efficient treatment even for drainage containing relatively highly concentrated hydrogen peroxide on the order of several percent and the device having a simple configuration and a relatively compact size. There is provided a device for treating hydrogen peroxide water, including: an inlet for water to be treated; an outlet for treated water; a hydrogen peroxide decomposition reactor | 04-26-2012 |
20120067380 | CLEANING LIQUID, CLEANING METHOD, LIQUID GENERATING APPARATUS, EXPOSURE APPARATUS, AND DEVICE FABRICATING METHOD - An exposure apparatus exposes a substrate through an exposure liquid with exposure light. A cleaning liquid is provided to the exposure apparatus, in order to clean at least part of the exposure apparatus. In the cleaning liquid, a prescribed gas of an amount that is greater than or equal to the saturation concentration is dissolved. | 03-22-2012 |
20120022192 | INHIBITOR AND METHOD FOR PREVENTING SILICA-BASED SCALE - Provided are a water-treating agent which includes a specific nonionic polymer and a phosphorus compound and can exhibit the ability to inhibit the deposition of silica-based scale under wide ranges of water quality conditions and temperature conditions; and a method of treating water. The inhibitor for silica-based scale includes a nonionic polymer and a phosphorus compound, the nonionic polymer being: a polymer formed by the reaction of an unsaturated double bond and including units derived from at least one monomer selected from the group consisting of (meth)acrylamide, N-substituted (meth)acrylamide and N-vinyl lactam; and/or one or more polymers having an ether group and selected from the group consisting of alkyl alcohol/polyalkylene oxide adducts, aliphatic monocarboxylic acid/polyalkylene oxide adducts, and polyvinyl alcohol/polyalkylene oxide adducts. | 01-26-2012 |
20120012134 | METHOD FOR CLEANING ELECTRONIC MATERIAL AND DEVICE FOR CLEANING ELECTRONIC MATERIAL - A resist on an electronic material is surely separated and removed in a short time. The electronic material is cleaned with a sulfuric acid solution containing persulfuric acid to separate and clean the resist, and thereafter wet cleaning is performed with gas dissolved water. By using gas dissolved water for performing wet cleaning after the resist separation with the sulfuric acid solution containing persulfuric acid, the time required for cleaning can be sharply reduced as compared with that of a former method. The sulfuric acid solution containing persulfuric acid is preferably one produced by electrolyzing a sulfuric acid solution. A sulfuric acid solution which is discharged from a resist separation and cleaning device and in which the persulfuric acid concentration has decreased is supplied to an electrolytic reactor for regeneration, and then the sulfuric acid solution, in which the persulfuric acid concentration has been sufficiently increased, is circulated to the cleaning device, whereby the resist can be efficiently separated and removed with the high-concentration persulfuric acid and the repeated use of the sulfuric acid can be achieved. | 01-19-2012 |
20120006790 | Apparatus and method for treating etching solution - An apparatus and method for treating an etching solution, where the replacement frequency of the etching solution is reduced, while the inclusion of impurities in the treated etching solution is prevented. An apparatus for treating an etching solution in order to reuse the etching solution used in etching treatment of silicon, where the apparatus includes: membrane separation means | 01-12-2012 |
20120006755 | PROCESS FOR TREATMENT OF WATER CONTAINING AZOLE-TYPE ANTICORROSIVE FOR COPPER - Provided is a process for efficiently removing an azole-type anticorrosive for copper from water containing the azole-type anticorrosive for copper, such as wastewater discharged from a CMP step in a fabrication process of a semiconductor device. Ferrous ions are added to water containing an azole-type anticorrosive for copper, and a resulting insoluble iron-azole complex is separated. After the insoluble iron-azole complex is separated, the remaining TOC components are subjected to ozonolysis. The azole-type anticorrosive for copper can be efficiently insolubilized in the form of an iron-azole complex using ferrous ions, and flocculation/solid-liquid separation can be performed. The water after removal of the insoluble matter formed by the addition of ferrous ions is water from which not only the azole-type anticorrosive for copper but also suspended solids have been removed. Therefore, when an ozone-based advanced oxidation process is performed, ozone can be prevented from being wasted, and TOC components including the remaining azole-type anticorrosive for copper can be decomposed and removed to a high degree by injection of a small amount of ozone. | 01-12-2012 |
20110305839 | OZONE GAS TREATMENT PROCESS AND TREATMENT APPARATUS - A process for treating the surface of a resin substrate with an ozone gas by bringing the ozone gas into contact with the surface includes the steps of: generating an ozone gas; humidifying the generated ozone gas; and exposing the surface of the resin substrate to the humidified ozone gas. | 12-15-2011 |
20110297614 | SLIME-CONTROLLING AGENT FOR ACTIVATED CARBON, METHOD FOR PASSING WATER THROUGH ACTIVATED CARBON DEVICE, AND METHOD AND APPARATUS FOR TREATING ORGANIC-MATTER-CONTAINING WATER - Disclosed is a treatment apparatus capable of inhibiting growth of microorganisms and carrying out long-term stable treatment in an activated carbon tower and a reverse osmosis membrane separation device during processes including activated carbon treatment and RO membrane separation treatment of a later step in a system for manufacturing ultrapure water used in an electronic device factory. A method for treating organic-matter-containing water includes: the slime-controlling-agent-adding step of adding a slime-controlling agent to organic-matter-containing water; the activated-carbon-treating step of treating with activated carbon the organic-matter-containing water having undergone the slime-controlling-agent-adding step; and the reverse-osmosis-membrane-separation step of passing the organic-matter-containing water having undergone the activated-carbon-treating step through means for reverse osmosis membrane separation, wherein the slime-controlling agent uses a combined chlorine agent produced from a chlorine-based oxidizer and a sulfamic acid compound. | 12-08-2011 |
20110278222 | ULTRAPURE WATER PRODUCTION METHOD AN APPARATUS THEREFOR - Ultrapure water of high purity having extremely low TOC concentration is produced by efficiently degrading urea in raw water by biological activated carbon treatment even when the raw water contains ammonium nitrogen. The ultrapure water production method, where raw water is treated in a primary pure water system, and then the resulting water is treated in a subsystem, contains a step of treating pretreated water with chlorine based oxidizer added by a biological treatment means installed upstream to the subsystem. Chlorine based oxidizer is added so that the chlorine based oxidizer concentration is 5 times or more than the ammonium nitrogen concentration of water treated in the biological treatment means in terms of Cl | 11-17-2011 |
20110256427 | METHOD FOR MICROBIALLY GENERATING ELECTRICITY AND MICROBIAL POWER GENERATOR - To increase the power generation efficiency of a microbial power generator by using an easy and inexpensive unit. Two plate-like cation-exchange membranes | 10-20-2011 |
20110247929 | DIAMOND ELECTRODE AND METHOD FOR MANUFACTURING DIAMOND ELECTRODE - A diamond electrode having an oxidation resistant diamond film which will not separate from the electrode during electrolysis with highly oxidizing materials. The thickness of the diamond film is 20 pm or more and the diamond film should preferably cover opposite side surfaces of a substrate in such a manner as to also cover end surfaces | 10-13-2011 |
20110210072 | Pure Water Manufacturing Method And Pure Water Manufacturing Apparatus - In production of ultrapure water by purifying primary pure water with a secondary pure water manufacturing apparatus and a tertiary pure water manufacturing apparatus, high-purity ultrapure water is produced, wherein generation of hydrogen peroxide is minimized and the concentrations of TOC, DO, and hydrogen peroxide are reduced to the limit. In an ultrapure water manufacturing system, each of the secondary pure water manufacturing apparatus and the tertiary pure water manufacturing apparatus includes an ultraviolet oxidation device and a deionization device, downstream therefrom, by using an ion exchange resin. UV light control is performed in such a way that the hydrogen peroxide concentration results in 1 to 30 μg/L and the TOC concentration results in 1 to 10 μg/L at the outlet of the ultraviolet oxidation apparatus of the secondary pure water manufacturing apparatus and, in addition, the TOC concentration results in 0.1 to 5 μg/L at the outlet of the ultraviolet oxidation apparatus of the tertiary pure water manufacturing apparatus. UV light control is performed in such a way that the TOC concentration results in 1 to 10 μg/L at the outlet of the ultraviolet oxidation apparatus of the secondary pure water manufacturing apparatus and, in addition, the hydrogen peroxide concentration results in 1 to 20 μg/L and the TOC concentration results in 0.1 to 5 μg/L at the outlet of the ultraviolet oxidation apparatus of the tertiary pure water manufacturing apparatus. | 09-01-2011 |
20110203977 | FILTRATION APPARATUS AND WATER TREATMENT APPARATUS - The filtration apparatus of the invention includes a filtration member | 08-25-2011 |
20110200847 | MICROBIAL POWER GENERATION METHOD AND MICROBIAL POWER GENERATION DEVICE - Power generation efficiency of a microbial power generation device is improved by a simple and inexpensive means. Two plate-shaped cation-exchange membranes | 08-18-2011 |
20110180491 | METHOD AND APPARATUS FOR TREATING ORGANIC MATTER-CONTAINING WATER - Raw water is made to pass through a raw water supply pipe | 07-28-2011 |
20110120857 | FUNCTIONAL SOLUTION SUPPLY SYSTEM - A sulfuric acid electrolyte is produced efficiently as a functional solution and persulfuric acid produced by electrolysis is supplied efficiently to a use side while suppressing self-decomposition thereof. | 05-26-2011 |
20110094963 | MEMBRANE SEPARATION METHOD AND MEMBRANE SEPARATION DEVICE - To provide a membrane separation method capable of attaining reduced adsorption of a membrane-fouling substance contained in treatment water onto the surface of a separation membrane during membrane separation of the treatment water, to thereby lead retarded deterioration in membrane separation performance, and a membrane separation apparatus for performing the method. In the membrane separation method, to treatment water, a particulate cationic polymer which swells in water but does not substantially dissolve therein is added, and the treatment water is subjected to membrane separation. | 04-28-2011 |
20110042281 | GAS-DISSOLVED WATER SUPPLY SYSTEM - Provided is a gas-dissolved water supply system that can efficiently produce highly concentrated gas-dissolved water and can circulate and supply the water to a use point. To a storage tank 1, waste water (cleaning waste water) that is water containing dissolved gas (oxygen) used for cleaning an object to be cleaned is reserved through piping | 02-24-2011 |
20110030722 | CLEANING WATER FOR ELECTRONIC MATERIAL, METHOD FOR CLEANING ELECTRONIC MATERIAL AND SYSTEM FOR SUPPLYING WATER CONTAINING DISSOLVED GAS - Cleaning water for an electronic material which exhibits a remarkably improved cleaning effect in comparison with conventional waters containing dissolved gas is provided. The cleaning water for an electronic material comprises water containing dissolved gas containing oxygen and argon as dissolved gases, and has a concentration of dissolved oxygen being equal to or more than 8 mg/L, and a content of dissolved argon gas being equal to or more than 2 volume % of the total amount of dissolved oxygen gas and dissolved argon gas. A method for cleaning an electronic material with the cleaning water for an electronic material. The cleaning water for an electronic material of the present invention, which comprises water containing dissolved oxygen/argon gas, contains a smaller amount of dissolved gas, can obtain an improved cleaning effect even when a small amount of a chemical is used, and therefore, can be produced safely and easily at a low cost. | 02-10-2011 |
20110011792 | POLYMER FIBER MATERIAL, METHOD OF PRODUCING THE SAME, AND FILTER FOR FILTERING FLUID - There is provided a hybrid polymer fiber material containing a non-electrolytic polymer and an electrolytic polymer and having properties and advantages of both polymers, and provided a method of producing the hybrid polymer fiber material, and provided a filter made of the hybrid polymer fiber material. A voltage is applied between a nozzle | 01-20-2011 |
20100330397 | Microbial power generation device - A microbial power generation device includes an anode chamber which maintains a microbe and which is supplied with influent which includes an electron donor, a cathode chamber supplied with an electron acceptor, a nonconductive membrane having a first face and an opposing second face and arranged between the anode chamber and the cathode chamber, a first electro-conductive support material having a rough surface which has asperity spreading close to the first face of the nonconductive membrane, and formed by a porous material having approximately the same shape as the interior of the anode chamber, and arranged within the anode chamber, and a second electro-conductive support material having a rough surface which has asperity spreading close to the second face of the nonconductive membrane. | 12-30-2010 |
20100288308 | METHOD AND SYSTEM FOR PRODUCING ULTRAPURE WATER, AND METHOD AND SYSTEM FOR WASHING ELECTRONIC COMPONENT MEMBERS - An ultrapure water production system that can stably produce ultrapure water having a boron concentration of 1 ng/L or less or a metal concentration of 0.1 ng/L or less, a method for producing ultrapure water using the ultrapure water production system, and a method and a system for washing electronic component members. In an ultrapure water production system that includes a mixed-bed deionization apparatus | 11-18-2010 |
20100240535 | BACTERICIDAL/ALGICIDAL METHOD - The invention provides a bactericidal/algicidal method including adding an oxidant-based bactericidal/algicidal agent and a stabilizer therefor to a target water system, characterized in that the amount of combined chlorine or the stabilizer in the water system is controlled by generating free residual chlorine in the water system, and a bactericidal/algicidal method including adding an oxidant-based bactericidal/algicidal agent and a stabilizer therefor to a target water system, characterized in that the amount of the oxidant-based bactericidal/algicidal agent added is controlled so that the concentration of total residual chlorine in the water system falls within a predetermined range, and the amount of combined chlorine or the stabilizer is controlled so that the concentration of free residual chlorine in the water system falls within a predetermined range. | 09-23-2010 |
20100230350 | Method and apparatus for treating selenium-containing wastewater - A method and an apparatus for treating selenium-containing wastewater, in which wastewater containing hexavalent selenium is subjected to reduction treatment, selenium can be effectively removed at a small amount of metal leached, and, preferably, sludge produced during treatment is white, thereby facilitating the disposal of the sludge. The selenium-containing wastewater is brought into contact with an alloy or a mixture of metallic titanium and a first metal other than metallic titanium to partially leach the first metal, thereby subjecting selenium in the wastewater to reduction treatment. | 09-16-2010 |
20100206809 | METHOD AND APPARATUS FOR TREATING ORGANIC MATTER-CONTAINING WATER - There are provided a method and an apparatus for treating organic matter-containing water, the method and apparatus being capable of inhibiting the multiplication of microorganisms in an activated carbon column and a reverse osmosis membrane separator and performing stable treatment over long periods of time in a process including active carbon treatment and subsequent RO membrane separation treatment with an ultrapure water production system for use in electronic device manufacturing plants. The method for treating organic matter-containing water includes an oxidizer addition step of adding an oxidizer to organic matter-containing water, an activated carbon treatment step of treating the organic matter-containing water that has been subjected to the oxidizer addition step with activated carbon, and a reverse osmosis membrane separation step of feeding the organic matter-containing water that has been subjected to the activated carbon treatment step into a reverse osmosis separation means, in which a combined-chlorine-based oxidizer is used as the oxidizer. | 08-19-2010 |
20100187103 | Ion-permeable diaphragm - An ion-permeable diaphragm comprises a membrane material containing a calcium phosphate compound or calcium fluoride as a hydrophilic inorganic material. The calcium phosphate compound is preferably fluoroapatite or hydroxyapatite. The membrane material is obtained by incorporating a stretched organic fiber fabric into a membrane-forming mixture formed by the hydrophilic inorganic material and an organic binding material selected from among polysulfone, polypropylene, polyvinylidene fluoride or the like. As a result, there can be provided an ion-permeable membrane of low electric resistance for use in alkaline water electrolysis devices. | 07-29-2010 |
20100167158 | METHOD FOR PRODUCING A SOLID FUEL FOR FUEL CELLS, SOLID FUEL FOR FUEL CELLS, AND FUEL CELL - An object of the present invention is to provide a method for producing a highly safe solid fuel for fuel cells having excellent handleability, a highly safe solid fuel for fuel cells having excellent handleability, and a fuel cell using such a solid fuel for fuel cells. In a method for producing a solid fuel for fuel cells in which a coating film is formed on the surface of a porous material containing a fuel for fuel cells, the coating film is formed by polyvinyl alcohol, and the fuel for fuel cells is introduced into the porous material before and/or after formation of the coating film on the surface of the porous material. | 07-01-2010 |
20100133180 | Anaerobic treatment method and anaerobic treatment apparatus - A method and apparatus of anaerobic treatment which makes it possible to prevent disintegration of granular sludge and perform high-load high-velocity anaerobic treatment stably even in the case where treatment is performed under conditions where the granular sludge is easily disintegrated. In a reaction tank | 06-03-2010 |
20100130626 | METHOD FOR MANUFACTURING ANION EXCHANGE RESIN, ANION EXCHANGE RESIN, METHOD FOR MANUFACTURING CATION EXCHANGE RESIN, CATION EXCHANGE RESIN, MIXED BED RESIN, AND METHOD FOR MANUFACTURING ULTRAPURE WATER FOR WASHING ELECTRONIC COMPONENT MATERIAL - A method for manufacturing an anion exchange resin, in which remaining of impurities and generation of decomposition products are suppressed and leachables are reduced, the method including the following steps (1-a) to (1-e) of: (1-a) obtaining a cross-linked copolymer by copolymerizing a monovinyl aromatic monomer and a cross-linkable aromatic monomer; (1-b) specifying the content of a specific leachable compound to be 400 μg or less relative to | 05-27-2010 |
20100098995 | Direct methanol fuel cell system and portable electronic device - A fuel cell comprises a fuel electrode, an electrolyte membrane and an air electrode | 04-22-2010 |
20100092827 | DIRECT METHANOL FUEL CELL SYSTEM USING SOLID METHANOL, PORTABLE ELECTRONIC DEVICE USING SAME, AND FUEL CARTRIDGE FOR DIRECT METHANOL FUEL CELL SYSTEM - A fuel cartridge has a pair of flat faces in which holes are formed. A net is stretched within the holes, and solid methanol is packed inside the fuel cartridge. A fuel cell unit, shaped as a flat box, comprises a pair of flat wall portions, a pair of long-side wall portions, and a pair of short-side wall portions. Each flat wall portion is provided with two MEAs, as fuel cells that are arranged so that the fuel electrodes (not shown) face inward. One of the long-side wall portions has an opening provided with, on the edge thereof, an elastic packing serving as a sealing member. An opening and closing lid is pivotably provided to the opening by a pivot as a pivot member. The resulting reduced size methanol fuel cell system has sufficient air-tightness and good power generation efficiency, and is simple in structure. | 04-15-2010 |
20100068596 | Direct methanol fuel cell system and portable electronic device - A direct methanol fuel cell system comprises a fuel storage portion that stores solid-state methanol resulting from making methanol into a solid state, a fuel cell, and carrier gas circulation means. The fuel storage portion is provided with a carrier gas supply path communicating with the carrier gas circulation means and a fuel gas flow path 4 communicating with a fuel electrode side of the fuel cell, while the fuel cell is provided with a circulation flow path communicating with the carrier gas circulation means. When a carrier gas is supplied by the carrier gas circulation means into the fuel storage portion via the carrier gas supply path, a fuel gas is supplied to a fuel electrode and is refluxed thereafter towards the carrier gas circulation means. The resulting direct methanol fuel cell system uses extremely safe solid-state methanol in a fuel cartridge. | 03-18-2010 |
20100044311 | METHOD AND APPARATUS FOR FURTHER PURIFYING ULTRAPURE WATER - Disclosed are a method for further purifying ultrapure water, according to which any impurities in ultrapure water can be stably removed to a high degree within a small space over a prolonged period; and an apparatus therefor. Ultrapure water introduced into an ultrapure-water purifying apparatus | 02-25-2010 |
20100032387 | CLEANING AND STERILIZING METHOD FOR ULTRAPURE WATER MANUFACTURING SYSTEM - In a method of cleaning and sterilizing an ultrapure water manufacturing system including an ultrapure water manufacturing apparatus, a point of use of ultrapure water, and an ultrapure water channel connecting the ultrapure water manufacturing apparatus and the point of use, a cleaning and sterilizing process including an alkali cleaning step for cleaning at least part of the inside of the system with alkaline solution and a sterilizing step for sterilizing the system with sterile water after the alkali cleaning is treated twice or more. By treating the cleaning and sterilizing process twice or more, metals, organic substances, particles, and bacteria inside the ultrapure water manufacturing system can be highly efficiently removed, and thereby ultrapure water satisfying required water quality can be produced within a short period of time after the cleaning and sterilizing. | 02-11-2010 |
20100025329 | METHOD FOR TREATMENT WITH REVERSE OSMOSIS MEMBRANE - A method for treatment with a reverse osmosis membrane to reduce decrease in flux that occurs even under the conditions that water supplied to a reverse osmosis membrane treatment apparatus contains only a trace amount of iron and that the formation of scales of substances such as calcium and silica is prohibited. A method for performing a treatment with a reverse osmosis membrane to treat raw water containing iron at 1000 μg/L or less as total iron with a reverse osmosis membrane, including a step of adding a compound having a sulfo group to the raw water. | 02-04-2010 |
20090283471 | Apparatus and Method for Treating Organic-Containing Wastewater - In treating organic-containing wastewater by a biological treatment in a stage prior to a advanced treatment such as membrane separation or the like, the amount of the biological metabolites produced in the biological treatment step is reduced to reduce the amount of the organic substances flowing into the advanced treatment step in a latter stage, thereby making the advanced treatment stable and efficient and efficiently recovering treated water of high quality. Water anaerobically biologically treated in an anaerobic reaction tank | 11-19-2009 |
20090277832 | Method for biological disposal of organic wastewater and biological disposal apparatus - A biological treatment method and device for organic wastewater, whereby the amount of minute organisms which reduce the amount of excess sludge and held within an activated sludge tank can be stabilized so that the treatment can be stabilized, are provided. Substrates for growing dispersed bacteria and/or dispersed bacteria are supplied to a sludge treatment tank | 11-12-2009 |
20090165829 | Process for Producing Gas-Containing Cleaning Water, Apparatus for Producing the Cleaning Water and Cleaning Apparatus - A process for producing a gas-containing cleaning water which contains a specific gas dissolved in water, which process comprises dissolving the specific gas into water under an increased pressure exceeding an atmospheric pressure to prepare a gas-containing water having a concentration of the gas exceeding solubility of the gas under an atmospheric pressure and, then, removing a portion of the dissolved gas by decreasing pressure on the gas-containing water; an apparatus for producing a gas-containing cleaning water which comprises an apparatus for dissolving a gas ( | 07-02-2009 |
20090165370 | Method for Producing a Solid Fuel for Fuel Cells, Method for Controlling Vaporization of a Fuel for Fuel Cells, Solid Fuel for Fuel Cells, and Fuel Cell - A solid fuel for fuel cells is produced by introducing a fuel for fuel cells into a porous material, molding an obtained fuel-carrying material to a predetermined shape and forming a coating film on the surface of an obtained molded fuel-carrying material. Further, a solid fuel for fuel cells is produced by introducing water and a fuel for fuel cells into a porous material, molding an obtained fuel-carrying material to a predetermined shape and forming a coating film on the surface of an obtained molded fuel-carrying material. A solid fuel for fuel cells excellent in handleability can be produced thereby, while the safety of the fuel for fuel cells is improved by controlling the vaporization of the fuel for fuel cells. | 07-02-2009 |
20090095674 | Method and eqipment for biological treatment of organic wastewater - A method of biological treatment of organic wastewater includes a biological treatment step for introducing organic wastewater to a biological treatment tank and biologically treating the organic wastewater; and a solid-liquid separation step for separating biologically treated liquid in the biological treatment tank into sludge and treated water. The method further includes a sludge treatment step for introducing a portion of the sludge in the biological treatment tank and/or at least a portion of the sludge separated in the solid-liquid separation step into a sludge treatment tank having a submerged filter element with a pore diameter of 5 to 100 μm in the tank and subjecting the sludge to aerobic biological treatment; and a permeated liquid-returning step for returning the liquid permeated through the submerged filter element to the biological treatment tank. | 04-16-2009 |
20090078909 | Method for storing hydrogen - An object is to provide a method for storing hydrogen that allows hydrogen to be easily stored and easily released, and the method comprises cooling a liquid mixture of a carbon compound capable of forming a molecular compound and a protic polar solvent while bringing hydrogen into contact with the liquid mixture, to form thereby a solid substance having hydrogen enclosed therein; as a result, the carbon compound capable of forming a molecular compound becomes caged in a clathrate that does not readily enclose hydrogen, unless under ultrahigh pressure; the carbon compound forms a molecular compound with the hydrogen, while a clathrate capable of enclosing the hydrogen therein under high-pressure conditions also forms a hydrogen clathrate, thereby allowing to increase hydrogen storage density; and the hydrogen can be stored thus by maintaining the state of the solid substance, and can be easily extracted by simply dissolving the solid substance in water. | 03-26-2009 |
20090032466 | Agent for Increasing Rejection with a Permeable Membrane, Process for Increasing the Rejection, Permeable Membrane and Process for Water Treatment - An agent for increasing the rejection with a permeable membrane which comprises an ionic macromolecule having a weight-average molecular weight of 100,000 or greater; a process for increasing the rejection with a permeable membrane which comprises treating a permeable membrane with the agent; a permeable membrane which is treated in accordance with the process; and a process for water treatment which comprises using the permeable membrane are disclosed. By using the above agent, an increased rejection of inorganic electrolytes and organic compounds soluble in water can be maintained for a long time easily and safely at the location of the use of the membrane without extreme decrease in the flux of permeation in the membrane separation using a selective permeable membrane such as a nano filtration membrane and a reverse osmosis membrane. | 02-05-2009 |
20090014028 | METHOD OF CLEANING SUBSTRATES AND SUBSTRATE CLEANER - There is provided a method of efficiently cleaning substrates without damaging a fine pattern formed thereon. It is a method of cleaning one or more substrates in a system processing one or more substrates as one batch by dipping one or more substrates as one batch, including the steps of: immersing one or more substrates as one batch in a wet etching solution; ultrasonically cleaning one or more substrates as one batch; and drying one or more substrates as one batch. The step of ultrasonically cleaning employs a cleaning solution having a gas dissolved therein to have a degree of saturation of 60% to 100% at an atmospheric pressure, and an ultrasonic wave having a frequency of at least 500 kHz and an energy of 0.02 W/cm | 01-15-2009 |
20080251108 | Sulfuric Acid Recycling Type Cleaning System and a Sulfuric Acid Recycling Type Persulfuric Acid Supply Apparatus - If incorporated in a cleaning system using persulfuric acid, the invention serves for continuous cleaning while increasing the persulfuric acid concentration adequately to ensure enhanced cleaning performance. The invention provides a feeding apparatus that feeds persulfuric acid to a cleaning apparatus. The cleaning system uses an electrolysis reactor | 10-16-2008 |
20080233438 | Fuel for fuel cell, fuel cell and application thereof - A fuel cell fuel contains an organic fuel used as a fuel for a fuel cell. The organic fuel is in a form of a solid molecular compound, such as an inclusion compound. The molecular compound can be prepared by contact catalytic reaction of a compound for forming the molecular compound and the organic fuel, and allows a liquid organic fuel to be in a solid compound to store the organic fuel stably in a relatively lightweight form. The molecular compound easily releases the organic fuel by, for example, heating, and the organic fuel is supplied to the fuel electrode of a fuel cell. Thus, the handleability of the fuel cell fuel containing the organic fuel can be improved, and the problems of corrosion, freezing of the fuel, crossover, and so forth can be solved. | 09-25-2008 |