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公开(公告)号：EP4455096A1
公开(公告)日：2024-10-30
申请号：EP22911059.8
申请日：2022-12-15
摘要： Provided is a method for suppressing microorganism contamination in a water system that contains a reducing agent, the method being characterized in that a stabilized chlorine-based oxidizing agent comprising a chlorine-based oxidizing agent and a sulfamic acid compound, and/or a stabilized bromine-based oxidizing agent comprising a bromine-based oxidizing agent and a sulfamic acid compound is intermittently added to the water system so that the ratio of the time when the stabilized chlorine-based oxidizing agent and/or stabilized bromine-based oxidizing agent is not being added relative to the time when the same is being added of is 0.1 or more.
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2.发明授权
公开(公告)号：EP3470379B1
公开(公告)日：2024-01-17
申请号：EP18382721.1
申请日：2018-10-11
发明人： JUNYENT LLADÓ, Jordi
IPC分类号： C02F1/50 , C02F1/68 , C02F103/42 , C02F1/52 , C02F101/10
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公开(公告)号：EP4282515A1
公开(公告)日：2023-11-29
申请号：EP21921354.3
申请日：2021-12-24
发明人： OHTSUKA, Yuta , HAYAKAWA, Kunihiro , NAKAGAWA, Gou
摘要： The purpose of the present invention is to provide a technique whereby it becomes possible to operate for a longer period of time in an aqueous system equipped with a membrane separation apparatus. The present invention can provide a membrane separation method, the method comprising containing a combined-chlorine-based oxidizing agent to water of interest, and allowing the water of interest which contains the combined-chlorine-based oxidizing agent to pass through a membrane separation apparatus, in which the water of interest which contains the combined-chlorine-based oxidizing agent has a Free 300-second value of 0.036 mg/L-Ch or more wherein the Free 300-second value is a result of the measurement of a chlorine concentration after 300 seconds using a free chlorine measurement reagent.
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公开(公告)号：EP4223704A1
公开(公告)日：2023-08-09
申请号：EP22154683.1
申请日：2022-02-02
申请人： Grant Prideco, Inc.
IPC分类号： C02F1/467 , C02F1/461 , C09D5/16 , C09D5/24 , C09D7/61 , C09D7/40 , C02F103/08 , C02F103/10 , C02F103/36 , C02F1/50
摘要： There is disclosed an apparatus (100) for cleaning seawater, the apparatus (100) is configured to be positioned below the seawater surface and to take in surrounding seawater. The apparatus (100) comprises an electrolytic cell (10) comprising an anode and a cathode, wherein the cathode comprises a base material and a coating, the coating including a hydrolysable polymer and an electrically conductive agent. In a second aspect, the invention relates to a method for cleaning seawater for an injection into an injection well by means of an apparatus (100) according to the first aspect of the invention, the method including the steps of: placing the apparatus (100) under water in a stream of water to be cleaned; supplying power to the electrolytic cell (10) in order to generate an oxidating agent; letting the oxidating agent react with biologic material in the stream of water; injecting the cleaned water into an injection well.
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公开(公告)号：EP4206149A1
公开(公告)日：2023-07-05
申请号：EP22216979.9
申请日：2022-12-28
申请人： Sanipur S.p.A.
IPC分类号： C02F1/50 , C02F1/66 , C02F1/72 , C02F1/68 , C02F103/32 , C02F103/00 , C02F103/26
摘要： The present invention relates to a method of treating at least one surface, comprising a step in which said at least one surface is contacted with an aqueous solution obtained by mixing in water an aqueous formulation comprising at least one biosurfactant and at least one organic acid, wherein the weight ratio between said at least one biosurfactant and said at least one organic acid is between 1:1000 and 10:1, in an amount such that said aqueous solution comprises said at least one biosurfactant in an amount between 0.0001 and 10% by weight and said at least one organic acid in an amount between 0.001 and 10% by weight,
said at least one biosurfactant being selected from glycolipids, lipopeptides, lipoproteins, phospholipids and polymeric biosurfactants, and
said at least one organic acid being selected from citric acid, lactic acid, acetic acid, malic acid, maleic acid, formic acid, caprylic acid, methanesulfonic acid, tartaric acid, succinic acid, and polyaspartic acid.-
公开(公告)号：EP4162957A1
公开(公告)日：2023-04-12
申请号：EP21821626.5
申请日：2021-06-09
申请人： Mec Co., Ltd.
发明人： UEDA, Takao , SAKAI, Yozo
摘要： A drainage pipe disinfection apparatus and a drainage (wastewater) treatment system capable of effectively sterilizing and disinfecting drainage piping of sanitary equipment is provided. The disinfection apparatus for drainage piping of sanitary equipment comprises a cleansing tank, a toilet bowl which serves as the sanitary equipment, and a drainage pipe connected to the toilet bowl, wherein when the sanitary equipment is used, a fixed amount of cleansing water is supplied to the toilet bowl from the cleansing tank, and the cleansing water after cleansing the toilet bowl is drained from the drainage pipe; wherein the disinfection apparatus for drainage piping of sanitary equipment further comprises: replenishment piping configured to replenish, from a water supply system, a fixed amount of water corresponding to the amount of cleansing water supplied from the cleansing tank to the toilet bowl; a sensor configured to sense the supply of water to the cleansing tank; a chemical liquid tank configured to store a fixed concentration of chlorine dioxide; a chemical liquid pump configured to supply a fixed amount of chemical liquid from the chemical liquid tank to the cleansing tank; and a control unit configured to operate the chemical liquid pump by means of a water supply sensing signal from the sensor to supply a fixed amount of chlorine dioxide to the cleansing tank, thereby maintaining the concentration of chlorine dioxide in the cleansing water within the cleansing tank at a fixed concentration.
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公开(公告)号：EP4130378A1
公开(公告)日：2023-02-08
申请号：EP21807989.5
申请日：2021-03-12
发明人： KATSURA, Hiroki
摘要： The present invention provides a method for suppressing generation of hydrogen sulfide that can indirectly and preliminarily know the sign of the generation of the hydrogen sulfide in a water tank arranged in a water system of a papermaking equipment, and can effectively suppress the generation of the hydrogen sulfide without excessively adding a treatment agent for treating water (white water) in the water tank. A method for suppressing generation of hydrogen sulfide in a water tank of the present invention includes the steps of: periodically measuring a concentration of a reducing substance serving as a generation source for hydrogen sulfide in water in a water tank arranged in a water system of a papermaking equipment; and performing a predetermined treatment such that the concentration of the reducing substance in the water in the water tank is equal to or less than a reference value when the concentration of the reducing substance is greater than the reference value.
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公开(公告)号：EP3697212B1
公开(公告)日：2023-01-18
申请号：EP18867756.1
申请日：2018-10-12
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公开(公告)号：EP3363288B1
公开(公告)日：2022-09-07
申请号：EP16855619.9
申请日：2016-08-18
发明人： CHO, Hoon , YU, Sun Jong , BAEK, Seung Ho , CHA, Hyung Joon
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公开(公告)号：EP3281916B1
公开(公告)日：2022-08-31
申请号：EP17189134.4
申请日：2006-01-18
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