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公开(公告)号：CA2033209C
公开(公告)日：2001-02-13
申请号：CA2033209
申请日：1990-05-24
Applicant: TORAY INDUSTRIES
Inventor： KUBO NAMI , NOYORI MASARU , MORI SHIGEKI , ITO TSUKASA
Abstract: This invention relates to a method for treating water by using a precoated filter. Since the method of the present invention utilizes ion-exchange fibers having an ion-exchange polymer and a reinforcing polymer as the precoating material together with a cation-exchange resin powder and an anion-exchange resin powder, the method made it possible to prominently prolong the lifetime of the precoating material and to improve the quality of the treated water. The method for treating water of the present invention is s~ited for the treatment of water to be used in, or waste eater from atomic power plants, steam power plants, pharmaceutical companies and the like.
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公开(公告)号：ES2050439T3
公开(公告)日：1994-05-16
申请号：ES90907488
申请日：1990-05-24
Applicant: TORAY INDUSTRIES
Inventor： KUBO NAMI , NOYORI MASARU , MORI SHIGEKI , ITO TSUKASA
Abstract: A method of treating water with a precoated filter, wherein powdered cation- and anion-exchange resins and an ion-exchange fiber composed of an ion-exchange polymer and a reinforcing fiber are used as the precoating material, thereby drastically prolonging the service life of the precoating material and improving the quality of treated water. This method is applicable to the treatment of industrial water to be used in and waste water discharged from nuclear and thermal power stations, pharmaceutical companies, and the like.
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公开(公告)号：DE69007027T2
公开(公告)日：1994-06-23
申请号：DE69007027
申请日：1990-05-24
Applicant: TORAY INDUSTRIES
Inventor： KUBO NAMI , NOYORI MASARU , MORI SHIGEKI , ITO TSUKASA
Abstract: A method of treating water with a precoated filter, wherein powdered cation- and anion-exchange resins and an ion-exchange fiber composed of an ion-exchange polymer and a reinforcing fiber are used as the precoating material, thereby drastically prolonging the service life of the precoating material and improving the quality of treated water. This method is applicable to the treatment of industrial water to be used in and waste water discharged from nuclear and thermal power stations, pharmaceutical companies, and the like.
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公开(公告)号：DE69007027D1
公开(公告)日：1994-04-07
申请号：DE69007027
申请日：1990-05-24
Applicant: TORAY INDUSTRIES
Inventor： KUBO NAMI , NOYORI MASARU , MORI SHIGEKI , ITO TSUKASA
Abstract: A method of treating water with a precoated filter, wherein powdered cation- and anion-exchange resins and an ion-exchange fiber composed of an ion-exchange polymer and a reinforcing fiber are used as the precoating material, thereby drastically prolonging the service life of the precoating material and improving the quality of treated water. This method is applicable to the treatment of industrial water to be used in and waste water discharged from nuclear and thermal power stations, pharmaceutical companies, and the like.
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公开(公告)号：CA2033209A1
公开(公告)日：1990-11-25
申请号：CA2033209
申请日：1990-05-24
Applicant: TORAY INDUSTRIES
Inventor： KUBO NAMI , NOYORI MASARU , MORI SHIGEKI , ITO TSUKASA
Abstract: This invention relates to a method for treating water by using a precoated filter. Since the method of the present invention utilizes ion-exchange fibers having an ion-exchange polymer and a reinforcing polymer as the precoating material together with a cation-exchange resin powder and an anion-exchange resin powder, the method made it possible to prominently prolong the lifetime of the precoating material and to improve the quality of the treated water. The method for treating water of the present invention is s~ited for the treatment of water to be used in, or waste eater from atomic power plants, steam power plants, pharmaceutical companies and the like.
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Patent Agency Ranking
公开(公告)号：JPS6312345A
公开(公告)日：1988-01-19
申请号：JP15398986
申请日：1986-07-02
Applicant: TORAY INDUSTRIES
Inventor： NOYORI MASARU , KUBO NAMI , YOSHIKAWA SEIICHI
Abstract: PURPOSE:To obtain the titled material capable of scavenging an iodine compd. which scavenges iodine and methyl iodide at the same time contd. in a gas or a liquor by binding silver to an ion exchange fiber. CONSTITUTION:The ion exchange fiber is introduced a cation exchange group such as sulfonic acid group, etc., and a chelate group such as aminocarboxylic acid group, etc., to a base polymer such as polystyrene, etc. The silver is binded to said ion exchange fiber by treating with an aqueous solution of silver nitrate in >=0.01M an concn. and in an amount of >=0.5 times equivalent per an ion exchange capacity of the ion exchange fiber. The amount of silver contd. in the on exchange fiber is >=0.1meq/g on the dry weight based on the on exchange fiber. The form of said fiber is preferably a staple having about 0.1-3mm length in the case of scavenging iodine. The sheet like material made by using the staple is preferable in the case of applying it in the gas. The obtd. scavenging material is effectively used to the recovery of iodine from a natural gas, etc., and the removal of a radioactive iodine compd. contg. in a waste gas and a waste liquor coming from an atomic energy plant.
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公开(公告)号：JPH0330891A
公开(公告)日：1991-02-08
申请号：JP16417789
申请日：1989-06-27
Applicant: TORAY INDUSTRIES
Inventor： KUBO NAMI , NOYORI MASARU , MORI SHIGEKI , ITO TSUKASA
Abstract: PURPOSE:To extend the filtering life of precoat to a large extent and to enhance the quality of treated water by using a powdery ion exchange resin and an ion exchange fiber as a precoat material and performing the coating operation of an element with the precoat material in parts before and during the treatment of raw water. CONSTITUTION:A powdery ion exchange resin and an ion exchange fiber are used as a precoat material and the precoating operation of an element with the precoat material is performed in parts before and during the treatment of raw water. The filter material precoated before the treatment of raw water collects impurities by internal filtration and, at the point of time when the internal filtration changes to surface filtration as impurities become a cake form with the advance of filtration, the filter material is further precoated with the new precoat material to perform internal filtration by a new precoat layer and, therefore, an internal filtration time can be effectively secured by the same amount of the precoat layer. Further, the life of the precoat material is extended by the mixing with the ion exchange fiber and the quality of treated water can be enhanced.
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公开(公告)号：JPS63156591A
公开(公告)日：1988-06-29
申请号：JP8760387
申请日：1987-04-09
Applicant: TORAY INDUSTRIES
Inventor： KUBO NAMI , YOSHIOKA TOSHIO , NOYORI MASARU
Abstract: PURPOSE:To improve the quality (more particularly total org. carbon value) of ultra-pure water to the present quality or above an to miniaturize a device, by treating raw water with an ion exchange body and active carbon, then treating the water with ion exchange fibers. CONSTITUTION:After the raw water is treated with the ion exchange body and active carbon, the water is treated with the ion exchange fibers. As a result, the ultra-pure water having >=18MOMEGA.cm specific electric resistance and
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公开(公告)号：JPS62210058A
公开(公告)日：1987-09-16
申请号：JP5337686
申请日：1986-03-11
Applicant: TORAY INDUSTRIES
Inventor： KUBO NAMI , YOSHIOKA TOSHIO , SAITO KOICHI , TOYAMA SHUNROKU
Abstract: PURPOSE:To refine a soln. with high accuracy by using a graft polymer subjected to a specific treatment as a cation exchanger and mixing the same with an anion exchanger. CONSTITUTION:The polymer prepd. by using a polyamide or polyester as a base body and grafting the same with a carboxyl group is used as the cation exchanger and is mixed with the anion exchanger to form an ion exchanger in the treatment and refining of liquid such as industrial water and waste water to be executed by using the ion exchanger. The cation exchanger permits an incinerationn treatment and can be easily provided with the form of fibers; in addition, the exchange capacity is increased by decreasing the moisture content and therefore, the easy liquid refining of the industrial water, waste water, etc., relating to nuclear power is executed with high accuracy.
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公开(公告)号：JPH03151050A
公开(公告)日：1991-06-27
申请号：JP28766489
申请日：1989-11-02
Applicant: TORAY INDUSTRIES
Inventor： NOYORI MASARU , KUBO NAMI , YOSHIOKA TOSHIO
Abstract: PURPOSE:To simultaneously capture anions and cations up to the extreme limit by molding the sheet-like material specified in metal content and METSUKE (unit) weight to a specific ratio of mixed fibers of >=2 kinds of cation exchange fibers, anion exchange fibers and chelate fibers. CONSTITUTION:The ion exchangeable sheet-like material is molded by using the mixed fibers of >=2 kinds of the cation exchange fibers, anion exchange fibers and chelate fibers. The values (20>=(a/b) and 0.0008W ) of the metal in the sheet, b denotes the METSUKE (unit) weight (g/m ) of the sheet; W denotes the METSUKE (unit) weight (g/m ) of the sheet-like material; H denotes the thickness (mm) of the sheet-like material; are required to be satisfied in this case. The sheet like material is preferably the sheet-like material formed by mixing and sheeting strongly acidic cation exchange fibers and strongly basic anion exchange fibers.
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