公开(公告)号：JP4031789B2

公开(公告)日：2008-01-09

申请号：JP2004339423

申请日：2004-11-24

申请人： Agcエンジニアリング株式会社 ,  東レ株式会社 ,  高知県

发明人： 敦 吉村 ,  義文 山▲崎▼ ,  弘之 山村 ,  浩久 川北 ,  洋 戸田 ,  和秀 浜田 ,  良雄 菅家 ,  隆 隅田 ,  良輔 青木

IPC分类号： C02F1/469 ,  A23L1/304 ,  A23L2/38 ,  A23L2/52 ,  B01D61/02 ,  B01D61/44 ,  B01D61/58 ,  C02F1/44 ,  C05D3/00 ,  C05D5/00 ,  C05D11/00

CPC分类号： Y02A20/131 ,  Y02A20/134

摘要： PROBLEM TO BE SOLVED: To provide a mineral liquid manufacturing method for obtaining, from sea water without heating it, mineral liquid having a sufficiently high concentration of mineral component such as magnesium and calcium and having a satisfactorily reduced sodium concentration. SOLUTION: The high-concentration mineral liquid manufacturing method comprises: a step (I) of separating sea water into concentrate (A1) and membrane permeate (A2) by treating sea water with a reverse osmosis membrane; a step (II) of obtaining concentrate (B1) in which cation concentration and monovalent anion concentration are high and bivalent or more anion concentration is low by treating the concentrate (A1) with an electrodialyzer constituted by disposing a pair of monovalent anion selective permeable anion exchange membrane and cation exchange membrane between anode and cathode; and a step (III) of obtaining concentrate (C1) as high-concentration mineral liquid in which bivalent or more cation concentration is high and monovalent cation concentration is low by treating the concentrate (B1) with an electrodialyzer constituted by disposing a pair of monovalent cation selective permeable cation exchange membrane and anion exchange membrane between anode and cathode. COPYRIGHT: (C)2006,JPO&NCIPI

公开(公告)号：JP3963304B2

公开(公告)日：2007-08-22

申请号：JP2001113660

申请日：2001-04-12

申请人： 東レ株式会社

发明人： 勝之助 前田 ,  弘之 山村 ,  優 栗原

IPC分类号： B01D61/12 ,  B01D61/02 ,  B01D61/06 ,  B01D61/58 ,  C02F1/44

CPC分类号： Y02A20/131

摘要： PROBLEM TO BE SOLVED: To provide a separation method capable of more stably obtaining a low concentration solution from a high concentration solution in high yield, with less energy, at a lower cost, and with high efficiency. SOLUTION: This is the reverse osmosis separation method % which the reverse osmosis membrane module units arranged at multi-stages are used and concentrated water in a module unit at the front stage is raised in pressure and fed to the reverse osmosis membrane module at the subsequent stage, and in the membrane surface flow speeds of the concentrated water of the reverse membrane modules at the respective stages, a concentrated water membrane surface flow speed (a maximum concentrated water membrane surface flow speed) of the module unit having the highest membrane surface flow speed and a concentrated water membrane surface flow speed (a minimum concentrated water membrane surface flow speed) of the module unit having the lowest membrane surface flow speed, are operated to satisfy such a relation as the highest concentrated water membrane surface flow speed/the lowest concentrated water membrane surface flow speed

公开(公告)号：JP3744140B2

公开(公告)日：2006-02-08

申请号：JP23073697

申请日：1997-08-27

申请人： 東レ株式会社

发明人： 利次 尾上 ,  弘之 山村 ,  和彦 西村

IPC分类号： B01D63/00 ,  C02F1/44 ,  B01D63/02