公开(公告)号：US20020125137A1

公开(公告)日：2002-09-12

申请号：US10024291

申请日：2001-12-21

Applicant: KURITA WATER INDUSTRIES LTD.

Inventor： Shin Sato ,  Takayuki Moribe

IPC: B01D061/48

CPC classification number: B01D61/025 ,  B01D61/48 ,  B01D61/52 ,  B01D61/58 ,  B01J47/08 ,  C02F1/283 ,  C02F1/42 ,  C02F1/444 ,  C02F1/4604 ,  C02F1/4695 ,  C02F9/00 ,  C02F2103/04 ,  C02F2201/46115 ,  Y02A20/131 ,  Y02A20/134

Abstract: An electrodeionization apparatus has an anolyte compartment 17 having an anode 11, a catholyte compartment 18 having a cathode 12, concentrating compartments 15, and desalting compartments 16. The concentrating compartments 15 and the desalting compartments 16 are alternately formed between the anolyte compartment 17 and the catholyte compartment 18 by alternately arranging a plurality of anion-exchange membranes 13 and a plurality of cation-exchange membranes 14. The desalting compartments 16 are filled with ion-exchanger and the concentrating compartments 15 are filled with ion-exchanger, activated carbon, or electric conductor. Electrode water flows into the anolyte compartment 17 and the catholyte compartment 18. Concentrated water is introduced into the concentrating compartments 15. Raw water is fed into the desalting compartment 16 to produce the deionized water from the desalting compartment 16. Water containing silica or boron at a lower concentration than the raw water is introduced into the concentrating compartments 15 as the concentrated water in a direction from a side near an outlet for the deionized water toward a side near an inlet for the raw water of the desalting compartments 16. At least a part of concentrated water flowing out of the concentrating compartments 15 is discharged out of a circulatory system.

Abstract translation: 电去离子装置具有阳极电解液室17，其具有阳极11，具有阴极12的阴极电解液室18，浓缩室15和脱盐室16.浓缩室15和脱盐室16交替地形成在阳极电解液室17和 通过交替布置多个阴离子交换膜13和多个阳离子交换膜14.阴极电解液室18用离子交换器填充脱盐室16，并且浓缩室15填充有离子交换剂，活性炭或 电导体。 电极水流入阳极电解液室17和阴极电解液室18.浓缩的水被引入浓缩室15.原水进入脱盐室16以从脱盐室16产生去离子水。含有二氧化硅或硼的水 比原水较低的浓度作为浓缩水以浓缩水的方式从靠近去离子水的出口的一侧向靠近脱盐室16的原水的入口的一侧引入浓缩室15中。至少 从浓缩室15流出的浓缩水的一部分从循环系统排出。