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1. WO2020003831 - ELECTRICAL DEIONIZATION APPARATUS, ULTRAPURE WATER MANUFACTURING SYSTEM, AND ULTRAPURE WATER MANUFACTURING METHOD

Publication Number WO/2020/003831
Publication Date 02.01.2020
International Application No. PCT/JP2019/020625
International Filing Date 24.05.2019
IPC
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
46
by electrochemical methods
469
by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
42
Electrodialysis; Electro-osmosis
44
Ion-selective electrodialysis
46
Apparatus therefor
48
having one or more compartments filled with ion-exchange material
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
58
Multistep processes
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
20
by degassing, i.e. liberation of dissolved gases
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
42
by ion-exchange
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
44
by dialysis, osmosis or reverse osmosis
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
9
Multistep treatment of water, waste water or sewage
02
involving a separation step
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
9
Multistep treatment of water, waste water or sewage
04
at least one step being a chemical treatment
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
9
Multistep treatment of water, waste water or sewage
04
at least one step being a chemical treatment
06
Electrochemical treatment
C02F 1/469 (2006.01)
B01D 61/00 (2006.01)
B01D 61/48 (2006.01)
B01D 61/58 (2006.01)
C02F 1/20 (2006.01)
C02F 1/42 (2006.01)
CPC
B01D 61/00
B01D 61/48
B01D 61/58
C02F 1/20
C02F 1/42
C02F 1/44
Applicants
  • 野村マイクロ・サイエンス株式会社 NOMURA MICRO SCIENCE CO., LTD. [JP/JP]; 神奈川県厚木市岡田2丁目9番8号 2-9-8, Okada, Atsugi-shi, Kanagawa 2430021, JP
Inventors
  • 渡辺 祥生 WATANABE Yoshiki; JP
Agents
  • 特許業務法人サクラ国際特許事務所 SAKURA PATENT OFFICE, p.c.; JP
Priority Data
2018-12174627.06.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) ELECTRICAL DEIONIZATION APPARATUS, ULTRAPURE WATER MANUFACTURING SYSTEM, AND ULTRAPURE WATER MANUFACTURING METHOD
(FR) APPAREIL DE DÉIONISATION ÉLECTRIQUE, SYSTÈME DE FABRICATION D'EAU ULTRAPURE ET PROCÉDÉ DE FABRICATION D'EAU ULTRAPURE
(JA) 電気式脱イオン装置、超純水製造システムおよび超純水製造方法
Abstract
(EN)
Provided are an electrical deionization apparatus which can improve boron removal performance and the efficiency of removing ionic components, and a system and method for manufacturing ultrapure water using same. The electrical deionization apparatus has: an electrical deionization stack; a positive electrode and a negative electrode for applying voltage to the electrical deionization stack; and a power supply device for applying DC voltage between the positive electrode and the negative electrode, wherein the electrical deionization stack has: positive electrode chambers having positive electrodes; negative electrode chambers having negative electrodes; a plurality of anion exchange membranes and cation exchange membranes alternately arranged between the positive electrode chambers and the negative electrode chambers; concentration chambers and desalination chambers alternately arranged between the plurality of anion exchange membranes and cation exchange membranes; and ion exchangers filled into the desalination chambers. The DC voltage supplied by the power supply device satisfies the following equation, where Vmax represents the maximum voltage and Vmin represents the minimum voltage during a predetermined period of time. Equation: (Vmax-Vmin)/(Vmax+Vmin)≤0.3
(FR)
L'invention concerne un appareil de désionisation électrique qui peut améliorer la performance d'élimination du bore et l'efficacité d'élimination de composants ioniques, et un système et un procédé de fabrication d'eau ultrapure l'utilisant. L'appareil de désionisation électrique comprend : un empilement de cellules de désionisation électrique ; une électrode positive et une électrode négative pour appliquer une tension à l'empilement de cellules de désionisation électrique ; et un dispositif d'alimentation électrique servant à appliquer une tension continue entre l'électrode positive et l'électrode négative, l'empilement de cellules de désionisation électrique comportant : des chambres d'électrode positive avec des électrodes positives ; des chambres d'électrode négative avec des électrodes négatives ; une pluralité de membranes d'échange d'anions et de membranes d'échange de cations disposées en alternance entre les chambres d'électrode positive et les chambres d'électrode négative ; des chambres de concentration et des chambres de dessalement disposées en alternance entre la pluralité de membranes d'échange d'anions et les membranes d'échange de cations ; et des échangeurs d'ions chargés dans les chambres de dessalement. La tension continue fournie par le dispositif d'alimentation électrique satisfait l'équation suivante, où Vmax représente la tension maximale et Vmin représente la tension minimale pendant une période de temps prédéterminée. Équation : (Vmax-Vmin)/(Vmax + Vmin) ≤ 0,3
(JA)
ホウ素除去性能およびイオン成分の除去効率を向上させることのできる電気式脱イオン装置およびこれを用いた超純水製造システム並びに超純水製造方法の提供。陽極を有する陽極室と、陰極を有する陰極室と、前記陽極室と陰極室との間に交互に配置された複数のアニオン交換膜およびカチオン交換膜と、前記複数のアニオン交換膜およびカチオン交換膜の間に交互に形成された濃縮室および脱塩室と、前記脱塩室内に充填されたイオン交換体とを有する電気式脱イオンスタックと、前記電気式脱イオンスタックに電圧を印加するための陽極および陰極と、前記陽極と陰極の間に直流電圧を印加する電源装置とを有する電気式脱イオン装置であり、前記電源装置が供給する直流電圧が、所定の期間の最大電圧をVmax、最少電圧をVminとしたときに、関係式:(Vmax-Vmin)/(Vmax+Vmin)≦0.3を満たす電気式脱イオン装置。
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