Title:
超純水を製造するための方法
Document Type and Number:
Japanese Patent JP7132932
Kind Code:
B2
Abstract:
The present invention relates to a method for producing purified water comprising a step (a) of passing water through a first mixed bed ion exchanger comprising beads having a diameter between 0.5 and 0.7 mm and a step (b) of passing water through a second mixed bed ion exchanger comprising beads having a diameter of less than 0.5 mm. The invention further relates to a module comprising the first and second mixed bed ion exchanger and to a water treatment system for producing ultrapure water comprising the first and second mixed bed ion exchanger.
Inventors:
Ichiro Kano
Dima, Gabriella
Ratjäwil, Jan
Dima, Gabriella
Ratjäwil, Jan
Application Number:
JP2019543202A
Publication Date:
September 07, 2022
Filing Date:
February 13, 2018
Export Citation:
Assignee:
Merck Patent Gesellschaft mit beschraenkter Haftung
International Classes:
C02F1/42; B01D61/02; B01D61/46; B01J39/05; B01J39/20; B01J41/05; B01J41/14; B01J47/04; C02F1/28; C02F1/44; C02F9/02; C02F9/04; C02F9/06
Domestic Patent References:
| JP2009541032A | ||||
| JP2001515397A |
Foreign References:
| US5464532 | ||||
| US5250187 | ||||
| US20020179508 |
Attorney, Agent or Firm:
Kiyokazu