Title:
AQUEOUS HYDROGEN PEROXIDE PURIFICATION METHOD AND PURIFICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/074127
Kind Code:
A1
Abstract:
An aqueous hydrogen peroxide purification method for subjecting aqueous hydrogen peroxide to a reverse osmosis membrane separation treatment using a high-pressure reverse osmosis membrane separation device 3, wherein the high-pressure reverse osmosis membrane has a fine skin layer on the membrane surface thereof, when compared to low-pressure or ultra-low-pressure reverse osmosis membranes, and as a result, the amount of water which passes through the membrane per unit of applied pressure is low, and the removal rate of TOC and boron is high. Furthermore, it is preferable to subject the water which has passed through the high-pressure reverse osmosis membrane to an ion exchange treatment using an ion exchange device comprising two or more columns and filled with a gel-type strong ion exchange resin.
Inventors:
YOKOI IKUNORI (JP)
IDE YOSHIAKI (JP)
IDE YOSHIAKI (JP)
Application Number:
PCT/JP2017/033646
Publication Date:
April 26, 2018
Filing Date:
September 19, 2017
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C01B15/013; B01D61/02; B01D69/02; B01J39/05; B01J39/20; B01J41/05; B01J41/14; B01J47/028; C08F8/00; C08F12/00
Domestic Patent References:
| WO2008129984A1 | 2008-10-30 |
Foreign References:
| JP2007507411A | 2007-03-29 | |||
| JP2012188318A | 2012-10-04 | |||
| JP2002080207A | 2002-03-19 | |||
| JPH11180704A | 1999-07-06 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
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