Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1995-05-11
1996-09-10
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
210669, 210683, C02F 900
Patent
active
055542956
ABSTRACT:
A method for producing pure water is provided which reduces non-ionic silica in pure or ultrapure water. With the method, non-ionic silica which is contained in water is brought into contact with ozone having a concentration of at least 1 ppm for at least 20 minutes to react therewith and, simultaneously with or after this reaction process, irradiated with ultraviolet rays to undergo ionization and passed through an anion exchange column. The processed water passed through this ion exchange resin column contains practically no non-ionic silica.
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Edwards et al., "A Mechanistics Study of Ozone-Induced Particle Destabilization", Research Technology, Journal AWWA, Jun. 1991, pp. 96-105.
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Ban Cozy
Fukumoto Takaaki
Kawada Kazuhiko
Manabe Toshiki
Yanagi Motonori
Cintins Ivars
Mitsubishi Denki & Kabushiki Kaisha
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