Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1992-05-28
1994-02-01
Spear, Frank
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210641, 210651, 210652, B01D 6158
Patent
active
052829677
ABSTRACT:
A method of feeding pure water under germ-free conditions is provided by purifying raw water into primary water by successive passage through a defined series of purification units, temporarily storing the primary water in a primary water tank, further purifying the stored water to still higher purity by passage through a defined series of purification units; injecting HF or a salt of HF into the thus-purified water in bacteriostatic and sterilizing concentrations and then feeding it to its point of use.
REFERENCES:
patent: 3887482 (1975-06-01), Hellestam et al.
patent: 4436645 (1984-03-01), Ceaser
patent: 4795497 (1989-01-01), McConnell et al.
patent: 4936955 (1990-06-01), Dobson et al.
patent: 5147605 (1992-09-01), Tatsuno et al.
Block; Disinfection, Sterilization, and Preservation, 1983, p. 682.
Miyamoto Mitsuo
Ohta Yoshiharu
Sawada Koichi
Tatsuno Toshio
Morita Kagaku Kogyo Co., Ltd.
Normura Micro Science Co., Ltd.
Spear Frank
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