Method for feeding germ-free pure water

Details Method for feeding germ-free pure water Method for feeding germ-free pure water

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.

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