Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1978-10-25
1979-12-04
Cuchlinski, Jr., William A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 60, 210 64, B01D 2938
Patent
active
041771435
ABSTRACT:
A method of improving the operation of filters of the type used to filter cooling water which is used intermittently in direct heat exchange relationship to cool large office buildings and similar structures, which method comprises maintaining the filters when not in use in contact with an aqueous solution which contains a preservative amount of an industrial biocide. Also shown is a method of controlling microorganisms in the filters by using a biocide with the backwash water.
REFERENCES:
patent: 3332871 (1967-07-01), Robinson
patent: 3510433 (1970-05-01), Pasowicz
patent: 3928197 (1975-12-01), Horan, Jr. et al.
patent: 3995443 (1976-12-01), Iverson
Cuchlinski Jr. William A.
Miller Robert A.
Nalco Chemical Company
Premo John G.
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