Apparatus for recycling photographic wash water

Details Apparatus for recycling photographic wash water Apparatus for recycling photographic wash water

1976-09-30

1977-09-06

Moore, Christopher K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

134 64P, 134122P, G03D 302

Patent

active

040458393

ABSTRACT:
Disclosed is an apparatus for processing spent photographic wash water, so that it may be recycled for reuse in the washing apparatus involving passing the spent wash water through an oxidation reaction apparatus to convert any thiosulfate salts in the spent wash water to sulfate salts, and then returning the sulfate water to the developing apparatus for reuse as wash water. In the reactor, the thiosulfate salts in the wash water react in the presence of an oxidation catalyst with oxygen from spent drying air passed to the reactor.

REFERENCES:
patent: 3186942 (1965-06-01), Benger
patent: 3531284 (1970-09-01), Armstrong et al.
patent: 3721624 (1973-03-01), Fisch et al.
patent: 3737941 (1973-06-01), Miller et al.
patent: 3813246 (1974-05-01), Schranz et al.
patent: 3896828 (1975-07-01), Foster et al.
1951, Photographic Engineering, vol. 2, No. 3, pp. 148-160, by Levinos, "Stabilization Processing".
West, Photo. Sci. & Eng., vol. 9, 1965, pp. 398-413.

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