Process for reducing consumption of fresh water and energy costs

Details Process for reducing consumption of fresh water and energy costs Process for reducing consumption of fresh water and energy costs

1995-08-07

1997-04-22

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210669, 210688, 210744, 210912, 423 24, 430463, C02F 900

Patent

active

056226314

ABSTRACT:
Apparatus combination and system for reducing use of fresh water in a photoprocessing operation by recirculation of the wash water to the photoprocessing operation via a silver recovery system. Wash water is periodically discharged to waste and a like amount of fresh water is added to the system which serves to reduce the concentration of thiosulfate ions in the wash water.

REFERENCES:
patent: 3870033 (1975-03-01), Faylor et al.
patent: 4137290 (1979-01-01), Degenkolb et al.
patent: 4451132 (1984-05-01), Kishimoto
patent: 4857950 (1989-08-01), Takase et al.

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