Process for recycling photographic wash water

摘要

A method of treating photoprocessing wash water, comprising in sequence, the steps of: A) contacting the wash water with an acrylic anion exchange resin to remove silver thiosulfate complex in the water; and B) contacting the water from step A) with an oxidizing agent that converts thiosulfate ions to sulfate ions. C) recirculating continuously through the photoprocessing wash tank and steps A) and B).