FIELD: photographic and photochemical industries. SUBSTANCE: the treatment of residual liquids of fixing baths in the photographic and photochemical industries comprises separation of silver, treatment with a mixture of nitric and sulfuric acids in a 1:3 ratio and separation of sulfur. The method makes it possible to reuse the liquid and utilize it as a fertilizer when the resulting acid solution is neutralized with lime milk or as a reducing agent in liquid waste products containing chromic acid. EFFECT: improved treatment method. 8 cl
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