176502 ⎘
Photographic processes or agents therefor; Regeneration of such processing agents; Processes using silver-salt-containing photosensitive materials or agents therefor; Regeneration of photographic processing agents other than developers; Replenishers therefor Chemical, mechanical or thermal methods, e.g. oxidation, precipitation, centrifugation
Method for treating iron in a silver recovery process
#2Material and method for treating photographic effluents
#3Thin film evaporating concentrator, method of evaporating and solidifying photographic waste solution, and reuse method of photographic waste solution
#4Photographic developer effluent transfer station and drain wash