FIELD: processing of electroplating production waste acid industrial solutions. SUBSTANCE: method allows to remove non-ferrous and heavy metals ions rather fully from processing solutions and in the case to utilize solid sediments as pigments. It provides, that electroplating production waste acid solutions are mixed with taken from degreasing bath waste solution alkaline agent bearing phosphateions in stoichiometric ratio to cations of removed metals, with pH = 5.5 - 8.0. Filtrate is returned in production, sediment is used as pigment. EFFECT: method allows to remove non-ferrous and heavy metals ions from processing solutions. 5 cl
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Authors
Dates
1996-11-20—Published
1992-04-20—Filed