SEEN TO PREPARE WATER-EFFECTIVE RESOURCES FROM METALLISATION BASE

摘要

A method for purifying aqueous residues from exhausted metallizing baths, which contain at least one amino compound as a complex-forming agent, which comprises anodically treating the aqueous residue containing heavy metal ions and complex-forming agent at a voltage, current density and time sufficient to eliminate the complexing ability of the amino compound, and removing the heavy metal ions from said aqueous residue.