Electroflotation extraction of valuable components from wash waters of electroplating works, with water recycling

An electroflotation technology for extracting ions of heavy nonferrous meta ls from the wash and waste waters of electrolytic baths is proposed. The ma in regularities and basic parameters of the electroflotation extraction of ions of copper, zinc, nickel, chromium, and iron in the form of hydroxides, phosphates and sulfides of the metals are determined. Optimum technologica l parameters for the extraction of copper ions in the presence of complexin g agents are established. Advantages of an electroflotation with electrocor rection of pH are shown.