| 摘要 |
Hexavalent chromium baths are regenerated by a succession of electrochemical and chemical steps in electrolysis apparatus having compartments which are separated by a diaphragm limiting the masse transfer. The treatment is carried out by loading, in three steps, one of the compartments and, after filtration, the other compartment, leading to the precipitation or cathodic deposition of contained metal impurities, and rebanlacing of the baths thus regenerated. The disclosed process is simple and economical and is particularly applicable to the purification and regeneration of hexavalent chromium baths. |
