Method for reducing the content of polyvalent cations in aqueous solution (PROCESS FOR LOWERING THE CONTENT OF POLYVALENT CATIONS IN AQUEOUS SOLUTIONS)

摘要

The process of the present invention consists in passing through a column, preferably a polyacrylic type absorber and a liquid to be purified, wherein the upward velocity of the liquid is such that the over-(Fig. 1) is applied to a water-soluble rinse treatment of the article subjected to the nickel-plating treatment.