| 摘要 |
<p>Contaminating anions are removed from aqueous media by reacting them indirectly with lead from an anode to produce an insoluble lead compound which is subsequently separated from the aqueous medium. The lead is obtained from an anode containing lead or an insoluble lead compound which reacts with an activating ion, such as acetate or chloride, to produce soluble lead ions, which subsequently react with the contaminant anion, e.g., chromate from a purge stream of cooling tower water or from rinses of chrome plated articles. Also described are electrolytic cells and apparatuses useful in the practice of the method.</p> |
