| 摘要 |
1278005 Ion exchange WESTINGHOUSE ELECTRIC CORP 30 Sept 1970 [1 Oct 1969] 46426/70 Heading B1J The anion and cation exchange resins of a mixed bed are regenerated by separating the mixed bed into two fractions, one predominantly of the anion exchange resin and the other predominantly of the cation exchange resin regenerating each fraction, the anion exchange resin fraction firstly by a solution of a caustic alkali and then by a basic solution containing Ca, Sr or Ba cations to replace the alkali metal cations in the cation exchange resin present in the anion fraction. The mixed bed is then reformed. |
