| 摘要 |
1,217,171. Ion exchange. JOHN THOMSON-KENNICOTT Ltd. 18 Jan., 1968 [20 Jan., 1967], No. 3200/67. Heading B1J. The collecting/distributing system of an ion exchange is located at an intermediate point of the bed during its normal operative treatment state and during regeneration the upper and lower regions of the bed are regenerated by separate supplies of regeneration liquid. |
