| 摘要 |
<p>Column comprises three sections, lower one for softening, middle one for washing, upper one for regeneration. Raw water enters lowest section at bottom leavs at top. Spent ion exchange medium is removed from bottom, and is transported to chamber above regeneration section. Wash liquid and regeneration liquid enter respective sections at bottom. Mixture of both leaves top of regenerating section, where part of it is pref. combined with spent ion exchange medium to re-enter regeneration section.</p> |
