| 摘要 |
A process and apparatus for the upflow ion exchange treatment of liquids in a single vessel containing a lower bed of cationic ion exchange resin and an upper bed of anionic ion exchange resin which are not separated by other physical devices but which can be separated by an inert resin. The anionic and cationic ion exchange resins in the vessel can be regenerated simultaneously in all of the preferred embodiments of the present invention. The preferred embodiments allow either countercurrent or cocurrent regeneration of the ion exchange resin beds.
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