A - Human Necessities – 23 – C
Patent
A - Human Necessities
23
C
99/56
A23C 21/00 (2006.01) A23C 9/14 (2006.01) A23C 9/146 (2006.01) B01J 39/04 (2006.01)
Patent
CA 1089698
Abstract of the Disclosure A method for desalination of whey which is conducted through an anion exchanger and a cation exchanger. The whey is first con- ducted through a weakly basic anion exchanger in hydrogen carbo- nate form and then through a weakly acidic cation exchanger in ammonium form. The ion exchangers are regenerated by treatment with an ammonium hydrogen carbonate solution, whereupon the ammonium and hydrogen carbonate ions present in the whey are removed by evaporation. The invention also relates to an apparatus for carrying out the method. The apparatus comprises ion exchange columns having inlet and outlet ends. Each column is connected at its inlet end to means for supplying whey to be desalted and rege- neration solution, and means for removing residual acid and alkali. Each ion exchange column has at its outlet end means for removing spent regeneration solution and supplying acid and alkali. The outlet end is further connected to evaporators for vaporization of treated whey. The apparatus further compri- ses a distiller for distillation of spent regeneration solution, and a tank for holding regeneration solution.
302958
Jonsson Hans B.
Bereskin & Parr
Svenska Mejeriernas Riksforening U. P. A.
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