Abstract: A moving bed ion exchange apparatus including a loading vessel having a resin inlet and a resin outlet and containing an ion exchange resin bed, a feed liquid inlet and outlet for passing a feed liquid through the resin bed in the loading vessel, a U-shaped regeneration vessel containing an ion exchange resin bed, one end of the regeneration vessel having a first conduit in resin transfer communication with the resin outlet in the loading vessel and the other end of the regeneration vessel having a second conduit in resin transfer communication with the resin inlet of the loading vessel, a first resin passing control valve for controlling the flow of resin through the first conduit, a second resin passing control valve for controlling the flow of resin through the second conduit, a regenerant inlet connected to the regeneration vessel for introducing regenerant into said vessel, a displacement rinse inlet connected to the regeneration vessel for introducing a rinse liquid into said regeneration vessel to dipl

Abstract: A mixed resin bed deionizing apparatus for removing toxic or mineral substances from fluid passing through a loading vessel containing a mixed bed of cation and anion resins and a regeneration assembly for regenerating the cation and anion resins for return to the loading vessel, the assembly including a separation vessel for separating the cation and anion resins and two "U"-shaped regeneration vessels, one for regenerating cation resins and one for regenerating aniona resins, the resins being admitted to the regeneration vessels in predetermined amounts which are advanced through the regeneration vessels by removing a predetermined amounts of regenerated resin from the discharge end of the vessel, shifting the remaining resin in the vessel to refill the space in the discharge end and adding a corresponding amount of exhausted or loaded resin to the other end, passing a regenerant through the regeneration vessel counter to the direction of movement of the resin through the regeneration vessel and rinsing the