Abstract: Sorbable ions are removed from aqueous compositions by the use of an apparatus and method which permits the aqueous composition to flow in an uninterrupted or continuous manner. Included is a resin cycling contactor assembly which continuously accepts the flow of aqueous composition and which turbulently contacts it in a generally co-current elongated contactor path during which ions are removed from the aqueous composition and sorbed to the resin. The resin cycles within the resin cycling contactor assembly until a selected degree of resin contamination is achieved, at which time a predetermined portion of the resin is removed from the resin cycling contactor assembly and replaced by regenerated resin. The resin is regenerated within a regenerator assembly which accomplishes regeneration by counter-current flow of liquids through a packed resin bed.

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

Abstract: Ion exchange techniques are utilized to treat waste water flows, especially those from plating baths, by passing the waste water through a multi-level ion exchange resin bed, the bed thereafter being regenerated by a series of steps, including backwashing, passage of an acidic regeneration fluid through the bed, multi-stage rinsing of the bed, and passage of a caustic regeneration fluid through at least a portion of the bed. Acidic waste flows developed during regeneration steps are, when desired, further treated to recover cyanide values therefrom by heating same within a generally closed tank to drive off a hydrocyanic gas, which is then reacted with caustic within a circulation reactor having an inclined passageway in order to form and recover a cyanide salt liquor suitable for re-use in the plating bath.

Abstract: A method and apparatus is provided for removing large volumes of contaminants or for recovering valuable minerals present in trace amounts or greater quantities by ion exchange treatment of phosphoric acid liquids or the like as they flow through a resin bed wherein ions in the liquid are sorbed into the resin by an ion exchange mechanism. The resin bed is folded, moving bed which exhibits all of the advantages of a packed ion exchange resin bed. Laminar flows are developed at times in the moving bed system, while the moving bed used is of a "folded" type having a maximum height approximately one-third that of conventional, unfolded countercurrent units. The ion exchange treatment occurs within a loading vessel resin bed, the beads in the feed portion of which become exhausted and sequentially move out of the loading vessel for subsequent regeneration and rinsing, followed by eventual return to the loading vessel.

Abstract: A method and apparatus is provided for removing contaminants or for recovering valuable minerals in trace amounts by ion exchange treatment of liquids such as municipal and industrial waste waters, ore mining and processing tailings, and the like as they flow through a resin bed wherein ions in the liquid are sorbed into the resin by an ion exchange mechanism. The resin bed is a folded, moving bed which exhibits all of the advantages of a packed ion exchange resin bed. Laminar flows are developed throughout the moving bed system to maintain all interfaces intact, even during the rinsing operation, while the moving bed used is of a "folded" type having a maximum height approximately one-third that of conventional countercurrent units. The ion exchange treatment occurs within a loading vessel resin bed, the beads in the feed portion of which become exhausted and sequentially move out of the loading vessel for subsequent regeneration and rinsing, followed by eventual return to the loading vessel.

Abstract: A method and apparatus is provided for removing large volumes of contaminants or for recovering valuable minerals present in trace amounts or greater quantities by ion exchange treatment of phosphoric acid liquids or the like as they flow through a resin bed wherein ions in the liquid are sorbed into the resin by an ion exchange mechanism. The resin bed is folded, moving bed which exhibits all of the advantages of a packed ion exchange resin bed. Laminar flows are developed at times in the moving bed system, while the moving bed used is of a "folded" type having a maximum height approximately one-third that of conventional, unfolded countercurrent units. The ion exchange treatment occurs within a loading vessel resin bed, the beads in the feed portion of which become exhausted and sequentially move out of the loading vessel for subsequent regeneration and rinsing, followed by eventual return to the loading vessel.