Water treatment using a cation-exchange resin in the H⁺ form,followed by an anion-exchange resin in the OH^- form,unlike the processes using typical zeolites or synthetic resins regenerated by sodium chloride,can produce:

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The use of cation-exchange and anion-exchange resins in the H⁺ and OH^- forms, respectively, is a common method for producing deionized water. This process removes both positive and negative ions, resulting in water that is nearly pure. Brine water is a byproduct of regeneration with salt, and distilled water is produced through a different process of boiling and condensing. Hard water contains high levels of calcium and magnesium ions, while soft water has low levels of those ions, and neither of those conditions are produced by this specific water treatment method.

Water Treatment Using a Cation-Exchange Resin in the H+ Form,followed

Water Treatment Using a Cation-Exchange Resin in the H⁺ Form,followed