Barium Fouling

In ion exchange deionization, a condition where the cation exchanger resin becomes coated with a very insoluble coating of barium sulfate. This occurs in the decationization unit when regenerated with sulfuric acid, where a barium-bearing water is being processed. Generally, the remedy must be to replace the cation resin and install upstream water softening to remove the barium prior to the deionization treatment.