The velocity of regeneration should be about 5m/h and the concentration about 5%. That isn't the most important bit, if these figures differ slightly. The rinse water is what is exhausting your resin. velocity is flow rate divided by the cross-sectional area of you column.

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The velocity of regeneration should be about 5m/h and the concentration about 5%. That isn't the most important bit, if these figures differ slightly. The rinse water is what is exhausting your resin. velocity is flow rate divided by the cross-sectional area of you column.