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obr calculation in dm plant

OBR = "resin quantity X ion exchange capacity/ionic load", so you have to adjust one of the three factors. You probably cannot reduce the ionic load, and adding Softner Operating Capacity = Hardness Load(ppm CaCO3)*OBR/Resin Quantity Where, OBR is “Output between regeneration”. calculate the design by hand using resin manufacturers data. Each engineer had their own way to carry out in their calculation.