Calculate the amount of softener resin required for the following information. Magnesium: 80 ppm as CaCO3 Capacity: 47 Kg/m3 Correction factor: 0.9 Flow rate: 135 m3/hr Operation hours: 20 hrs

Correct Answer: 5.1 m3
Magnesium load= Magnesium as CaCO3 x Flow rate x Operating hours/1000. Resin Volume= Magnesium load/ (Exchange capacity x Correction factor). Resin Volume =/(47 x 0.9)= 5.1 m3.