Calculate the SAC resin required for the following data. It should be noted that prior to the SAC, a WAC system is present. M Alkalinity: 100 ppm as CaCO3 P Alkalinity: 100 ppm as CaCO3 EMA: 50 ppm as CaCO3 Capacity: 57 Kg/m3 Correction factor: 0.9 Flow rate: 135 m3/hr Operation hours: 20 hrs

The WAC removes 60 % of the load of the Alkalinity. The load for SAC is calculated as 0.4 x (P Alkalinity + M Alkalinity). Ionic load= 0.4 x (P Alkalinity + M Alkalinity) +(EMA) as CaCO3 x Flow rate x Operating hours/1000. Resin Volume= Cation load/ (Exchange capacity x Correction factor). Resin Volume = /(57 x 0.9)= 0.6 m3.