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				| 1. | The treatment system consists of a WAC, SAC which is followed by a WBA and SBA. Calculate the amount of WBA resin required for the following data.M Alkalinity: 100 ppm as CaCO3P Alkalinity: 100 ppm as CaCO3EMA: 25 ppm as CaCO3Capacity: 37 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrs | 
| A. | 2.5 m3 | 
| B. | 2.8 m3 | 
| C. | 1.2 m3 | 
| D. | 7.5 m3 | 
| Answer» D. 7.5 m3 | |