Sulfuric acid quantity calculation for Cooling tower

Hello everyone. I have a question how to calculate sulfuric acid injection capacity for cooling tower. i have no experience cooling tower chemical plant so i need everyones detail opinion. Please refer to below data to calculate sulfuric acid capacity. Make-up Alkalinity : 65ppm(as CaCO3), Cooling tower target Alkalinity(pH 7.5) : 70ppm(as CaCO3) Cooling tower COC : 5, Cooling tower make up rate : 315.74m3/h Sulphuric acid 98% shall be used for cooling tower chemical plant.