Discussion Forum : Advanced Wastewater Treatment Methods
Question - Calculate the regenerant flow required for the softener system with the given below data.
Calcium Load: 85 ppm as CaCO₃
Capacity: 37 Kg/m³
Correction factor: 0.9
Flow rate: 135 m³/hr
Operation hours: 20 hrs
Options:
A .  25 m³/hr
B .  28 m³/hr
C .  12 m³/hr
D .  21 m³/hr
Answer: Option D
Answer: (d).21 m³/hr
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