Discussion Forum : Advanced Wastewater Treatment Methods
Question - Calculate the fast rinse period of the regenerant liquid for a softener system with the given below data.
Calcium Load: 40 ppm as CaCO₃
Capacity: 37 Kg/m³
Correction factor: 0.9
Flow rate: 235 m³/hr
Operation hours: 10 hrs
Options:
A .  25 mins
B .  30 mins
C .  20 mins
D .  15 mins
Answer: Option A
Answer: (a).25 mins

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