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Question
Calculate the flow rate of the backwash pump to be used for a dual media filter with the following data.
Flowrate: 2200 m³/h
Rise velocity of DMF: 15 m/h
Options:
A .  4500 m³/ h
B .  3520 m³/ h
C .  3750 m³/ h
D .  4920 m³/ h
Answer: Option B
Answer: (b).3520 m³/ h

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