Calculate the length of the rapid sand filter for the following details. Flow:

Question - Calculate the length of the rapid sand filter for the following details.
Flow: 1000 m³/h.
Velocity: 5 m/h
Backwash time: 30 mins

Options:

A . 1.0 m

B . 1.9 m

C . 1.7 m

D . 1.2 m

Answer: Option B
Answer: (b).1.9 m

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