While designing a blower for backwash for dual media filters without a – McqOptions

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1.	While designing a blower for backwash for dual media filters without air scouring what is the velocity considered?
A.	t36 m/h
B.	t30 m/h
C.	t24 m/h
D.	t20 m/h
Answer» C. t24 m/h

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