1.

The rate of filtration for rapid sand filter is ___________

A. 3000 to 4500 lit/hr/m2
B. 4500 to 6500 lit/hr/m2
C. 3000 to 6000 lit/hr/m2
D. 4500 to 7000 lit/hr/m2
Answer» D. 4500 to 7000 lit/hr/m2


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