*$_The normal value of over flow rates for plain primary sedimentation

1.	*$_The normal value of over flow rates for plain primary sedimentation tanks, ranges between?
A.	25,000 to 35,000 litres/sqm/day
B.	40,000 to 50,000 litres/sqm/day
C.	50,000 to 60,000 litres/sqm/day
D.	80,000 to 100,000 litres/sqm/day
Answer» C. 50,000 to 60,000 litres/sqm/day

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