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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