The normal value of over flow rates for plain primary sedimentation...

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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: Option B

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