You are to provide a preliminary design for a Sedimentation Basin for Softening
ID: 1712374 • Letter: Y
Question
You are to provide a preliminary design for a Sedimentation Basin for Softening Floc. The design requires that there be at least 65% removal of solids.
From the Sedimentation Column Testing, the detention time needed to remove 65% of solids in the (2m) testing column is about 0.80 days, and the Over-Flow Rate in the (2m) testing column is 15 m3/day*m2.
Determine the appropriate detention time and overflow rate (OFR) for your Sedimentation Basin design.
Detention Time = 1.33 days, and OFR = 10 m^3/day*m^2
Detention Time = 0.40 days, and OFR = 5 m^3/day*m^2.Explanation / Answer
Detention time should be =1.33day
OFR should be =10
Reason---100 percent efficiency will be achieved becoz particle will be settled at a higher rate and there will be extraa time to settle without going out of tank.
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