Question: 7 Two rectangular clarifiers - each 3 0 ft long and 1 5 ft wide with a water depth of 1 0 ft - settle

7 Two rectangular clarifiers-each 30 ft long and 15 ft
wide with a water depth of 10 ft -settle 0.40 mgd fol-
lowing alum coagulation. The effluent channels have
a total weir length of 60 ft . Calculate the detention
time, horizontal velocity of flow, and rate of flow over
the outlet weirs. Do these values meet the Standards
for Water Works?
7 Two rectangular clarifiers - each 3 0 ft long

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