
Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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You’re working on a preliminary design for a water treatment plant expansion for Fell City. The required capacity is 12 MGD (million gallons per day). The TSS of the sedimentation basin effluent is 16 mg/L of TSS. Assume the effluent TSS is 0 mg/L.
(a) Based on a filtration rate of 2 gpm/ft2, how big (area) must the filters be?
(b) If 3% of the treated water is used for backwashing, what would the backwash TSS be? (Set up a mass balance analysis.)
(c) How many tons of sludge (dry solids) would be generated in 30 days?
Answers: 4170 ft2, 533 mg/L, 24 ton
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