A complete-mixed activated sludge process is to be designed to treat 5.0 MGD of primary effluent having a BOD5 of 180 mg/L. The requirement is that the effluent BOD5 and TSS concentration be 20 mg/L or less on an annual average basis. The following biokinetic coefficient obtained at 15°C: Y = 0.6 mg VSS/mg BOD5, k=2.85d¹¹, Ks = 70 mg/L BOD5, and kå = 0.041 d´¹. Assume that the MLVSS concentration in the aeration basin is maintained at 2,500 mg/L. Determine: a. The minimum MCRT (d) b. The MCRT necessary to meet the requirement (d) C. The volume of the aeration basin (ft³)

A complete-mixed activated sludge process is to be designed to treat 5.0 MGD of primary effluent having a BOD5 of 180 mg/L. The requirement is that the effluent BOD5 and TSS concentration be 20 mg/L or less on an annual average basis. The following biokinetic coefficient obtained at 15°C: Y = 0.6 mg VSS/mg BOD5, k=2.85d¹¹, Ks = 70 mg/L BOD5, and kå = 0.041 d´¹. Assume that the MLVSS concentration in the aeration basin is maintained at 2,500 mg/L. Determine: a. The minimum MCRT (d) b. The MCRT necessary to meet the requirement (d) C. The volume of the aeration basin (ft³)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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