The waste water 1MLD with 500 mg/L 5-day BOD is to be treated by activated sludge process (ASP). The desired effluent BOD is 30 mg/L. (a) Volume of aerator (b) If the ASP is designed as completely mixed reactor without sludge recycle, determine the hydraulic detention time and biological solids retention time of the unit. (c) Draw the flow diagram of this process. Assume BOD loading rate of aeration tank to be 0.5 kg of BOD removed/kg of MLSS/ day. Concentration of mixed suspended solids (MLSS) in aeration tank is 2,000 mg/L.

The waste water 1MLD with 500 mg/L 5-day BOD is to be treated by activated sludge process (ASP). The desired effluent BOD is 30 mg/L. (a) Volume of aerator (b) If the ASP is designed as completely mixed reactor without sludge recycle, determine the hydraulic detention time and biological solids retention time of the unit. (c) Draw the flow diagram of this process. Assume BOD loading rate of aeration tank to be 0.5 kg of BOD removed/kg of MLSS/ day. Concentration of mixed suspended solids (MLSS) in aeration tank is 2,000 mg/L.

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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