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Performance comparison of batch and continuous flow surface aeration systems

Kumar, Bimlesh and Rao, Achanta Ramakrishna (2010) Performance comparison of batch and continuous flow surface aeration systems. In: Korean Journal of Chemical Engineering, 27 (6). pp. 1796-1800.

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The oxygen transfer rate and the corresponding power requirement to operate the rotor are vital for design and scale-up of surface aerators. The aeration process can be analyzed in two ways such as batch and continuous systems. The process behaviors of batch and continuous flow systems are different from each other. The experimental and numerical results obtained through the batch systems cannot be relied on and applied for the designing of the continuous aeration tank. Based on the experimentation on batch and continuous type systems, the present work compares the performance of both the batch and continuous surface aeration systems in terms of their oxygen transfer capacity and power consumption. A simulation equation developed through experimentation has shown that continuous flow surface aeration systems are taking more energy than the batch systems. It has been found that batch systems are economical and better for the field application but not feasible where large quantity of wastewater is produced.

Item Type: Journal Article
Publication: Korean Journal of Chemical Engineering
Publisher: Springer
Additional Information: Copyright of this article belongs to Springer.
Keywords: Activated Sludge Process; Continuous Flow; Geometric Similarity; Oxygen Transfer; Power Number; Surface Aerator; Two Film Theory
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 07 Dec 2010 09:00
Last Modified: 07 Dec 2010 09:00
URI: http://eprints.iisc.ac.in/id/eprint/34308

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