Performance comparison of batch and continuous flow surface aeration systems |
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Authors: | Bimlesh Kumar Achanta Ramakrishna Rao |
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Affiliation: | (1) Department of Civil Engineering, Indian Institute of Science, Bangalore, India |
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Abstract: | 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. |
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