Oxygen Transfer with Circulation Flow Rate in Unbaffled Surface Aerator

Bimlesh Kumar and Thiyam Tamphasana Devi
Department of Civil Engineering, Indian Institute of Technology Guwahati Guwahati-781039, India; bimk@iitg.ernet.in, d.thiyam@iitg.ernet.in
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Circulation flow rate and vortex in unbaffled surface aeration systems are interrelated. These properties exert a profound effect on the performance of the surface aeration systems affecting the oxygen transfer process. This work develops the scale up criteria for oxygen transfer rate based on the circulation flow rate. A relationship between circulation flow rate and vortex depth in surface aerators has been also developed

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