Ecology, Environment and Conservation Paper

Vol.15, Issue 1, 2009; Page No.(77-80)

EVALUATION OF OPTIMUM OVERALL 02TRANSFER CO-EFFICIENT FOR 'CURVED BLADAERATOR' WITH RESPECT TO OXIDATION DITCH

S.B. Thakre. and L.B. Bhuyar

Abstract

This paper examines the use of curved blade aerator for oxidation-Ditch process. The rotor, which controls the aeration, is the main component of the aeration process. Therefore, the objective of this study is to find out the variations in overall oxygen transfer coefficient (Ica) for different configuration of aerators by varying the parameters like speed of aerator, depth of immersion, so as to yield higher values of ISa. & simultaneously should consume less power. Four aerators of different configuration were developed and fabricated in the laboratory and were tested for above mentioned parameters. In laboratory studies, the optimum value of KLa was observed to be 10.33 h-1 for speed 48 rpm, depth of immersion 5.5cm.

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