Economizing the Energy Consumption in Circular Surface Aerator

Oxygen transfer and power requirement with rotor speed has always been a central topic for design and scale-up of surface aerators. Present study develops design curves correlating the oxygen transfer coefficient, power per unit volume and rotor speed. Based on the design curves, energy conservation by using right sized circular tank surface aerators has been discussed and demonstrated that it is economical to use a big sized circular tank surface aerator rather than using multiple numbers of smaller sized circular tank to aerate the same volume of water.