Abstract
Flotation as a wastewater treatment technique is designed to remove all particles generally encountered as very fine emulsions, suspended solids, and colloids from wastewater. Historically, Dissolved Air Flotation (DAF) has been used to achieve this removal. More recently, other flotation techniques such as induced air, electro, cavitational, and Centrifugal Flotation Systems (CFS) have been applied in wastewater treatment. CFS use centrifugal force to enhance mixing of particles and bubbles with treatment chemicals and accelerate solid/liquid separation. In the most recent design, centrifugal hydrocyclone mixing was combined with small dissolved-air flotation bubbles leading to the development of the hybrid, dissolved-air centrifugal flotation.
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