Abstract
Abstract In order to improve the separation efficiency of oil-in-water emulsion, a novel cyclonic state micro-bubble flotation column was developed to enhance the separation efficiency. The flotation column comprises a column separator and a cyclonic separator provided on the bottom plate of the flotation apparatus. The process parameters, namely the feed volume flow rate, initial oil concentration, aeration rate, and oil droplet size on removal efficiency were investigated. The process efficiencies between the cyclonic state micro-bubble flotation column (FCSMC) and dissolved air flotation column (DAF) were compared. Results show that this FCSMC has higher oil removal efficiency and treated water with lower oil levels than the DAF, especially for the process of fine oil droplets (
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