A Hybrid Flotation - Microfiltration Cell for S/L Separation: Operational Characteristics
A new hybrid process for cleaning wastewater, combining membrane microfiltration and flotation, was investigated. The hybrid process combined the advantages of both membrane separation and flotation: the flotation cell removed a large proportion of suspended solid particles, while the membrane module produced a clean water permeate effluent. The proof of concept for the hybrid solid/liquid separation process was investigated using an aqueous suspension of ultra-fine zeolite particles. Process parameters investigated were: the liquid and gas superficial velocities, and back¬flushing. Promising results are reported regarding the solid-liquid separation, including a case study of a mine wastewater; attention has been also paid to the economics of this integrated process.
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