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Dissolved air flotation (DAF) is often used after a primary gravity separator to enhance the quality of wastewater, so it can be released to streams, rivers or the sea. The main aim of the DAF experiments reported here was to measure the oil droplet removal efficiency (η) mostly in the range 15–80μm from oil-in-water mixtures. The DAF tank used in this investigation was a scale model of real DAF unit...
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