A short overview of the formation of aerated flocs and their applications in solid/liquid separation by flotation

This review summarises the formation of aerated flocs or aeroflocs and describes their use in solid/liquid or liquid/oil/water separations during flocculation–flotation wastewater treatment. Here, the key future flocculation devices, techniques and trends are reviewed. Knowledge regarding the formation of aeroflocs and their current applications will be used for future applications and lead to the development of compact and high-throughput devices for rapid flocculation–flotation separations.

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► Review involving aerated flocs and its application in solid/liquid separations.
► Flocculation–flotation processes assisted by light aerated flocs.
► Main upcoming flocculation–flotation devices and techniques for aeroflocs formation.
► Future trends and potential in industrial application of rapid flocculation–flotation.