Water and Wastewater.com Help Forum - Why need floculation in DAF?
only to elaborate the influence besides the surface of flocs for capture.
Flotation can also be used to remove fine particles provided they have a hydrophobic surface. This is not the case for normal wastewater colloids and fines because they are usually negatively charged. By flocculation or coagulation these charges are equalized and the particles become less polar. Nevertheless the main removal mechanism is the formation of flocs.
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