Dissolved Air Flotation Machine(DAF) is a high-efficiency TSS removal wastewater pretreatment equipment that clarifies wastewater by removing suspended matters such as oil, colloids or other suspended solids.


The removal process is achieved by dissolving air into water under pressure and then releasing the air to atmospheric pressure in the flotation tank. The feed water to DAF float tank is often (but not always) dosed with a coagulant (such as ferric chloride or aluminum sulfate) to coagulate the colloidal particles and/or flocculants to conglomerate the particles into bigger clusters.

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