IAF and DAF

Solid-Liquid Separation Technology

The IAF (induced air flotaton) and DAF (disolved air flotation) processes are ideal for many solids-liquid separation applications. The wastewater stream containing the solids is pre-treated with flocculants and other chemicals as necessary. This stream is introduced to the cell. With IAF, a portion of the clean effluent is recycled back to the top of the cell as a liquid jet that entrains air into the process, thereby utilising the energy of the fluid to induce air into the process. With DAF, an external compressor or blower is used to entrain air into the recycle stream. The air bubbles formed by both processes attach themselves to the flocculated solids giving them buoyancy and enabling them to be floated and form a sludge layer that is removed over a launder while the cleaned wastewater passes to the next stage in the process.

GENERAL APPLICATIONS
• Primary treatment of waste water.
• Algae removal.
• Phosphorus removal.
• Biomass (solids) removal.
• Oil and grease removal.
• Water reclamation for re-use.
• Effluent polishing.
• Dairy processing wastewater.
• General industry wastewater.
• Winery wastewater.
• Abattoir wastewater.
Indeed any situation where solids need separating from a wastewater stream.