Dissolved Air Flotation (DAF) System
Dissolved Air Flotation (DAF) is a water treatment process that removes suspended solids, oils, grease, and other contaminants by using microbubbles to float impurities to the surface for removal.
How DAF Works:
- Pre-Treatment (Coagulation & Flocculation)
- Chemicals like coagulants (Alum, Ferric Chloride, PAC) and flocculants (polymers) are added to the raw water.
- This causes suspended particles to clump together, making them easier to remove.
- Air Saturation & Release
- A portion of the treated water is pressurized and mixed with air.
- This air-saturated water is then released into the main treatment tank, forming tiny air bubbles (30–50 microns).
- Flotation & Separation
- The microbubbles attach to suspended particles, reducing their density and floating them to the surface.
- A skimming system removes the floating sludge layer.
- Clean Water Discharge
- The clarified water is collected from the bottom and sent for further treatment or reuse.
Applications of DAF
✔ Industrial Wastewater Treatment (Food, dairy, pulp & paper, oil refineries)
✔ Municipal Water Treatment (Removes algae, organic matter, and turbidity)
✔ Sludge Thickening (Enhances sludge dewatering in sewage plants)
✔ Oil & Grease Removal (Refineries, petrochemical plants)
Would you like help with DAF system design, selection, or troubleshooting? 💧🚀