Water quality regulations continue to tighten, and treatment systems must adapt to these standards. One versatile solution used today in a wastewater treatment plant is Dissolved Air Flotation (DAF). This technology is especially effective in separating oils, suspended solids, and grease from wastewater.
Why Dissolved Air Flotation Matters
Dissolved Air Flotation is a proven solid-liquid separation process that relies on the interaction between suspended particles and microscopic air bubbles. As bubbles attach to the particles, the mass becomes less dense than the surrounding water. The solids float upward and form a removable layer on the surface.
This feature makes DAF especially valuable in wastewater streams where biological treatment alone is insufficient.
Key Uses in Wastewater Treatment
DAF systems are flexible and suitable for many stages of a wastewater treatment plant, including:
- Pretreatment prior to biological processes
- Tertiary treatment for polishing effluent
- Treatment of high-oil or high-grease wastewater
- Phosphorus removal from tailwater
- Water reuse and reclamation
With improved removal rates and stable operation, DAF helps ensure consistent effluent quality.
Conclusion
By improving suspended solid and oil removal, Dissolved Air Flotation enhances the overall performance of a wastewater treatment plant. As sustainability demands rise, DAF technology will continue to support high-efficiency, cost-effective water purification and reuse.