Dissolved Air Flotation (DAF)
Dissolved air flotation for maximum separation performance
- Up to 99% removal of grease, oil and suspended solids
- Compact design with integrated sludge scraper
- Energy-efficient micro-bubble system (< 40 µm)
- Modular design for easy capacity extension
- Available as a stationary or mobile containerised unit
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Technical data
| Flow rate | 5 – 100 m³/h (larger units on request) |
| Grease/oil removal | > 95% |
| TSS removal | > 95% |
| P removal | > 90% (with precipitation) |
| Bubble size | 20 – 40 µm |
| Saturation pressure | 4 – 6 bar |
| Total power | 4.75 – 16.2 kW |
| Material | Stainless steel 1.4301 / PP |
| Control | PLC with remote access |
Indicative values. Final data is confirmed project-specifically.
How it works
Inlet & chemical addition
Coagulant and flocculant are added to the wastewater before it enters the reaction zone.
Saturation
A part stream of the clarified water is saturated with air under pressure (recycle stream).
Flotation
Releasing the recycle stream creates micro-bubbles that attach to the flocs and lift them to the surface.
Sludge removal
The float sludge is skimmed off automatically; clarified water leaves at the bottom.
Typical applications
Sizes & configurations
RF-DAF series — dissolved air flotation units
| Model | Capacity (m³/h) | Length (mm) | Width (mm) | Height (mm) | Net weight (t) | Operating weight (t) | Total power (kW) |
|---|---|---|---|---|---|---|---|
| RF-DAF-005 | 5 | 2800 | 1000 | 2100 | 3 | 8 | 4.75 |
| RF-DAF-010 | 10 | 3200 | 1200 | 2200 | 4 | 12 | 4.75 |
| RF-DAF-025 | 25 | 5000 | 1500 | ~2350* | 5.5 | 21 | 5.85 |
| RF-DAF-050 | 50 | 6500 | 2000 | 2500 | 7 | 36 | 9.05 |
| RF-DAF-080 | 80 | 7600 | 2600 | 2600 | 9 | 55 | 11.05 |
| RF-DAF-100 | 100 | 8300 | 3000 | 3000 | 12 | 70 | 16.2 |
Carbon steel construction (stainless steel on request). Scope includes recycle pump, air compressor, skimmer drive and flocculation mixers. * Indicative overall height, interpolated from the adjacent frame sizes (RF-DAF-010 / RF-DAF-050). The binding value is confirmed with the general arrangement drawing at order stage.
Indicative values. Final data is confirmed project-specifically.
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