Description
What Is DAF Dissolved air flotation
Dagyee DAF System proactively promotes solid/liquid separation providing better contaminant removal, more efficient chem usage and drier sludge – using a much smaller footprint than conventional DAFs. The DAF System is often referred to as a 'DAF on Steroids'. However, as opposed to DAF's that require significant retention time and rely on the old-school particle collision process to float solids, the DAF System injects air into 100% of the waste stream while pushing water through a series of hydrocyclones under controlled pressure, removing up to 100% of TSS & FOG. Chemicals are uncoiled in the Heads availing more than 2x the charge sites resulting in a higher rate of contaminant removal. Since separation occurs in the Heads, large tight flocs float and are skimmed off the tank into a sludge hopper. Drier sludge ensues as the air dissipates and chemicals recoil, to naturally dewater the flocs. Costs are reduced due to lower chemical, sludge handling and building costs.
Why Choose DAF Dissolved Air Flotation
- Total suspended solids (TSS) reduced by up to 97
- Chemical oxygen demand (COD) removal rate of up to 60-80%
- Integrated sludge hopper for easy removal of solid deposits
- The DAF area provides a static space for the formation of the float
- Heavy-duty, fully protected, counter-current surface separator that removes surface float
DAF Dissolved Air Flotation Process
DAGYEE DAF Dissolved Air Flotation Advantage
In the DAF System, the floc seeding method is accomplished with the following steps:
- 100% of the waste stream is sent to the DAF System.
- The waste stream is exposed to high pressure (100-120 psi).
- Air is dissolved into the waste stream using new technology.
- Flocculation chemicals are injected into the waste stream using new technology.
- The floc is formed in the now air-enriched wastewater.
- Dissolved air is now entrapped inside the floc structure.
- Water pressure is lowered to ambient.
- Dissolved air in floc structure comes out of solution.
- Air inside floc expands, pushing out water.
- Flocs now float by themselves, as they are now “hollow”.
- Clean water and buoyant flocs are delivered to floatation tank.
|
DAF Model |
Qmax. (m3/h) |
PhysicalDimensions(m) |
Weight (Kg) |
Operating Weight(kg) |
Power(kw) | ||||
|
L/L1 |
W/W1 |
H/H1 |
Refluxpump Kw |
Air compressor kw |
Skimmer |
||||
| DAF-002 | 2 | 3.4/2.5 | 2.4/1.16 | 2.2/1.7 | 1300 | 4000 | 0.75 | 0.55 | 0.2 |
| DAF-003 | 3 | 3.7/2.8 | 2.4/1.16 | 2.2/1.7 | 1500 | 5000 | 0.75 | 0.55 | 0.2 |
| DAF-005 | 5 | 4/3 | 2.4/1.16 | 2.2/1.7 | 1600 | 7000 | 1.1 | 0.55 | 0.2 |
| DAF-010 | 10 | 4.65/3.8 | 2.7/1.36 | 2.4/1.9 | 2000 | 12000 | 1.5 | 0.55 | 0.2 |
| DAF-015 | 15 | 5.6/4.5 | 2.9/1.66 | 2.5/2 | 2200 | 18000 | 2.2 | 0.75 | 0.2 |
| DAF-020 | 20 | 5.9/4.8 | 3.2/1.96 | 2.5/2 | 3000 | 22000 | 3 | 0.75 | 0.2 |
| DAF-030 | 30 | 6.8/5.5 | 3.2/2.16 | 2.7/2.2 | 3800 | 32000 | 3 | 0.75 | 0.4 |
| DAF-040 | 40 | 8/6.7 | 3.6/2.6 | 2.7/2.2 | 5000 | 45000 | 5.5 | 0.75 | 0.4 |
| DAF-050 | 50 | 8.4/7 | 3.6/2.6 | 2.7/2.2 | 5500 | 55000 | 7.5 | 0.75 | 0.4 |
| DAF-060 | 60 | 9.9/8.4 | 3.8/2.8 | 2.9/2.4 | 6000 | 66000 | 7.5 | 1.5 | 0.4 |
| DAF-070 | 70 | 10.4/9 | 3.8/2.8 | 2.9/2.4 | 6500 | 75000 | 11 | 1.5 | 0.4 |
| DAF-080 | 80 | 10.8/9.4 | 4/3 | 2.9/2.4 | 7500 | 100000 | 11 | 1.5 | 0.4 |
| DAF-100 | 100 | 12.1/10.6 | 4.2/3.2 | 2.9/2.4 | 9000 | 110000 | 15 | 1.5 | 0.4 |
| DAF-120 | 120 | 12.5/11.4 | 4.4/3.4 | 2.9/2.4 | 10000 | 130000 | 15 | 1.5 | 0.4 |
DAF Dissolved Air Flotation Application
| Slaughterhouses |
| Meat processing and pack- ing |
| Fish processing Dairies |
| Convenience food production |
| Margarine production Oil and fat refineries Canneries |
| Industrial kitchens and can- teens |
| Fast food providers Soap works Cosmetics industry Textile industry Chemical industry |
| Petrochemical industry Iron and steel industry Metal processing Galvanizing, electroplating Land remediation |
