Dissolved Air Flotation System for Wastewater Treatment
The DAF dissolved air flotation system is an ideal method for removing positively buoyant and neutrally buoyant liquids and particulate matter from wastewater. This time-tested and cost-effective treatment solution can remove solids, oil, grease, fibrous materials, and BOD/COD. Solids removal rates consistently exceed 99%.
How DAF System Works: Streamlined & Efficient Process
The DAF system's operation revolves around a precise, low-complexity workflow. First, pressurized dissolved air water (generated by the integrated air dissolution system) is pumped into an air releaser, where pressure is reduced to produce 15-30μm micro-bubbles. These tiny bubbles have strong adhesion, quickly attaching to suspended solids in the wastewater. The bubble-contaminant aggregates become lighter than water, floating upward to form a scum layer on the surface. A specialized skimmer system then scrapes this scum into a sludge tank for centralized disposal. The clarified water at the bottom flows into a clean water tank, with at least 30% recycled back to the air dissolution system to ensure operational efficiency, while the remaining portion is either discharged directly or pumped to subsequent treatment processes.
DAF Wastewater System Technical Data
|
Model |
Capacity (m3/h) |
Weight (KG) |
Installed Power (kw) |
Return Pump (kw) |
Air Compressor (kw) |
Slag Skimmer (kw) |
Mixer A (kw) |
Mixer B (kw) |
Material |
|
CY-DAF005 |
5 |
3000 |
4.75 |
3 |
0.55 |
0.1 |
0.55 |
0.55 |
Carbon steel/Stainless steel |
|
CY-DAF010 |
10 |
4000 |
4.75 |
3 |
0.55 |
0.1 |
0.55 |
0.55 |
Carbon steel/Stainless steel |
|
CY-DAF025 |
25 |
5500 |
5.85 |
3.7 |
0.75 |
0.1 |
0.75 |
0.55 |
Carbon steel/Stainless steel |
|
CY-DAF050 |
50 |
7000 |
9.05 |
5.5 |
1.5 |
0.2 |
1.1 |
0.75 |
Carbon steel/Stainless steel |
|
CY-DAF080 |
80 |
9000 |
11 |
7.5 |
1.5 |
0.2 |
1.1 |
0.75 |
Carbon steel/Stainless steel |
|
CY-DAF-100 |
100 |
12000 |
16.5 |
7.5 |
2.2 |
0.4 |
1.5 |
1.1 |
Carbon steel/Stainless steel |
Benefits of DAF Dissolved Air Flotation System
Removing up to 99% of contaminants.
Integrated chamber design for a smaller footprint.
Compared to traditional clarifiers, sludge production is significantly lower.
Some circulating pumps do not require compressed air.
Optional materials include coated steel, stainless steel, or polypropylene.
Capacity range: 5-100 m3/h.
Applications of DAF Wastewater System
The versatility of the DAF dissolved air flotation system makes it a perfect fit for a wide range of sewage purification projects across key industries:
* Paper Industry: Facilitates pulp recovery from white water and enables clean water recycling, reducing water consumption and raw material waste.
* Textile & Printing and Dyeing Industry: Effectively reduces color chromaticity and removes suspended solids (SS), ensuring wastewater meets discharge requirements and supporting eco-friendly production.
* Slaughterhouse & Food Processing Industry: Efficiently separates fats, oils, and organic solids from wastewater, preventing pipeline blockages and environmental pollution.
* Petrochemical Industry: Delivers reliable oil-water separation, removing emulsified oil and grease from industrial wastewater to protect downstream treatment equipment and meet environmental regulations.
