Basic Information
Usage
Industrial, Hospital
Treatment Capacity
0.5-200m3/Hour
Material
Carbon Steel/ SS304/SS316L
Application
Wastewater Treatment
Function
Solid-Liquid Separation
Transport Package
Bulk or Plywood Case Packing
Production Capacity
100 Sets/Month
Product Description
Dissolved Air Flotation (DAF System) is a water treatment process that clarifies wastewater (or other water, such as river or lake) by removing the suspended solids or oil & grease. It is widely used in wastewater treatment for solid-liquid separation; it can remove suspended solids, oil & grease, and colloidal substances effectively. Meanwhile, COD and BOD can be reduced. It's the main equipment for wastewater treatment.
Technical Data Sheet
| Model |
Capacity (m³/h) |
Dissolved Air Vol (m³/h) |
Main Motor (kw) |
Air Compressor (kw) |
Skimmer (kw) |
Agitator (kw)×2 |
Total(kw) |
| With/Without Reaction |
| GF-1 | 0.5-1 | 0.3-0.5 | 0.55 | 0.55 | 0.18 | 0.37×2 | 1.28 / 2.02 |
| GF-5 | 3-5 | 1.5-2 | 1.1 | 0.55 | 0.2 | 0.4×2 | 1.85 / 2.65 |
| GF-10 | 5-10 | 3-4 | 1.5 | 0.75 | 0.2 | 0.4×2 | 2.45 / 3.25 |
| GF-20 | 15-20 | 5-7 | 2.2 | 0.75 | 0.4 | 0.75×2 | 3.35 / 4.85 |
| GF-50 | 40-50 | 15-18 | 7.5 | 1.5 | 0.4 | 0.75×2 | 9.4 / 10.9 |
| GF-100 | 80-100 | 35-40 | 15 | 2.2 | 0.4 | 0.75×2 | 17.6 / 19.1 |
| GF-200 | 180-200 | 70-80 | 22 | 4 | 0.4 | 1.1×2 | 26.4 / 28.6 |
Structure Features
The DAF System mainly consists of a dissolved air pump, air compressor, dissolved air vessel, rectangle steel tank body, and skimmer system.
- ✓Easy operation and simple management, convenient control of wastewater quantity and quality.
- ✓Micro bubbles (15-30um) are produced, adhering strongly to flocculants for better flotation.
- ✓Unique GFA dissolved air system with 90%+ air dissolving efficiency and strong anti-clogging ability.
- ✓Chain-plate type skimmer for stable operation and high scraping efficiency.
Working Theory
Dissolved air water produced by the GFA system is pumped into the air releaser by reducing pressure. 15-30um micro bubbles from the air releaser adhere to the suspended solids, making them lighter than water. The solids combined with micro bubbles float to the surface to form a scum layer, which is scraped by the skimmer system into the sludge tank. Clean water flows into the clean water tank. At least 30% of the clean water is recycled for the GFA system.
Application Industries
The DAF System is widely used in sewage purification engineering for various industries:
- 1Paper industry: Pulp recycle and clean water recycling.
- 2Textile, printing, and dyeing: Color reduction and SS removal.
- 3Slaughterhouse and food industry waste treatment.
- 4Petro-chemical industry: Effective oil-water separation.
Workshops and Packing
Frequently Asked Questions
What are the primary applications of a DAF system?
DAF systems are primarily used for solid-liquid separation in industries like paper production, textile dyeing, slaughterhouses, and petro-chemical oil-water separation.
What materials can the tank body be made of?
Depending on the wastewater requirements, the tank can be constructed from Carbon Steel, SS304, or SS316L stainless steel.
How efficient is the GFA dissolved air system?
The GFA dissolved air system is highly efficient, capable of reaching an air dissolving rate of 90% or more, and features strong anti-clogging capabilities.
What size are the micro bubbles produced?
The system produces micro bubbles ranging from 15 to 30 microns, which effectively adhere to suspended solids for efficient flotation.
Can the DAF system reduce COD and BOD?
Yes, by effectively removing suspended solids, grease, and colloidal substances, the DAF system significantly reduces both COD and BOD levels in the wastewater.
Is the capacity of the DAF system customizable?
Absolutely. While standard models range from 0.5 to 200m³/h, specifications can be customized based on specific project requirements.
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