Overview
The Dissolved Air Flotation Unit is a solid-liquid separation equipment based on the principle of dissolved air flotation. It is mainly composed of a dissolved air system, a release device, and a slag discharge system. It is widely used in municipal sewage treatment, industrial wastewater treatment, and special water treatment.
Features
High-efficiency purification capacity
The dissolved air flotation unit forms a floating body with a density less than water and floats to the water surface through the efficient adhesion of microbubbles with oil, grease, and suspended flocculants to achieve solid-liquid separation. The total suspended solids (TSS) removal rate can reach 97%, and the chemical oxygen demand (COD) removal rate can reach 85%, ensuring that the effluent water quality is significantly improved.
High-efficiency mixing
The dissolved air system of the dissolved air flotation unit adopts a high-efficiency dissolved air pump, which absorbs water and air at the same time and pressurizes the pump to achieve gas-liquid mixing. The efficiency is as high as 80-100%, which is 3 times higher than that of traditional technology, ensuring that the dissolved air process is efficient and stable.
High-flotation efficiency
The dissolved air releaser equipped with the dissolved air flotation unit can ensure uniform distribution of bubbles, and release the dissolved air-water mixture under reduced pressure to produce a large number of microbubbles with a bubble diameter of 20-30μm, and a large contact area with pollutants, which can improve the flotation efficiency.
Stable operation
The equipped slag removal system uses an automated scraper to operate continuously, with a slag removal efficiency of ≥98%, ensuring the dissolved air flotation unit can operate stably for a long time. At the same time, the dissolved air flotation unit supports remote monitoring and parameter adjustment, and automated control reduces manual intervention, further improving the operating stability of the equipment.
Applications
• Municipal wastewater treatment: pre-treatment to meet sewer discharge limits and reduce downstream biological system load.
• Industrial wastewater treatment: covering industries such as petrochemicals, pulp and paper, food and beverage, and dairy processing, removing sludge and grease, and refining biological treatment effluents.
• Special water treatment: high-salinity water purification, low-temperature and low-turbidity water source treatment, and efficient removal of algae and organic matter.
Structure Diagram

Parameters
|
Model |
Capacity (m³/h) |
Dissolved Air Volume (m³/h) |
Main motor (kW) |
Aerated motor (kW) |
Scraper motor (kW) |
Total power (kW) |
|
GF-1 |
0.5-1 |
0.3-0.5 |
0.55 |
0.55 |
0.18 |
1.28 |
|
GF-2 |
1-2 |
0.5-0.8 |
0.55 |
0.55 |
0.18 |
1.28 |
|
GF-3 |
2-3 |
1.0-1.5 |
1.1 |
0.55 |
0.37 |
2.02 |
|
GF-5 |
3-5 |
1.5-2.0 |
1.1 |
0.55 |
0.37 |
2.02 |
|
GF-10 |
5-10 |
3.0-4.0 |
1.5 |
0.75 |
0.37 |
2.62 |
|
GF-15 |
10-15 |
4.0-5.0 |
2.2 |
0.75 |
0.37 |
3.32 |
|
GF-20 |
15-20 |
5.0-7.0 |
2.2 |
0.75 |
0.37 |
3.32 |
|
GF-30 |
20-30 |
8.0-12 |
3 |
0.75 |
0.37 |
6.62 |
|
GF-40 |
30-40 |
10-15 |
5.5 |
0.75 |
0.37 |
6.62 |
|
GF-50 |
40-50 |
15-18 |
7.5 |
1.5 |
0.37 |
9.37 |
|
GF-60 |
50-60 |
18-20 |
7.5 |
1.5 |
0.37 |
9.37 |
|
GF-70 |
60-70 |
20-25 |
11 |
2.2 |
0.55 |
13.75 |
|
GF-80 |
70-80 |
25-30 |
11 |
2.2 |
0.55 |
13.75 |
|
GF-100 |
80-100 |
35-40 |
15 |
2.2 |
0.55 |
17.75 |
|
GF-150 |
120-150 |
40-50 |
15 |
2.2 |
0.55 |
17.75 |
|
GF-200 |
180-20 |
70-80 |
22 |
4 |
1.1 |
27.10 |
Packaging


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