一、Product Introduction
Dissolved Air Flotation (DAF) is an efficient separation equipment designed by Linglan Environment specifically for removing suspended solids, oils, colloidal particles and other pollutants from wastewater. DAF effectively separates and removes pollutants in water by releasing dissolved gases into tiny bubbles and utilizing the buoyancy of the bubbles. This device is easy to operate, stable in operation, and suitable for wastewater treatment in various industries. It is one of the key equipment in sewage pretreatment and deep treatment.
二、Working principle
The core principle of DAF equipment is dissolved air release and air flotation separation. Firstly, a certain amount of air is dissolved in water to form dissolved water, which is then released under reduced pressure to produce a large number of tiny bubbles (typically 20-50 micrometers in diameter). These bubbles combine with suspended solids, oils, and other pollutants in the wastewater to form floats and rise to the surface. Finally, impurities floating on the surface are removed by a scraping device, and clean water is discharged from the lower part of the equipment to achieve solid-liquid separation.
三、Model specifications
Linglan Environment provides various specifications of DAF equipment to meet the needs of sewage treatment of different scales. The following are common models and main parameters, and DAF devices can also be customized:
model | specifications（T/H） | size（mm） | Equipment weight（T） | Installed power（kw） | Operating power（kw） |
LADAF-1 | 1 | 2000×500×150 | 1.2 | 1.65 | 1.3 |
LADAF-5 | 5 | 3000×1000×1500 | 3.0 | 4.80 | 4.5 |
LADAF-10 | 10 | 3300×1200×2300 | 4.2 | 5.0 | 4.5 |
LADAF-25 | 25 | 5000×1500×1500 | 5.8 | 5.5 | 5.5 |
LADAF-50 | 50 | 6500×2000×2500 | 7.3 | 8.75 | 7.5 |
LADAF-100 | 100 | 8500×3000×2600 | 12.5 | 16.5 | 15.0 |
LADAF-150 | 150 | 10000×3500×3000 | 17.0 | 21.5 | 19.5 |
LADAF-200 | 200 | 12500×3000×3000 | 28.0 | 27.0 | 23.0 |
四、Characteristics and advantages
1. Efficient solid-liquid separation: Through an efficient gas dissolution system, DAF equipment can quickly generate a large number of tiny bubbles, ensuring effective combination of pollutants and bubbles and improving separation efficiency.
2. Excellent effluent quality: DAF equipment has a high removal rate for pollutants such as suspended solids, oils, colloids, etc. After treatment, the effluent quality is clear and meets various industrial and municipal discharge standards.
3. Low energy consumption: The equipment adopts an optimized gas dissolution system and low-energy pumps, significantly reducing operating energy consumption and overall operating costs of wastewater treatment.
4. Compact structure and easy operation: DAF equipment has a compact design, small footprint, high integration, easy installation and maintenance, simplified operation process, and reduces manual intervention.
5. Corrosion resistance of materials: The equipment is mainly made of carbon steel or stainless steel, which has good corrosion resistance and is suitable for the treatment of various acidic and alkaline wastewater, extending the service life of the equipment.
6. Strong adaptability: The equipment can adapt to different water quality changes, especially suitable for the treatment of high concentration organic wastewater and oily wastewater, and is widely used in industrial and municipal fields.
五、application area
Efficient dissolved air flotation equipment (DAF) is widely used in the following fields:
1. Food processing wastewater treatment: Suitable for wastewater pretreatment in the food industry such as dairy products, slaughter, and meat processing, effectively removing pollutants such as oil and suspended solids.
2. Chemical wastewater treatment: used in industries such as chemical, petroleum, and pharmaceuticals to remove oil, colloidal particles, and suspended solids from wastewater during the treatment process, improving the effectiveness of subsequent treatment processes.
3. Paper wastewater treatment: In the paper industry, DAF equipment is used to remove pulp, ink, and fibers, improving the biodegradability and treatment efficiency of wastewater.
4. Municipal sewage treatment: DAF equipment is commonly used in the primary and advanced treatment stages of municipal sewage treatment, which helps to improve the overall treatment capacity of sewage treatment plants.
5. Petroleum wastewater treatment: In the treatment of petroleum extraction and refining wastewater, DAF equipment can effectively separate oil substances and suspended particles in water, protecting downstream equipment and processes.
