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CAF Cavitation Air Flotation
Cavitation Air Flotation Machine(CAF) is an advanced wastewater treatment equipment, mainly used to remove suspended solid, colloids and grease to achieve solid-liquid separation and liquid-liquid separation for industrial wastewater.
By dosing suitable flocculant and coagulant into wastewater, grease removal rate can be more than 95%, suspended solids removal rate can be more than 90%, and around 60% COD and BOD can be removed at the same time.
CAF Cavitation Air Flotation Machine is greatly different from DAF Dissolved Air Flotation Machine in its air dissolving method: One or several sets of CAF aerator(micro bubble generator) is installed in the aeration chamber of CAF machine. With the high speed rotation of impeller of CAF aerator under water, a vacuum zone is formed there and absorb the air above water surface into water and generate millions of micro bubbles.
These bubbles attach to, and form with, the solids or chemical flocculants entering the vessel, causing them to float to water surface where they are retained and forms scum layer, which is then subsequently removed by CAF skimmer.
| Model | Treat Capacity | Tank Length | Tank Width | Tank Depth | Aerator |
| (m3/h) | (m) | (m) | (m) | Quantity | |
| CAF-5 | 5 | 2.5 | 1 | 1.2 | 1 |
| CAF-10 | 10 | 3 | 1.2 | 1.2 | 1 |
| CAF-15 | 15 | 4 | 1.2 | 1.2 | 1 |
| CAF-20 | 20 | 4.5 | 1.2 | 1.2 | 1 |
| CAF-35 | 30 | 4.3 | 1.5 | 1.8 | 1 |
| CAF-50 | 50 | 5.3 | 1.8 | 1.8 | 1 |
| CAF-75 | 75 | 6.5 | 2.4 | 1.8 | 1 |
| CAF-100 | 100 | 7.7 | 2.4 | 1.8 | 1 |
| CAF-150 | 150 | 11.1 | 2.4 | 1.8 | 2 |
| CAF-200 | 200 | 15.1 | 2.4 | 1.8 | 2 |
| CAF-250 | 250 | 16.7 | 2.4 | 1.8 | 2 |
| CAF-320 | 320 | 15.1 | 3.1 | 1.8 | 3 |
| CAF-400 | 400 | 16.7 | 3.6 | 1.8 | 4 |
| CAF-500 | 500 | 20.9 | 4.3 | 1.8 | 4 |
1.
CAF cavitation air flotation is an economical and reliable wastewater treatment equipment, mainly used as pretreatment process to remove suspended solids.
2.
High adaptability: It is a physical separating process, suitable for different water quantity and water quality at different working peroid.
3.
Save investment:Compare to DAF system, cavitation air flotation machine don't need any of pressure vessel, air compressor, circulating pump or jet, greatly reducing investment.
4.
Affordable:Cavitation air flotation machine is simple in structure, only a few ancillary civil work is required, can be installed above ground, underground or at high altitude position.
5.
Low operating costs:Low power requirement, easy to operate and maintain, saving labor.
6.
High efficiency:Sludge will be removed automatically and continuously from wastewater, low sludge moisture content greatly reduce the subsequent sludge disposal costs.
7.
Reduce odor: It is an aerobic process, sludge odor problem is effectively resolved.
Details
* The material of the DAF could be carbon steel, or stainless steel
* CAF function is similar with DAF in function , the difference is application. CAF mainly to seprate water with oil.
Application
CAF cavitation air flotation is widely used in wastewater purification to remove oil, grease, fats and other suspended solids to meet a variety of treatment goals including:
◆ Product recovery and reuse
◆ Pretreatment to meet sewer discharge limits
◆ Pretreatment to reduce loading on downstream biological treatment systems
◆ Polishing of biological treatment effluent
◆ Thickening of biosolids
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