QDEVU® Cavitation Air Flotation Machine Waste Water Treatment

QDEVU Air Flotation System can effectively remove the light flocs, flocculated colloidal substances, oil substances, etc. that are difficult to precipitate in wastewater,achieve the purpose of solid-liquid separation.

QDEVU Cavitation Air Flotation(CAF) system, also known as the CAF system, is a kind of dissolved air floatation machine (TDAF) for wastewater treatment applications. The cavitation air flotation is a method or process of generating air bubbles to remove the flocs. Cavitation air flotation machines produce a large number of fine air bubbles in wastewater that can adhere to the flocs and make the total specific gravity of impurities smaller than that of water. Then, the impurities will float on the surface of the water relying on buoyancy, thus achieving a solid-liquid.

The Cavitation Air Flotation utilizes a rotary cutting impeller to rotate at a really large rate under the running of a motor. The centrifugal force draws air from the impeller rapidly to produce atomized bubbles. The negative pressure develops in the impeller, and the air is drawn from the intake pipe. With the stirring of the impeller, the air is crushed into fine bubbles. After being thoroughly mixed with water, these bubbles are thrown on the blades and stabilized by the fairing plate. After continuing to flow, they stabilize and rise vertically in the flotation cell. Fine air bubbles adhere oil and suspended matter to the water, forming floating sludge with lower specific gravity than water, thereby separating them from the water surface. That’s how the cavitation air flotation system purifies wastewater. 

The working principle of traditional pressurized dissolved air flotation methods is to rely on a pump to recirculate a part of the purified water into the dissolved air tank after the air floatation and at the same time to pressurize the air through the pressure of air compressors or ejectors. In a dissolved gas tank, air is dissolved in water under a certain pressure. Then, the pressure of the dissolved gas was returned to normal pressure by a release device, and a large number of fine air bubbles were released to adhere to the floc. Therefore, the floc in raw water can be removed due to the adhesion of air bubbles. 

APPLICATIONS

• Oily wastewater in petrochemical processing industry
• Oily wastewater and reinjection water in oil exploitation industry
• Slaughter wastewater treatment in meat processing industry
• Treatment of grease wastewater in dairy processing industry
• White water treatment in pulp manufacturing and paper industry
• Treatment of oily wastewater in machinery processing industry

FEATURE

• NO need of reflux pump, air compressor and pressure vessel.
• Save operating cost, floor space and investment cost.
• Simple, compact and maintenance-free.
• Especially suit for oily wastewater treatment.

ADVANTAGE

• It is easy to install, operate and quick start
• Its compact rectangular design in AISI 304 or 316 AIS
• Easy access to all moving parts
• Large capacity of 3 to 200 m3 / h
• No installation of underground pipes need
• Its compact rectangular design facilitates flexible installation
• Minimum maintenance time; cleaning nozzle or nozzles is not required.
• No need air compressor or pumps or pressure tanks
• Flotation equipment are custom made.

CONTACT US FOR MORE DETAILS ABOUT WASTEWATER TREATMENT SOLUTION.

If you have specific requirements, contact us about our custom air flotation system.