Dissolved Air Flotation (DAF)

Dissolved Air Flotation (DAF), the use of micro-bubble flotation as a solid/liquid or liquid/liquid (or both) separation method, is widely used in industrial and domestic wastewater treatment processes. Dissolved Air Flotation is a well-established separation process that uses micro-bubbles as a carrier phase to remove solids, ions, macromolecules, fibers and other materials, BOD, COD reduction and for sludge thickening.

Air Flotation offers process advantages over such processes as filtration, precipitation, or adsorption using natural and synthetic sorbents and media. The advantages include better treated-water quality, rapid startup, high rate operation, and a thicker sludge, shorter sludge residence time in a secondary clarifier stage and flexibility in changing the operation parameters as the result of active sludge separation.

DAF bubbles are formed by a reduction of pressure of a super air saturated water stream at pressures usually higher than 3 atm. In industrial practice, the supersaturated water is forced through precise needle valves for air control, and clouds of 0.02–0.10 mm bubbles in diameter are subsequently produced and mixed with the incoming waste stream. Once the saturated stream pressure is reduced and the two streams mixed the bubbles attach to the materials being separated and then floats to the water surface. Modern flotation devices and schemes exhibit both high throughput and efficiency.

Products removed: solids, oils, fuels (vehicle/jet), fuel oils, hydraulic fluids, immiscible machining oils, lube oil, transmission fluid, vegetable based oils, animal/vegetable by-products and many other products.

Posted in Product, Wastewater System Components, Wastewater Treatment Systems | Tagged ipw

Dissolved Air Flotation (DAF)

MAE2 has the skills and experience to build industry-leading equipment to stop and reverse environmental damage, for far less than you might imagine. Self contained, transportable, and rugged systems are backed by service and technology.

In addition to new custom-built systems, MAE2 also provides equipment rental and leasing, system refurbishment and used systems sales to fit your needs and budget.

MAE² has the skills and experience to build industry-leading equipment to stop and reverse environmental damage, for far less than you might imagine. Self contained, transportable, and rugged systems are backed by service and technology.

In addition to new custom-built systems, MAE² also provides equipment rental and leasing, system refurbishment and used systems sales to fit your needs and budget.