How a Dissolved Air Flotation Unit Works 

A dissolved air flotation unit mixes a pressurised stream of recycled treated wastewater with a solution containing tiny air bubbles. The air bubbles cling to the solids in the water, making them buoyant and driving them to the surface for removal. The remaining clarified effluent exits the DAF unit for treatment or reuse.

SWA Water’s compact and highly efficient dissolved air flotation (DAF) units are designed with flexibility in mind. We’ve built hundreds of DAF units that can be customised to fit any size factory, from small food processing plants to large-scale abattoirs. Our unique and patented pressure air saturation pipe is used in the DAF unit recycling system to create microfine flotation air bubbles, which improves the separation of solids, fats and oils from the water phase.

What they mean for water treatment challenges

DAF units remove suspended solids, fats, oils and greases from wastewater very effectively, providing a more efficient solution compared to traditional clarifiers and other sedimentation systems. This makes them ideal for industrial pre-treatment systems, as well as providing cost-effective solutions to more complex water treatment issues. Our DAF units’ unique design makes them simple to install and maintain, while their efficient operation ensures that users benefit from a significant cost saving when compared to more traditional wastewater treatment methods.

DAF units are also ideal for the pre-treatment of municipal and industrial wastewater before discharge into rivers and lakes. Making them an essential component of any water treatment system, as they can remove a wide range of problematic pollutants that would otherwise enter the environment. The common pollutants removed by DAF units include suspended solids, oils and grease, heavy metals, phosphates and other organic chemicals. The use of these systems can also help to reduce the odours often associated with wastewater treatment, as well as help to improve water quality in aquatic ecosystems.

SWA Water is the world’s leading industrial wastewater treatment company. Australian-owned and operated, with offices in Australia, Malaysia and Thailand, we deliver complete turnkey engineering solutions and products for wastewater treatment plants across a diverse range of industries. For more information on our wastewater treatment solutions, please contact us at info@swawater.com.au or visit our website at www.swawater.com.au.