DAF Units: Replacing Grease Arrestors for Better Restaurant Wastewater Management

Sludge thickener tank in the waste water treatment plant

Managing wastewater in the restaurant industry can be a significant challenge. Cooking grease and oil can accumulate in pipes, causing blockages and damage to equipment. Grease arrestors are devices that capture grease and oil and prevent them from entering the wastewater system. Dissolved Air Flotation (DAF) units are a modern and more efficient technology that restaurants can use to replace their current grease arrestors.


DAF units are a type of wastewater treatment system that separates grease, oils and other suspended solids from wastewater using tiny air bubbles. They function by introducing pressurised air into the wastewater, causing the particles to float to the surface. When the particles reach the surface, they can be skimmed off and properly disposed of. DAF units are far more efficient than traditional grease arrestors and provide numerous advantages.

Increased Efficiency


DAF units are much more efficient at separating grease and oils from wastewater than grease arrestors. They can remove up to 99% of grease and suspended solids, while grease arrestors can only capture around 50% to 70%. This means that restaurants can avoid costly blockages and repairs due to grease buildup, which can save them both time and money.


Improved Environmental Performance


By using a DAF unit, restaurants can significantly reduce their impact on the environment. Grease and oil can have a harmful effect on the environment if they are not disposed of properly. DAF units not only capture these substances but also help to prevent them from entering the wastewater system, which can have a positive impact on the environment.


Better Compliance


Using a DAF unit can help restaurants to comply with regulations related to wastewater discharge. In many jurisdictions, there are strict regulations around the amount of grease and other suspended solids that can be discharged into the wastewater system. By using a DAF unit, restaurants can ensure that they are complying with these regulations and avoid fines and penalties.


Lower Maintenance Costs


DAF units require less maintenance than grease arrestors. Grease arrestors need to be cleaned regularly and the grease and oil that are captured need to be disposed of properly. DAF units, on the other hand, are self-cleaning, which means that they require less maintenance. This can help restaurants save money on maintenance costs over time.


Better Long-Term Investment


While the initial investment in a DAF unit may be higher than that of a grease arrestor, it can be a better long-term investment. DAF units are more efficient and require less maintenance, which means that they can save restaurants money in the long run. Additionally, as regulations around wastewater discharge become more stringent, DAF units may become a requirement, so investing in one now can help restaurants stay ahead of the curve.


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

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