May 14, 2025

Learn About SWA Water’s World-Class DAF Range

Here at SWA Water, we specialise in engineering DAF wastewater treatment solutions and other advanced flotation technologies that support industries across Australia and globally. We understand that managing industrial effluent is not only vital for environmental compliance but also for optimising operations and resource efficiency. That’s why we’ve developed a comprehensive commercial range of flotation units, each designed to tackle specific wastewater challenges with ingenuity and robust performance. Let’s look into the capabilities and benefits of our Dissolved Air, Gas, and Nitrogen Flotation technologies.

DAF – Dissolved Air Flotation Units: The Workhorse

Our Dissolved Air Flotation (DAF) units are a cornerstone of our commercial range, renowned for their versatility and effectiveness in removing a broad spectrum of pollutants. In a DAF system, air is dissolved under pressure into a portion of the treated effluent, creating a stream saturated with microscopic air bubbles. When this “white water” is introduced into the main wastewater flow, these bubbles attach to suspended particles, oils, and greases, causing them to float to the surface.

Benefits of SWA Water’s DAF Units:

⦁ Efficient Removal: Effectively separates a wide range of contaminants, including suspended solids, oils, greases, and some emulsified substances

⦁ High Flow Rates: Capable of handling significant volumes of wastewater.

⦁ Compact Footprint: Often requires less space compared to traditional sedimentation tanks.

⦁ High Sludge Concentration: Produces a concentrated sludge, reducing disposal volumes.

⦁ Versatile Applications: Used across numerous industries, as we’ll explore later.

DGF – Dissolved Gas Flotation Units: Tailored Performance

For specific applications where air might not be the optimal flotation medium, our Dissolved Gas Flotation (DGF) units offer a tailored solution. Similar in principle to DAF wastewater treatment solutions, DGF units utilise other gasessuch as natural gas or process-specific gases dissolved under pressure to create the microbubbles. This approach can be particularly advantageous when dealing with certain types of emulsions or when inert atmospheres are required for safety or process reasons.

Benefits of SWA Water’s DGF Units:

⦁ Optimised for Specific Contaminants: Can offer enhanced removal efficiency for particular pollutants.

⦁ Safety Considerations: Suitable for environments where using air might pose a risk.

⦁ Process Integration: Can be integrated with specific industrial processes where certain gases are already in use.

DNF – Dissolved Nitrogen Flotation Units: Inert Separation

In applications where oxidation is a concern or an inert atmosphere is required, our Dissolved Nitrogen Flotation (DNF) units provide a reliable solution. By dissolving nitrogen gas under pressure, these units create microbubbles that effectively float contaminants without the risk of unwanted reactions with oxygen. This is particularly relevant in industries handling sensitive materials or where preventing oxidation is crucial for product quality or safety.

Benefits of SWA Water’s DNF Units:

⦁ Prevents Oxidation: Ideal for treating wastewater containing substances susceptible to oxidation.

⦁ Inert Environment: Ensures a non-reactive separation process.

⦁ Enhanced Product Quality: Prevents contamination or degradation of valuable materials in the wastewater stream.

Integral or Pre – FAF Oil Separation Plate Packs: Enhanced Oil Removal

To further enhance the performance of our flotation units, we offer the option of integrating or including pre-fabricated Flotation Aid Filtration (FAF) oil separation plate packs. These plate packs are strategically designed to promote the coalescence of oil droplets before they enter the main flotation chamber, improving the efficiency of oil removal and reducing the load on the subsequent flotation stage.

Benefits of Integral/Pre-FAF Oil Separation Plate Packs:

⦁ Improved Oil Removal Efficiency: Enhances the separation of free and emulsified oils.

⦁ Reduced Load on Flotation Unit: Optimises the performance and longevity of the main flotation system.

⦁ Lower Chemical Consumption: Can reduce the need for emulsion-breaking chemicals.

Chemical Coagulation / Flocculation Units: Optimising Particle Aggregation

In many industrial wastewater streams, the suspended particles and emulsified substances are too small or too stable to be effectively removed by flotation alone. Our Chemical Coagulation/Flocculation Units are designed to address this challenge. By introducing carefully selected chemicals, these units destabilise the fine particles and cause them to aggregate into larger, heavier flocs that are more readily captured by the flotation process.

Benefits of Chemical Coagulation / Flocculation Units:

Enhanced Removal of Fine Particles: Improves the separation of colloidal and finely dispersed solids.
Improved Flotation Efficiency: Creates larger, more buoyant flocs for easier removal.
Treatment of Complex Wastewater: Enables the effective treatment of wastewater with challenging characteristics.

Emulsion Breaking Units: Tackling Stubborn Emulsions

Emulsions, where oil and water are intimately mixed, can be particularly difficult to treat. Our Emulsion Breaking Units are specifically designed to destabilise these stubborn mixtures, allowing the oil and water phases to separate effectively. This can involve chemical treatment, heating, or other advanced techniques, depending on the nature of the emulsion.

Benefits of Emulsion Breaking Units:

Effective Separation of Emulsified Oils: Breaks down stable oil-water mixtures.
Improved Performance of Downstream Units: Ensures efficient operation of subsequent treatment stages.
Resource Recovery: Allows for the recovery of valuable oil components in some applications.

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Industries We Serve: A Testament to SWA Water’s Versatility

Two industrial workers observe oil separation equipment at a processing facility under a bright sky, showcasing the innovative technology used for efficient oil separation. The setup, including hoses and machinery, highlights SWA Malaysia Leadership Success in driving operational efficiency in the oil and gas industry.

Our DAF wastewater treatment solutions and complementary systems are trusted by a wide range of industries, including:

Abattoirs and Poultry Processing: Removing fats, oils, and suspended solids from processing wastewater.
Automotive Manufacture: Treating wastewater containing oils, greases, and heavy metals.
Biodiesel Production: Separating glycerol and other by-products from biodiesel.
Chemical Manufacturing: Removing various organic and inorganic pollutants.
Coal Washing: Clarifying process water and removing coal fines.
Commercial Kitchens: Removing fats, oils, and suspended solids from kitchen wastewater.
Food & Dairy Processing: Removing fats, oils, and suspended solids from production wastewater.
Cosmetics and Pharmaceuticals: Treating wastewater containing oils, solvents, and active ingredients.
Ice Cream Manufacturing: Removing fats, sugars, and cleaning agents.
Metal Finishing: Removing oils, greases, and heavy metals from plating and cleaning processes.
Oil Refineries: Separating oil and suspended solids from refinery wastewater.
Power Stations: Treating wastewater from cooling towers and other processes.
Tanneries: Removing suspended solids, dyes, and other pollutants from tanning effluent.
WAS Thickening (Waste Activated Sludge): Concentrating biological sludge to reduce disposal volumes.

Why Choose SWA Water for Your DAF Wastewater Treatment Needs?

At SWA Water, we’re dedicated to delivering the most effective, reliable, and sustainable flotation-based wastewater treatment solutions. Whether you need DAF, DGF, or DNF technologies, or supporting systems like chemical treatment or oil separation, we tailor each solution to your unique operational needs.