What is DAF?

At the core of our processing operations is advanced Dissolved Air Flotation (DAF) technology — the industry standard for separating fats, oils, grease (FOG), and suspended solids from high-strength waste streams.

DAF is not simply a piece of equipment; it is the central separation engine that allows us to efficiently process both transported industrial wastewater and grease trap waste. By introducing microscopic air bubbles into conditioned wastewater, DAF systems attach to FOG and fine solids, lifting them to the surface for controlled removal. The result is rapid, high-efficiency separation that gravity settling systems alone cannot achieve.

For industrial wastewater generators, this means effective pretreatment, reduced suspended solids, lower BOD/COD loads (Biochemical Oxygen Demand/Chemical Oxygen Demand), and improved compliance with municipal discharge requirements. For grease trap waste processing, it means concentrated brown grease recovery, reduced water volume, improved dewatering performance, and cleaner downstream handling. DAF is essential for industrial wastewater processing and grease trap waste processing.

Our DAF system operates as part of a fully integrated treatment process designed specifically for high-FOG, high-solids waste streams. It enables us to:

By combining engineered process control with high-capacity DAF separation, we transform difficult waste streams into manageable, compliant, and recoverable materials — delivering operational efficiency for our clients and environmental protection for the communities we serve.

How does Dissolved Air Flotation (DAF) work?

Dissolved Air Flotation (DAF) is a high-efficiency physical-chemical separation process used to remove fats, oils, grease (FOG), suspended solids, and other floatable materials from wastewater.

Unlike simple gravity settling — which relies on heavy particles sinking — DAF works by floating contaminants to the surface for removal.

How the Process Works

  1. Pressurization & Air Dissolution
     A portion of clarified water is saturated with air under pressure.
  2. Microbubble Formation
     When that pressurized stream is released into the flotation tank, microscopic air bubbles form.
  3. Attachment to Contaminants
     The microbubbles attach to FOG droplets and fine suspended solids, reducing their density.
  4. Flotation & Skimming
     The bubble-contaminant clusters rise to the surface, forming a float layer that is mechanically skimmed off.
  5. Clarified Effluent Removal
     Treated water exits the system for further processing or discharge.

Why DAF Is So Effective for High-FOG Waste Streams

Grease trap waste and industrial food-processing wastewater often contain:

These materials do not reliably separate through gravity alone. DAF’s microbubble technology captures even finely dispersed particles, achieving significantly higher removal efficiencies than traditional settling tanks.

Although industrial wastewater and grease trap waste differ in composition and concentration, both require the same fundamental capability: reliable separation of fats, oils, grease, and suspended solids from water. At our facility, Dissolved Air Flotation (DAF) provides that core separation engine. By applying the same engineered flotation principles across two distinct waste streams, we deliver consistent performance, regulatory confidence, and efficient material recovery — regardless of the source or strength of the waste stream.

DAF for Industrial Wastewater Processing

Industrial wastewater — particularly from food and beverage manufacturing, food processing, commercial kitchens, and related operations — often contains elevated levels of suspended solids, emulsified oils, and organic loading. Without proper pretreatment, these streams can overwhelm municipal systems, trigger surcharge fees, or violate discharge permits.

Dissolved Air Flotation (DAF) serves as a highly effective pretreatment solution for these high-strength flows.

How DAF Supports Industrial Compliance

In industrial wastewater applications, DAF systems are designed to:

By attaching microbubbles to fine solids and oil droplets, DAF rapidly floats contaminants that would otherwise pass through traditional settling systems. The result is clarified effluent that is more consistent, more manageable, and better suited for discharge or secondary treatment.

Operational Benefits for Industrial Generators

For wastewater generators, DAF provides:

Because industrial wastewater characteristics can fluctuate throughout the day, DAF systems offer fast response and continuous separation capability — making them ideal for facilities that require reliable, engineered pretreatment.


DAF for Grease Trap Waste Processing

Grease trap waste presents a different — and often more challenging — separation problem. It is typically thick, highly concentrated in FOG, and loaded with solids, food particles, and organic sludge. Gravity settling alone is insufficient to separate these complex mixtures efficiently.

This is where DAF technology becomes essential.

High-FOG Separation and Concentration

In grease trap waste processing, DAF systems are used to:

By injecting microbubbles into conditioned grease trap waste, DAF systems lift fats and fine solids to the surface, creating a concentrated float layer that can be removed for further processing or recovery.

Volume Reduction and Resource Recovery

One of the primary advantages of DAF in grease trap operations is volume reduction. By separating FOG and solids from water, the process:

Because grease trap waste is highly variable and often contains emulsified fats, DAF’s ability to capture fine particles and dispersed oil droplets makes it far more effective than passive separation methods.

In our facility, DAF serves as the central separation stage that transforms unstable, high-FOG waste into concentrated recoverable material and clarified water suitable for compliant discharge or further treatment.