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Dissolved Air Flotation Systems (DAF)

Dissolved Air Flotation Systems (DAF)

 

What is a DAF system?

The Dissolved Air Flotation (DAF) system is an essential piece of equipment for solid-liquid separation in industrial and municipal wastewater treatment.

DAF technology is designed to effectively remove:

  • Total Suspended Solids (TSS)
  • Biological and Chemical Oxygen Demand (BOD/COD)
  • Fats, Oils, and Grease (FOG)

It is considered the primary pretreatment method for effluent clarification.

 

How does a DAF system work?

A DAF unit injects fine air bubbles into the wastewater under high pressure. Once the pressure is released:

  • The microbubbles attach to suspended particles, lifting them to the surface
  • A thick layer of primary sludge forms at the top
  • An automatic surface scraper removes this sludge, while heavier particles settle and are discharged through a timed valve

To enhance efficiency, polymers and flocculants are typically added before flotation.

The entire system is fully automated and controlled by an industrial programmable logic controller (PLC).

 

Advantages of DAF Systems

  • Significant reduction of suspended solids load
  • Adaptable to various types of industrial effluents
  • Low operating costs
  • Full automation using Simatic S7 PLC

 

Our Standard DAF Models

Model

Flow Rate (m³/h)

Tank Material

Lamellas

Inclination (°)

Scraper Type

Dimensions (L×W×H)

PLC Controller

WW-DAF/05/IS

5

SS304/316

HDPE/PVC

55–60

Plastic

3.0 × 1.2 × 1.5 m

Simatic S7

WW-DAF/10/IS

10

SS304/316

HDPE/PVC

55–60

Plastic

4.0 × 1.2 × 2.0 m

Simatic S7

WW-DAF/20/IS

20

SS304/316

HDPE/PVC

55–60

Plastic

5.8 × 2.1 × 2.0 m

Simatic S7

WW-DAF/40/IS

40

SS304/316

HDPE/PVC

55–60

Plastic

6.5 × 2.1 × 2.2 m

Simatic S7

 

Custom Fabrication
We also offer tailor-made DAF systems to meet the specific requirements of each client.

 

Why Choose Our DAF Technology?

With our extensive expertise in wastewater treatment, we ensure:

  • Maximum performance
  • Minimal maintenance
  • Easy integration into your existing plant

📩 Contact us for a personalized study of your dissolved air flotation needs.