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Rectangular DAF
DAF

Rectangular DAF

Product Details

Rectangular / Horizontal DAF is a dissolved air flotation system for primary wastewater treatment, helping separate FOG and SS and reduce BOD/COD with microbubbles that carry the sludge up to the water surface. It can reduce FOG/SS by more than 90%, BOD by more than 30% and COD by more than 20%, supporting flow rates of 1–1,000 m³/hr, and integrates the Coagulation–Flocculation system and the bubble generation unit into a single platform. The structure can be selected as either FRP-coated steel or SUS304/316.

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Key Features: Rectangular DAF
  • Horizontal tank with a large sludge separation surface area, supporting flow rates of 1–1,000 m³/hr
  • Reduces FOG/SS by more than 90%, BOD by more than 30% and COD by more than 20%
  • Integrates the Coagulation–Flocculation system into a single unit, saving space
  • Automatic surface skimmer unit
  • Automatic control with remote operation
  • Structure available in both FRP-Coated Steel and SUS304/316
Benefits: Rectangular DAF
  • Reduces the FOG/SS/BOD load entering the biological system so microorganisms work at full efficiency
  • Reduces pipe clogging
  • Brings effluent within discharge standards
  • Supports water reuse
  • Fast system start-up
Working Principle: Rectangular DAF
  • 1. Wastewater passes through coagulation-flocculation with chemicals (Polymer, PAC/caustic soda) to aggregate particles into flocs.
  • 2. Air-saturated water under high pressure releases micro-bubbles that attach to the flocs.
  • 3. The flocs float to the surface by buoyancy.
  • 4. A surface skimmer automatically removes the floating sludge while clarified water is discharged from below.
Supported Industries
  • Food processing
  • Slaughterhouses
  • Dairy plants
  • Oils and fats
  • Petrochemicals
  • Paper
  • Textiles
  • Pretreatment and water-recycling applications with high FOG and SS
Product Highlights
  • Horizontal tank supports high flow rates and has a large sludge separation area
  • Reduces FOG/SS by more than 90% in a single step
  • Integrates the Coagulation–Flocculation system and the microbubble generation unit into a single platform
  • Automatic operation, easy to install and quick to commission

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