WesTech Engineering, Inc.

- Dissolved Air Flotation (DAF) Clarifiers and Thickeners

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WesTech builds a complete line of Dissolved Air Flotation (DAF) and Dissolved Nitrogen Flotation (DNF) equipment for both municipal and industrial applications. The equipment incorporates many superior designs, both mechanical and operational.

Dissolved Air/Nitrogen Flotation is used in applications where the specific gravity of the solids or contaminants is very close to or less than 1.0. Dissolved air or nitrogen provides the driving force for separation. The gas is dissolved into a liquid (water) under pressure in a specially designed saturation tank. The saturated liquid flows under pressure to the mechanism. The pressure is then released by the back pressure control valve near the influent.

The sudden release of pressure causes the gas to come out of solution and form microscopic bubbles. These microscopic bubbles adhere to the incoming solids and form a buoyant blanket which rises to the surface for removal by mechanical means. The two main components of dissolved air/nitrogen flotation are the flotation mechanism and the pressurization system.

Processes:

Industrial Applications:

  • Refineries
  • Food Processing
  • Chemical Processing
  • Water Treatment
  • Laundry
  • Power Plants
  • Pulp and Paper

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