Skid Mounted SAF Unit
SAF Generators

Which is more efficient – Suspended Air® Flotation (SAF™) or Dissolved Air Flotation (DAF)?

Suspended Air® Flotation (SAF™) is the next generation of solids removal for industrial and municipal waste streams.  This process is capable of greater solids removal than a conventional dissolved air flotation (DAF) system while using a footprint up to ten times smaller.  How does SAF achieve these better efficiencies?  The process uses an externally-generated bubble suspension with high air content. Each bubble is covered with a chemically active film which strongly attaches to the flocculated solids in the water being treated, achieving high rate and efficient flotation. DAF, by contrast, uses high pressure to dissolve a small amount of air in water with no chemically active agent, and depends on physical entrapment and a weak surface bond to float the flocculated solids.


Benefits of SAF™ = Increased Efficiency:


  • Smaller footprint
  • Less energy use
  • Removes more solids
  • More flexible operationally
  • More cost effective


This technology can be a stopgap for many clients who need a cost effective, easy to operate solution to their solids handling problems.  Whether you are a municipal client seeking to treat in-plant waste or recycle streams or improve your DAF’s performance; or an industrial client requiring pretreatment before sewer discharge, this technology offers many advantages for each unique scenario.


Learn more about SAF™ and watch these videos:


  1. Trade Show Float – demonstrates the separation of solids to the surface
  2. UC Davis – shows the actual system working with the flow of raw water that have separated from the solids that have floated to the surface


For more information, please visit www.heroninnovators.com.

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