AVFOGS Defined


FOG is really better defined as AVFOGS…which is a much more all–inclusive acronym for  Animal, Vegetable, Fats, Oil, Grease and Solids.

Fats, oil and grease are present in wastewater in 4 basic forms...

  • Free oil
  • Mechanically emulsified oil
  • Chemically emulsified oil
  • Dissolved oil

Solids in wastewater are present in 2 basic forms

  • Solid particles
  • Soluble particles

Where do AVFOGS come from? The sources are wide ranging…

  • They are naturally present in a number of goods
  • They are a natural consequence of cooking
  • They are used as cooking mediums and incorporated into ingredients