The AGF process uses existing anaerobic reactors to improve the digestion process. Anaerobic bacteria are conserved by concentrating the bacteria and returning them to the digester. The digester's bacterial and solids concentration are maintained at a higher level. The percentage of solids converted to gas is significantly improved.
More methane gas is produced.
Waste Solids Solids are periodically wasted from the thickened return solids stream. Since the waste solids are highly concentrated, only a small volume must be wasted. The concentrated waste solids are also charge neutralized. The time and polymer required to further dewater the waste solids are substantially reduced. Flotation is a natural non-disruptive anoxic process which does not adversely affect bacterial viability.