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The Hitachi fluidized bed biological treatment system is a treatment system that combines a fluidized bed that lets special carriers flow in the treatment tank with a contact oxidation tank for finishing. The system's highly activated biological membrane forms on the surface of the carriers and provides stable treated water. This method is effective for fast-multiplying microorganisms like bacteria that break down BOD.
|Activated sludge method
Biological treatment system
|BOD load||0.5 kg/m³/day||1.0-2.0 kg/m³/day|
|Amount of air for aeration||100%||75%|
Fluidized bed biological treatment system and carriers where microorganisms adhere