BBF employs physical and biological treatments using a single up-flow reactor

• Wastewater travels down from the influent water way located on top of the BBF reactor, and it enters the reactor at the bottom of the structure
• The hydraulic head difference creates an up-flow condition inside of the reactor and water first travels through the fixed media layer (anoxic zone) which is located at the bottom of the system
• Floating media layer is located in the middle of the reactor and is retained by strainer block
• Depending on the process air diffusers location relative to the floating media, oxic, anoxic, or oxic/anoxic conditions can be designed
• The effluent waterway conveys treated water from the system and the remaining water on top of floating media is used as backwash water source without requiring pump

Concrete Type

• Rectangular concrete structures
• For large volume flow
• Above ground or underground design

Vessel Type

• Cylindrical vessels (dual or quad unit)
• For small volume flow
• Outdoor or indoor installation