Rotating Biological Contactor Rotating Biological Contactors, commonly called RBC’s, are used in wastewater treatment plants (WWTPs). The primary function.

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Presentation transcript:

Rotating Biological Contactor Rotating Biological Contactors, commonly called RBC’s, are used in wastewater treatment plants (WWTPs). The primary function of these bio-reactors at WWTPs is the reduction organic matter.

Rotating Biological Contactor (RBC) A suspended/fixed growth biological treatment processes used to consume organic matter (BOD) from wastewater. Consists of 2-4 m diameter disks, closely spaced on a rotating horizontal axis Disks are covered with a biofilm. The disks are only partially submerged in wastewater.

Rotating Biological Contactor (RBC) As the disk rotates the biofilm is exposed to the wastewater only part of the time. The rotation in and out of the wastewater serves to vary the feeding cycle (starve/gorge) of the bacteria and microorganisms that make up the biofilm. The shaft rotates about about 1-2 rpm (slowly). Some advantages: Less Upset, High Loading Rate, Nitrification/De-nitrification, Low O&M Cost, Durable Constructions,Odorless, No Noise

Rotating Biological Contactor (RBC) Flow Diagram of an RBC

Rotating Biological Contactor (RBC) Defective RBC’s at the Easton Wastewater Treatment Plant

Rotating Biological Contactor (RBC) Single RBC Single disk of an RBC