Rotating Biological Contactor - PowerPoint PPT Presentation


Title: Rotating Biological Contactor


1
Rotating Biological Contactor
  • Rotating Biological Contactors, commonly called
    RBCs, are used in wastewater treatment plants
    (WWTPs). The primary function of these
    bio-reactors at WWTPs is the reduction organic
    matter.

2
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.

3
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 OM Cost,
    Durable Constructions,Odorless, No Noise

4
Rotating Biological Contactor (RBC)
Flow Diagram of an RBC
5
Rotating Biological Contactor (RBC)
Defective RBCs at the Easton Wastewater
Treatment Plant
6
Rotating Biological Contactor (RBC)
Single RBC
Single disk of an RBC
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Rotating Biological Contactor

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Rotating Biological Contactor Rotating Biological Contactors, commonly called RBC s, are used in wastewater treatment plants (WWTPs). The primary function of these ... – PowerPoint PPT presentation

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Title: Rotating Biological Contactor


1
Rotating Biological Contactor
  • Rotating Biological Contactors, commonly called
    RBCs, are used in wastewater treatment plants
    (WWTPs). The primary function of these
    bio-reactors at WWTPs is the reduction organic
    matter.

2
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.

3
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 OM Cost,
    Durable Constructions,Odorless, No Noise

4
Rotating Biological Contactor (RBC)
Flow Diagram of an RBC
5
Rotating Biological Contactor (RBC)
Defective RBCs at the Easton Wastewater
Treatment Plant
6
Rotating Biological Contactor (RBC)
Single RBC
Single disk of an RBC
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