All info collected from different sources. Please use only for educational purposes.

1. Rotating Biological Contactor(RBC)
Presented By :
Name: Anik Banik
ID. No – 1606034
Reg. No -3445
Faculty Of Biotechnology And Genetic Engineering,
Sylhet Agricultural University,Sylhet-3100

2. • RBC is a fixed film, aerobic, biological wastewater
treatment system.
• The primary function of these bio-reactors is the
reduction organic matter.
Figure : A Rotating Biological Contactor
WHAT is RBC

3. COMPONENTS
Figure : Components Of RBC

4. OBJECTIVES
The principle objective of industrial wastewater
treatment is generally to allow industrial effluents to
be disposed of without danger to human health or
unacceptable damage to the natural environment.
To manage water discharged from homes,
businesses and industries to reduce the threat of water
pollution .

5. Pretreatment
Primary
Treatment
Rotating
Biological
Contactors
Secondary
ClarifiersSolids Handling
Disinfection
RBC FLOW SCHEME
5
Influent
Effluent

6. RBC CONTROLLING
PARAMETERS
6
 Organic loading and Hydraulic loading rate
 Biomass
 Speed
 Dissolved Oxygen (DO)
 Temperature

7. SOME FACTS ABOUT DESIGNING
RBC
Key considerations:
 Mass transfer of oxygen and substrate to the
microorganisms growing on the discs.
 Overall mass of microorganisms in the system in
relation to the BOD, ammonia, and nitrogen.
First stage limited
by oxygen transfer,
organic loading
must be limited.
The overall RBC
surface area is
then dependent on
the effluent results
required.
Determined using
2 dimensional
mass transfer
models
More stages may
be required for
nitrification
(ammonia to
nitrate).
Submerged discs
are used to
achieve
denitrification
(nitrate to nitrogen
gas).

8. APPLICABILITY
High removal of biodegradable organic pollutants
Domestic black or greywater
High strength industrial waste water (dairies,paper
mills,food industry,textile,pulp)
Sewage water

9. formation
Low space
requirement
ADVANTAGES
Low energy
requirements
Well drainable
excess sludge
Simple
operation
Minimum
maintenance
Reliable
liquid/solids
separation
No risk of
channelingLow sludge
production

10. formation
Limited experience
and training
DISADVANTAGES
Sensitivity to
industrial
wastes
Endless
electricity
needed
Lack of
flexibility
Not all materials
are locally
available
High
operation
cost
Odour
problem may
occur
Must be
protected
environmental
factors

11. CONCLUSION
 The principle objective of wastewater treatment is
generally to allow human and industrial effluents to be
disposed of without danger to human health or
unacceptable damage to the natural environment .the
RBC process is most acceptable wastewater process
because of it’s benefits.

12. THANK YOU