The document discusses membrane bioreactors (MBRs), which combine a biological wastewater treatment process with a membrane filtration system. Some key points: - MBRs can achieve very high quality effluent with low levels of BOD, TSS, turbidity, and complete removal of viruses. They also have significant nutrient removal capabilities. - MBRs have configurations using multi-tube, hollow fiber, or flat sheet membranes. Submerged and external membrane configurations are common. - MBRs provide advantages over conventional wastewater treatment such as higher loading rates and more compact system sizes while producing very high quality effluent. However, they also have higher capital and operating costs due to

1. MEMBRANE BIO-REACTOR
RAHUL KUMAR
MT17MCL010

2. Introduction
Urban wastewater is usually treated by Conventional Activated Sludge
Process. MBR is improvement of CASP.
Membrane bioreactor (MBR) technology, which combines biological-
activated sludge process and membrane filtration has became more
popular, abundant, and accepted in recent years for the treatment of
many types of wastewaters
It is the combination of a membrane process like microfiltration or
ultrafiltration with a suspended growth bioreactor, and is now widely
used for municipal and industrial wastewater treatment with plant sizes
up to 80’000 population equivalents.

3. Why MBR?
The Highest, Consistent Effluent Quality
 BOD < 5 mg/L
 TSS < 2 mg/L
 Turbidity < 0.5 NTU
 Significant nutrient removal capability
 Complete virus removal
 Reduction of pharmaceutical byproducts

4. MBR membrane configurations
MBR Configuration:-
(a) multi-tube (MT), (b) hollow fiber (HF) and (c) flat sheet (FS).

5. Process configuration
Two main process configuration of biomass rejection MBRs are
1) Submerge or immersed MBR 2) External or Side-stream MBR

6. Treatment Process and Basic Design Principles

7. Mathematical Formula
where:
Rf(i) is the fouling resistance at operating conditions i, m−1;
RO(ref) is the fouling resistance at reference point O, m−1;
JC is the critical flux, L/m2 h;
JO(ref) is the reference permeate flux at point O, L/m2 h;
Ji is the permeate flux at operating condition i, L/m2 h;
Q(i) is the scouring aeration intensity at operating condition i, m3/h;
QO(ref) is the scouring aeration intensity at reference operating
condition O, m3/h;
l is the scouring aeration intensity exponent, which is approximately
−2.

8. Parameters affecting the membrane
characteristics in MBR
1) Physical parameter
• Pore size and distribution.
• Porosity/roughness.
• Membrane configuration.
2) Chemical parameters
•
•
Hydrophobicity.
Materials.

9. Cleaning Procedure & Reuse potential of MBR
 Cleaning Procedure of MBR:-
 Every six to twelve months
Requires chemical(s) cleaning
 Remove module(s)
 Reuse potential of MBR:-
Completely acceptable water.
After softening treatment use for industrial purpose.
Thus, large quantity of water can saved.

10. Advantages & Disadvantages
 The major ADVANTAGE of MBR:-
High quality effluent.
High loading rate capacity.
Reducing tertiary filtration and secondary clarifiers.
Reducing plant budget.
Easy operation
Easy modulation
 The major DISADVANTAGE of MBR:-
Increase capital cost (Membrane cost)
Relatively expensive to install and operate.
Membrane may be sensitive some chemical.
Require pre-treatment.
Frequent membrane monitoring and maintenance.
 Membrane fouling.

11. MBR Application
•Today MBR systems are most widely used in treatment of
wastewater (industrial and municipal) in many countries of the
world like USA, England, Germany, Norway, Denmark.
•MBRs are used for the treatment of chemical wastewater, oily
wastewater, Landfill Leach ate, Colour Industry, Leather Industry,
Dying Industry, Paper Industry, Dairy Industry, Hospitals and Lab
waste water Liquid, hazardous waste water, Waste Oil Processing,
Chemical pharmaceutical waste water, Tank cleaning waste water,
Groundwater redevelopment, Automobile Industry, Laundry
waste water, municipal wastewater and gray water

12. On going work & Conclusion
 Current status of MBR:-
About 250 currently working in various part of globe.
Japan use most MBR system are use for water recycling in building.
In India MBR use in hotel industries, residential township, and
housing complexes, gardening, flushing and other cleaning purpose.
 Conclusion:-
MBR is an attractive and feasible technology for on-site
treatment applications.
 Consistent nutrient removal is possible with MBR
system…..Water reuse
MBR is more effective in treating wastewaters that are
challenging for conventional biological treatment systems.

13.  The major ADVANTAGE of
MBR:-
 High quality effluent.
 High loading rate capacity.
 Reducing tertiary filtration and secondary clarifiers.
 Reducing plant budget.
 Easy operation
 Easy modulation
 The major DISADVANTAGE of
MBR:-
 Increase capital cost (Membrane cost)
 Relatively expensive to install and operate.
 Membrane may be sensitive some chemical.
 Require pre-treatment.
 Frequent membrane monitoring and maintenance.
 Membrane fouling.

14. References
 Membrane Bioreactor Published on SSWM Compiled by:--Beat Stauffer (seecon
international gmbh) , Dorothee Spuhler (seecon internationalgmbh)
 Authors: Thomas C. Schwartz and Brent R. Herring , Woodard and Curran
Incorporated Ricardo Bernal and Janet Persechino , GE.
 Chettiyappan visvanathan Environmental Engineer and Management program,
school of environment, research and development.
 Michael Moreau J&R Sales and Service Coalition for Buzards Bay’s 2011
Decision Makers Workshop Series March 24, 2011
 Membrane Bio-reactor for wastewater treatment 1st edition 2013 Dr. JixiangYang
and bookboon.com
 Simon Judd Centre for Water Science, Cranfield University, Cranfield,
Bedfordshire, MK43 0AL, UK
 Chia-Yuan Changa*, Jing-Song Changa, Saravanamuthu Vigneswaranb, Jaya
Kandasamyb a Department of Environmental Engineering and Science, Chia Nan
University of Pharmacy and Science, Tainan 717,Taiwan
 Shu-Fen Cheng a, Yi-Chao Lee b, Chih-Yang Kuo b, Ting-Nien Wu b, *a
Department of Environmental Engineering and Management, Chaoyang
University of Technology, 168 Jifeng E. Rd., Wufeng District, Taichung
41349,Taiwan, ROC b Department of Environmental Engineering, Kun Shan
University, 195 Kunda Rd., Yong-Kang District, Tainan 71070, Taiwan,ROC