The document discusses membrane bioreactor (MBR) technology for wastewater treatment. MBR combines a biological wastewater treatment process with a membrane filtration process. It provides several advantages over conventional activated sludge including higher quality effluent with very low levels of contaminants, complete pathogen removal, and ability to reuse treated water. The document examines various MBR configurations, design considerations, operating parameters, case studies on MBR use in antibiotic manufacturing wastewater treatment, and concludes that MBR is an effective technology for wastewater treatment applications.

1. MEMBRANE BIO-REACTOR
AN EXCELLENT OPTION FOR WASTE WATER TREATMENT
UNDER GUIDANCE OF– Dr. S. M. Chavan
By Pratiksha A. Patil
Roll No. 500904

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

8. Case Study
• Objective :- To monitor chemical oxygen demand (COD), biological oxygen
demand (BOD5), suspended solids (SS), and antibiotic concentrations of
wastewater released from an antibiotic manufacturing factory.
• Material and Method
1. Raw Material:-This factory primarily produces Tienam, which contains
carbapenems. Tienam is the antibiotic containing a mixture of imipenem and
cilastatin at a 1:1 ratio w/w.
2.Membrane Bio-reactor/ Filtration Method

9. Imipenem wastewater Cilastain wastewater
PH 6.8-7.3 PH 6.8-7.3
Content Avg value Std deviation
mgL-1 mgL-1 mgL-1
Content Avg value Std deviation
mgL-1 mgL-1 mgL-1
SS in
between 23. 7 ---
16-32
SS in
Between --- ---
4-21
COD in
Between 3929 866
2682-5428
COD in
Between 4245 1484
2262-4607
BOD5 in
Between 2383 776
1282-3482
BOD5 in
Between 1760 750
617-3246
Avg BOD5/COD value is 0.6 Avg BOD5/COD value is 0.41
Result

10. 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.

11. Advantages & Disadvantage
 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.

12. Current Status & 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. References
 Membrane Bioreactor Published on SSWM Compiled by:--Beat Stauffer (seecon
international gmbh) , Dorothee Spuhler (seecon international gmbh)
 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. Jixiang Yang
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