MEMBRANE BIO-REACTORAN EXCELLENT OPTION FOR WASTE WATER TREATMENT

UNDER GUIDANCE OF– Dr. S. M. ChavanBy Pratiksha A. Patil Roll No. 500904

IntroductionUrban 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.

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

MBR membrane configurations MBR Configuration:-

(a) multi-tube (MT), (b) hollow fiber (HF) and (c) flat sheet (FS).

Process configuration Two main process configuration of biomass rejection MBRs are

1) Submerge or immersed MBR 2) External or Side-stream MBR

Treatment Process and Basic Design Principles

Parameters affecting the membrane characteristics in MBR

1) Physical parameter• Pore size and distribution.• Porosity/roughness.• Membrane configuration.2) Chemical parameters• Hydrophobicity.• Materials.

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 Method1. 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

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 8662682-5428

COD in Between 4245 1484 2262-4607

BOD5 in Between 2383 7761282-3482

BOD5 in Between 1760 750617-3246

Avg BOD5/COD value is 0.6 Avg BOD5/COD value is 0.41

Result

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.

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.

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-sitetreatment applications. Consistent nutrient removal is possible with MBRsystem…..Water reuseMBR is more effective in treating wastewaters that arechallenging for conventional biological treatment systems.

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