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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 6
First page : (71) Last page : (79)
Article doi: http://dx.doi.org/10.18782/2320-7051.5997

Treatment of Dairy Industry Effluent using Membrane Bioreactor

S. S. Chandrasekhar1*, D. Srinath2, Nivedita Sahu3 and S. Sridhar4
1,3 and4Membrane separation Laboratory, Chemical Engineering Division
CSIR-Indian Institute of Chemical Technology, Hyderabad, India
2Department of Horticulture, College of Agriculture
Professor Jayashankar Telangana State Agricultural University, Hyderabad, India
*Corresponding Author E-mail: chandrasekhar.vit09@gmail.com
Received: 25.10.2017  |  Revised: 27.11.2017   |  Accepted: 29.11.2017  


The raw milk is processed into various milk products in the dairy industry like consumer milk, butter, cheese, ghee and other bi-products handled each day. The increased production of milk based food products by these industries leads to generation of large quantity of wastewater consisting of high levels of organic contaminants, which leads great damage to aquatic ecosystem. There are many methods available for treatment of dairy effluents generated from different dairy industries but among those, the application of membrane technologies has become an emerging arena. These applications are more energy efficient as compared to conventional methods. In the present study treatment of dairy industry effluent was performed using membrane bioreactor technology (MBR). Several physico-chemical parameters like pH, temperature, conductivity, turbidity, total dissolved solids (TDS) and chemical oxygen demand (COD) were assessed. Mixed microbial culture were used in side stream MBR (HF-UF) incorporated with UF10KDa MWCO membrane and found effective in reducing TDS from 4220 to 1590 ppm, turbidity from 32 to 3 FAU, conductivity from 11 to 2.7 S/m and COD from 6000 to 280 mg/L. Further analysis was studied by integrating MBR with RO membrane (graphical sketch).  The RO treated water revealed a TDS of 415 ppm, turbidity 1 FAU, conductivity 2.6 S/m and COD 150 mg/L. Only MBR treated effluent showed 95.33% COD, 62.3% TDS and 90.6% Turbidity, whereas MBR integrated with RO exhibited 97.5% COD, 90.2% TDS and 97% Turbidity reductions respectively. MBR integrated with RO treated water can be recycled for industrial purpose in cooling systems, groundwater recharge, recreational lakes, washing plant floor’s, aquaculture, cattle/poultry industry, green irrigation purposes and other indirect human uses etc.

Key words: Dairy Effluent, Membrane Bioreactor, COD rejection, Flux, Water recovery.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Chandrasekhar, S.S., Srinath, D., Sahu, N. and Sridhar, S., Treatment of Dairy Industry Effluent using Membrane Bioreactor, Int. J. Pure App. Biosci.5(6): 71-79 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5997