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Effect of percentage fill media on performance of moving bed biofilm reactor for dairy wastewater treatment

Author Affiliations

  • 1Department of Environmental Engineering, K.I.T.s College of Engineering (Autonomous), Kolhapur, India
  • 2Department of Environmental Engineering, K.I.T.s College of Engineering (Autonomous), Kolhapur, India

Int. Res. J. Environment Sci., Volume 10, Issue (1), Pages 23-27, January,22 (2021)


Dairy industries are among the most polluting food industries as it requires large amount of fresh water and generate large amount of wastewater that may contrary affect the environment, if it is discharged untreated. The current paper assesses the performance of Moving Bed Biofilm Reactor (MBBR) process for primary treated dairy wastewater. MBBR is an attached growth biological treatment process technique, where suspended plastic media is used as biofilm carriers. The experimental investigation includes the characterization of dairy wastewater for parameters pH, COD, BOD, TDS and TSS. It also includes an optimization of percentage fill of biofilm carrier media from 60% to 30% in MBBR process for dairy wastewater treatment to achieve the disposal standards. It was investigated that the reduction in percentage fill of carrier media resulted out in decrease in microbial content of reactor thereby decreasing the removal efficiencies with decreased percentage fill of carrier media. 50% fill of biofilm carrier media was observed to be optimum percentage fill for achieving disposal standards. The average removal efficiencies observed at HRT of 44 hours for 50% carrier fill for the parameters COD, BOD, TDS and TSS are 92.64%, 98.69%, 17.18% and 85.77% respectively.


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