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Biodenitrification by Fluidized Bed Biofilm Reactor

Author Affiliations

  • 1Department of Civil Engineering, Government Polytechnic, Amravati, INDIA
  • 2Department of Civil Engineering, Prof. Ram Meghe Institute of Technology and Research, Badnera, Amravati, INDIA

Int. Res. J. Environment Sci., Volume 2, Issue (12), Pages 42-51, December,22 (2013)


Nitrate contamination of water resources has been documented worldwide. It has become one of the major environmental issues because of its implications on human and animal health. Therefore for welfare of mankind it is necessary to remove nitrate from water resources. Biological denitrification (biodenitrification) is an attractive treatment option, among the various options available for removal of nitrate. The FBBR (Fluidized Bed Biofilm Reactor) is one of the recent methods which can be used for denitrification. Considering the severity of the problem the present study was carried out with a aim to remove nitrate from synthetic wastewater using denitrification by FBBR. Fine glass granules were used as a biofilm carrier media which were prepared by grinding and sieving the wastage broken glass as a biofilm carrier media. In the study, the maximum average nitrate nitrogen removal efficiency observed was 90.90% at HRT of 30 minutes and optimum as 86.03% at HRT of 10 minutes. For nitrogen loading rates varying from 0.48 kg N m-3-1 to 28.80 kg N m-3-1, the denitrification rates observed were varying from 0.42 kg N m-3-1 to 16.91 kg N m-3-1. The optimum nitrate nitrogen loading rate and denitrification rate observed were 10.08 kg N m-3-1 and 8.67 kg N m-3-1 respectively. This indicates that the denitrification by FBBR has great potential for removal of nitrate.


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