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Nitrification of high ammonia concentrations in membrane bioreactors – microbiological aspect

Anna Raszka1
Joanna Surmacz-Górska2
  • 1 — Silesian University of Technology
  • 2 — Silesian University of Technology
Date submitted:
Date published:


Wastewater treatment based on activated sludge is known to be one of the most effective and popular wastewater purification methods. Activated sludge, as a mixture of microorganisms, is an excellent research material for both microbiology and technology, resulting in finding a method to effectively utilize different chemicals. This research is focused on microbial community temporal changes in membrane bioreactors’ flora treating wastes containing a high level of ammonia nitrogen. Knowledge about species composition and its variability over time according to the environmental factors is important from both microbial ecology and technology points of view. The aim of this study was to compare activated sludge community composition at two different sludge ages. The analysis was performed to estimate the abundance of the main species and the structure of the bacterial community pointed mainly at the ammonia and nitrite-oxidizing bacteria. The aim of the short report is mainly to familiarize the reader with problems of increasing load of nitrogen compounds resulting from different anthropogenic activities. It is obvious that the protection of our water resources is of major importance on the global scale. 

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