Mathematical modelling of processes of reject water treatment in moving bed bioreactor

Viola Somogyi, Bence Fazekas, Endre Domokos, Ákos Rédey

Research output: Contribution to journalArticle


Efficient treatment of reject water originating from sludge digestion process was achieved by implementing a moving bed bioreactor. Since the ongoing processes in the reactor were unclear, model development was chosen in order to map them. To describe biofilm processes a newly presented zero-dimensional biofilm model [27] was chosen. Simulation data in the study of Plattes et al. [28] were promising for municipal wastewater but it did not meet the expectations in case of wastewater with high ammonia content. Therefore four step nitrogen removal was implemented in the 0D biofilm model. Steady-state simulation showed that processes over nitrite were of great importance in the system. The results also indicated that to a certain degree ANAMMOX (anaerobic ammonia oxidation) reaction took place as well. The special structure of the moving bed bioreactor with protected microorganism colonies was assumed to be the reason for that.

Original languageEnglish
Pages (from-to)1248-1257
Number of pages10
JournalWSEAS Transactions on Systems
Issue number11
Publication statusPublished - Dec 1 2008


  • MBBR
  • Nitrogen removal
  • Reject water
  • Steady-state simulation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications

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