Effects of different C/N ratio on fouling and performance of a membrane bioreactor (MBR)
Paper ID : 1349-MST2015-FULL
Authors:
Arsalan Sepehri1, Mohammad Hossein Sarrafzadeh *2, Mohammad Reza Mehrnia3
1UNESCO Chair on Water Reuse, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
2UNESCO Chair on Water Reuse, School of Chemical Engineering, College of Engineering, University of Tehran, Iran
3Associate Professor, School of Chemical Engineering, University College of Engineering, University of Tehran, P. O. Box: 11155-4563, Tehran, IRAN
Abstract:
Understanding of membrane fouling mechanism is still limited and more researches need to be conducted to evaluate suitable design and operational conditions in a membrane bioreactor (MBR). The microbial populations and their metabolites have a great influence on the membrane fouling. The importance of EPS and SMP on the membrane fouling is proved. Different C/N ratios have various impacts on fouling and nitrogen and phosphorus removal and it needs to be studied more. Studies shows that when nitrogen loading change from 0.15 to 0.3 in the same organic loading, the removal of nitrogen and phosphorus will be decrease and the fouling will be increased.
Keywords:
Fouling, Extracellular polymeric substance, C/N ratio, MBR, Microbial community
Status : Paper Accepted (Poster Presentation)