Effect of aeration time and flow rate on wastewater treatment in bioreactor with granular sludge

Document Type : Other

Authors

1 Department of Environment, Faculty of Natural Resources, Jiroft University, Jiroft, Iran

2 Department of Environmental Science, Faculty of Natural Resources and marine sciences, Tarbiat Modarres University, Noor, Iran

3 Department of Chemical Engineering, Engineering Faculty, University of Mazandaran, Babol, Iran

4 Department of Applied Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran

Abstract

In  this  study,  nutrients  (C  and  P)  removal  efficiency  in  a  time-based  control  UAASB reactor  has  studied.  Analyze  of  nutrients  removal  efficiency  were  investigated  from wastewater using optimization of factors and effects of variables: Aeration time and flow rate. Results of experiments showed that Aeration time 7 min in 15 min period and Q 0.0007 m3/h in  HRT  6  h,  F/M  0.054  kg  COD/kg  MLVSS.h  and  OLR  0.15  kg/m3.h  were  desirable  for removal of nutrients from wastewater in aerobic/anaerobic bioreactor. In these conditions SVI 53.12 ml/g, COD removal efficiency 86% and PO43- removal efficiency 97.5% were showed.According  all  results  of  responses  for  best  nutrient  removal,  UAASB  bioreactor  is  desirable for removal efficiency of C and P.

Keywords

Journal of Animal Environment
Volume 5, Issue 3
November 2012
Pages 83-94

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