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

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

Authors

  • Malieh Amini Department of Environmental Science, Faculty of Natural Resources, Jiroft University, Iran, Iran, Islamic Republic of
  • Habibollah Younesi Department of Environmental Science, Faculty of Natural Resources, Tarbiat Modarres University, Iran, Iran, Islamic Republic of
  • Ghasem Najafpour Department of Chemical Engineering, Engineering Faculty, University of Mazandaran, Iran, Iran, Islamic Republic of
  • Ali Akbar Zinatizadeh Lorestani Department of Applied Chemistry, Faculty of Chemistry, Razi University, Iran, Iran, Islamic Republic of

Keywords:

Nutrient removal, Wastewater, bioreactor, Granular

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 PO4 3- 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.

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Published

2013-08-11

Issue

Vol. 5 No. 3 (2013)

Section

Articles

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