Wastewater treatment with combined upflow anaerobic fixed-bed and suspended aerobic reactor equipped with a membrane unit

KOCADAĞİSTAN B., KOCADAĞİSTAN E., Topcu N., Demircioǧlu N.

Process Biochemistry, vol.40, no.1, pp.177-182, 2005 (Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 1
  • Publication Date: 2005
  • Doi Number: 10.1016/j.procbio.2003.11.055
  • Journal Name: Process Biochemistry
  • Journal Indexes: Scopus
  • Page Numbers: pp.177-182
  • Keywords: pumice, membrane, upflow anaerobic fixed-bed (UAF-B), biofilter, phosphate removal
  • Manisa Celal Bayar University Affiliated: Yes

Abstract

A combined upflow anaerobic fixed-bed (UAF-B), using pumice as a biofilter material, and a suspended aerobic activated sludge bioreactor (SAR) equipped with a microfiltration (MF) unit has been designed. This system exhibited high performance on the removal of organic matter. COD removal efficiencies were in the range of 94-98.7% with organic loading rates (OLR) of 3.67-16.56 kg COD m-3 per day. Phosphorous and nitrogenous materials were removed from the wastewater as well as COD. High PO4-P removal efficiencies (96-97%) were achieved in this study. NO2-N and NO3-N concentrations in the effluent of MF were less than 1.0 mg l-1 through most experiments. Suspended solid concentrations measured in the effluent were below the detectable levels. Biofilm development and microbial communities were investigated using scanning electron microscopy (SEM). © 2004 Elsevier Ltd. All rights reserved.