Powdered activated carbon added biological treatment of pre-treated landfill leachate in a fed-batch reactor


KARGI F., Pamukoglu M. Y.

BIOTECHNOLOGY LETTERS, vol.25, no.9, pp.695-699, 2003 (Peer-Reviewed Journal) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 9
  • Publication Date: 2003
  • Doi Number: 10.1023/a:1023456116291
  • Journal Name: BIOTECHNOLOGY LETTERS
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.695-699
  • Keywords: fed-batch biological treatment, landfill leachate, powdered activated carbon, DOMESTIC WASTE-WATER, SEQUENCING BATCH, NITROGEN, PRETREATMENT, EFFICIENCY, OXIDATION, STRENGTH, REMOVAL

Abstract

Biological treatment of landfill leachate usually results in low treatment efficiencies because of high chemical oxygen demand (COD), high ammonium-N content and also presence of toxic compounds such as heavy metals. A landfill leachate with high COD content was pre-treated by coagulation-flocculation followed by air stripping of ammonia at pH = 12. Pre-treated leachate was biologically treated in an aeration tank operated in fed-batch mode with and without addition of powdered activated carbon (PAC). PAC at 2 g l(-1) improved COD and ammonium-N removals resulting in nearly 86% COD and 26% NH4-N removal.