Two-phase anaerobic digestion for biogas production from dairy effluent—CSTR and ABR in series

L. Jürgensen, E. A. Ehimen, J. Born, J. B. Holm-Nielsen

Research output: Contribution to journalArticlepeer-review

Abstract

Anaerobic digestion of low-strength dairy waste water has been used for the production of biogas. A two-phase pilot scale process had been established within 90 d using a 1 m3continuous stirred tank reactor (CSTR) and a 200 l anaerobic baffled reactor (ABR) in series. The system was fed at constant retention time of 1.6 d and with changing feed strengths resulting in various organic loading rates between 1.25-4.50 g/(l d). The average COD removal was 82% with a biogas yield of 0.26 l/gCOD. The combination of CSTR and ABR overcame the disadvantages of both reactor types. By further optimization the chosen system is able to replace conventional waste water treatment system used nowadays.

Original languageEnglish
Pages (from-to)1698-1702
Number of pages5
JournalEuropean Biomass Conference and Exhibition Proceedings
Volume2016
Issue number24thEUBCE
Publication statusPublished - 2016
Externally publishedYes

Keywords

  • Anaerobic process
  • Biogas
  • Waste water treatment

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