Process stability and comparative rDNA/rRNA community analyses in an anaerobic membrane bioreactor with silicon carbide ceramic membrane applications

Kyungjin Cho, Kyu Won Seo, Seung Gu Shin, Seockheon Lee, Chanhyuk Park

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

This study evaluated the feasibility of using a silicon carbide (SiC) anaerobic ceramic membrane bioreactor (AnCMBR) to co-manage domestic wastewater (DWW) and food waste recycling wastewater (FRW). A pilot-scale SiC-AnCMBR was put into operation for 140 days under two different organic loading rates (OLRs): 5 kg COD m −3 d −1 (OLR 5) and 3 kg COD m −3 d −1 (OLR 3). The organic removal efficiency was 93.5 ± 3.7% over the operational period. Methane production increased significantly after sludge re-seeding at OLR 3. rDNA and rRNA microbial results showed that the active archaeal community was affected by sludge re-seeding, whereas the active bacterial community was not, indicating that a shift in the active archaeal community was responsible for the increased methane production. Our results thus suggest that SiC-AnCMBRs are a promising option for co-managing DWW and FRW.

Original languageEnglish
Pages (from-to)155-164
Number of pages10
JournalScience of the Total Environment
Volume666
DOIs
StatePublished - 20 May 2019

Keywords

  • Anaerobic ceramic membrane bioreactor
  • Domestic wastewater
  • Food waste recycling wastewater
  • rDNA sequencing
  • rRNA sequencing
  • Silicon carbide membrane

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