Characterization of Microbial Community in Membrane Bioreactors Treating Domestic Wastewater

• TAKADA Kazuki

  Graduate School of Engineering, Osaka University, Japan

• HASHIMOTO Kurumi

  Graduate School of Engineering, Osaka University, Japan

• SODA Satoshi

  Graduate School of Engineering, Osaka University, Japan

• IKE Michihiko

  Graduate School of Engineering, Osaka University, Japan

• YAMASHITA Kyoko

  Japan Sewage Works Agency, Japan

• HASHIMOTO Toshikazu

  Japan Sewage Works Agency, Japan

抄録

Activated sludge microbial communities of 12 membrane bioreactors (MBRs) treating domestic wastewater were characterized in terms of their bacterial phylogenic composition and organic metabolism using eubacterial 16S rRNA gene-based terminal-restriction fragment length polymorphism (T-RFLP) analysis and carbon-utilization tests (Biolog assay). The phylogenic microbial structure of MBR sludges differed considerably among samples, depending neither on influent characteristics nor on operational modes and conditions. Comparison of the microbial community structures of the 12 MBRs and 11 conventional processes characterized in a previous study indicated that MBRs and the conventional processes differ considerably in terms of phylogenic structure. Also, dominant bacteria in MBRs differed considerably from each other, although those in the conventional processes were similar. In contrast, the carbon-utilization profile of activated sludge samples of 8 among 12 MBRs and all conventional processes tested in the previous study were mutually similar, indicating that activated sludge communities possess similar biodegradation potential against organic pollutants even if the phylogenetic bacterial composition differs. Results also demonstrated that some MBR sludge samples have unique carbon-utilization profiles, suggesting that MBRs enrich bacterial populations with unique metabolic activity.

収録刊行物

• Journal of Water and Environment Technology

  Journal of Water and Environment Technology 12 (2), 99-107, 2014

  公益社団法人 日本水環境学会

キーワード

• Biolog assay
• membrane bioreactor
• T-RFLP

詳細情報

• CRID: 1390001205178288512
• NII論文ID: 130003391656
• DOI: 10.2965/jwet.2014.99
• ISSN: 13482165
• Web Site: https://www.jstage.jst.go.jp/article/jwet/12/2/12_99/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可