Development of an advanced wastewater treatment system by bioaugmentation to membrane bioreactors

2015 Fiscal Year Final Research Report

• Project/Area Number: 25281039
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Environmental engineering and reduction of environmental burden
• Research Institution: Osaka University
• Principal Investigator: Soda Satoshi 大阪大学, 工学(系)研究科(研究院), 准教授 (30322176)
• Co-Investigator(Kenkyū-buntansha): IKE Michihiko 大阪大学, 大学院工学研究科, 教授 (40222856) ; KURODA Masashi 大阪大学, 大学院工学研究科, 助教 (20511786)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 膜分離活性汚泥法 / 微生物解析 / バイオオーグメンテーション

Outline of Final Research Achievements

This study proposed the design of the bacterial community in activated sludge for advanced wastewater treatment by bioaugmentation to membrane bioreactors (MBRs). For demonstrating this proposal, 4-tert-butylphenol (4-t-BP) was selected as a recalcitrant chemical. Sphingobium fuliginis OMI as a 4-t-BP-degrading bacterium was augmented to a lab-scale MBR. Against the influent concentration at 20 mg/L, the effluent 4-t-BP concentration in the control MBR was 8-14mg/L, indicating insufficient treatment. On the other hand, 4-t-BP was not detected from effluent (<0.1 mg/L) in the bioaugmentated MBR after 7-21 days of inoculation of the bacterium, indicating successful advanced treatment.

Free Research Field

環境工学