Establishment of single-stage partial nitritation and anammox by membrane bioreactor for biological nitrogen removal

2017 Fiscal Year Final Research Report

• Project/Area Number: 26289183
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Civil and environmental engineering
• Research Institution: Kumamoto University
• Principal Investigator: Kawagoshi Yasunori 熊本大学, くまもと水循環・減災研究教育センター, 教授 (00291211)
• Co-Investigator(Kenkyū-buntansha): 森村 茂 熊本大学, 大学院先端科学研究部(工), 准教授 (20230146) ; 惣田 訓 立命館大学, 理工学部, 教授 (30322176) ; 濱 武英 熊本大学, くまもと水循環・減災研究教育センター, 准教授 (30512008)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: Anammox / 部分亜硝酸化 / MBR / 一槽型 / 窒素除去

Outline of Final Research Achievements

We succeeded in establishment of a single-stage partial nitritation and anammox process by membrane bioreactor (PNA by MBR). The strategy is that partial-nitritation (PN) process was established by inoculating ammonium-oxidizing bacteria (AOB) at first and subsequently PNA process was established by inoculating anammox bacteria. As a result, establishment of PNA by MBR was succeeded and maximum-nitrogen removal rate and maximum-nitrogen removal efficiency of 1.45 kg-N/m3/d and 89.5% were achieved. The results of bacterial community analysis indicates that genus Nitrosomonas and genus Nitrosospira species are dominant as ammonium oxidizing bacteria, and Candidatus Brocadia”species were dominant.

Free Research Field

環境工学