Establish a novel reactor combining anammox with the Fenton-like reaction for simultaneous removal of nitrogen and carbon at high carbon-nitrogen ratio

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K15125
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 22060:Environmental systems for civil engineering-related
• Research Institution: Kumamoto University
• Principal Investigator: Luong Duc 熊本大学, くまもと水循環・減災研究教育センター, 特別研究員 (60815174)
• Project Period (FY): 2019-04-01 – 2021-03-31
• Keywords: アナモックス / 高C/N比 / 窒素 / 有機物 / フェントン反応

Outline of Final Research Achievements

A Fenton-like reaction and anaerobic ammonium oxidation (anammox) were combined to construct a novel process named FenTaMox for removing nitrogen (N) and organic carbon (measured as chemical oxidation demand (COD)). Two columns were packed with iron-manganese-sepiolite, a catalyst that uses hydrogen peroxide (H2O2) to catalyze Fenton-like reactions, and inoculated with marine anammox bacteria. During the start-up, marine anammox medium was fed into both columns to acclimate the anammox bacteria to iron-manganese-sepiolite. Batch experiments revealed that the anammox bacteria were not affected by 60 mgL－1 of H2O2. Next, medium containing glucose and H2O2 was fed into one column as the FenTaMox treatment, while medium containing glucose but no H2O2 was fed into the other column as the control. At a COD/N of 4, FenTaMox exhibited higher removal efficiencies of N and COD compared with that of the control, suggesting the application of FenTaMox for organic carbon- and N- removal.

Free Research Field

水処理

Academic Significance and Societal Importance of the Research Achievements

構築されたシステム下で排水中の高C/N比を４にあったてもアンモニアと有機物の同時除去を確認されました。このシステムを用いて抜本的な富栄養問題を解決できます。それから環境安全の目的を達成することを期待されます。