2023 Fiscal Year Final Research Report
Control of phosphorus release using microbial fuel cell in small-scale wastewater treatment plants for phosphorus removal
| Project/Area Number |
21K12301
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 64020:Environmental load reduction and remediation-related
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| Research Institution | Center for Environmental Science in Saitama |
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Principal Investigator |
Mishima Iori 埼玉県環境科学国際センター, 水環境担当, 主任研究員 (00411231)
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| Co-Investigator(Kenkyū-buntansha) |
渡邉 智秀 群馬大学, 大学院理工学府, 教授 (60251120)
窪田 恵一 群馬大学, 大学院理工学府, 助教 (50707510)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | 排水処理 / 浄化槽 / 栄養塩除去 / 電気化学処理 / 放射光分析 / 微生物燃料電池 |
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| Outline of Final Research Achievements |
To establish a highly efficient and stable phosphorus removal method in Johkasou system, the enhancement of phosphorus removal effects through the combination of iron electrolysis, an electrochemical technique, and microbial fuel cells (MFC) was investigated in laboratory experiments. In evaluating these experiments, the analysis of the chemical forms of iron was considered important, so the conditions for high-sensitivity analysis of iron chemical forms using X-ray absorption fine structure measurements were first identified. Next, continuous treatment experiments were conducted by applying MFC to the anaerobic tank of the iron electrolysis phosphorus removal-type Johkasou system, and the iron forms were analyzed along with their impact on treatment performance. As a result, a change in chemical forms of iron in the anaerobic tank sludge and an improvement in phosphorus removal efficiency across the reactor were observed, suggesting that the process proposed in this study is useful.
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| Free Research Field |
水環境工学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究は、電気化学的技術である鉄電解法と微生物燃料電池（MFC）の組み合わせによる浄化槽での高効率かつ安定したリン除去法の確立を目指している。鉄の化学形態の高感度解析と連続処理実験により、リン除去能力の向上が確認された。この成果は、学術的には鉄の化学形態とリン除去効率の関係を解明し、環境工学分野に新たな知見を提供する点で意義がある。また、小規模排水処理施設のリン除去の安定化に貢献し、水質改善や環境保全に寄与するため、持続可能な水処理技術の開発に重要な役割を果たすと考えられる。
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