2023 Fiscal Year Final Research Report
Development of an electrochemical photo-Fenton-type advanced oxidation process without reactant addition
| Project/Area Number |
21K04322
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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 22060:Environmental systems for civil engineering-related
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| Research Institution | Ryukoku University |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | 促進酸化処理 / 水処理 / 物理化学処理 |
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| Outline of Final Research Achievements |
The objective of this research project was to propose and establish a new water treatment technology using electrolytic photo-Fenton type reaction as an advanced oxidation process that does not require the supply of heavy chemicals and can achieve both a high removal rate and suppression of the formation of harmful by-products. The treatment system consists of an electrolytic flow cell and a UV flow cell, and can be operated without chemical replenishment by adding chloride and ferric ions. The results of the research showed that the addition of ferric ions can improve the treatment performance when the UV irradiation intensity is excessive against the electrolytic production rate of free chlorine. In addition, seawater can be used as an inexpensive chloride ion source for this technology.
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| Free Research Field |
水質システム工学
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| Academic Significance and Societal Importance of the Research Achievements |
様々な排水に含まれる微量汚染物質対応として活性炭吸着やオゾン酸化処理等の物理化学処理が検討され，実用されている。しかし，1,4-dioxaneなどの親水性難分解性有害物質の存在が明らかとなり，既存の水処理方法では処理が困難であることが明らかになるにつれ，現状のプロセスを見直す必要が出てきている。本研究で開発した電解フォトフェントン型処理法はこれら親水性難分解性有害物質も処理可能な新しい促進酸化処理法である。危険薬剤の供給・管理を必要とせず，電力のみで運転可能という特徴を有しており，薬剤管理者や運転管理者を置くことが困難な小規模事業場排水の処理の適正化等に貢献することが期待される。
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