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Japan-U.S. joint development of online water quality management method to realize highly reliable potable water reuse

Research Project

Project/Area Number 22KK0061
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 22:Civil engineering and related fields
Research InstitutionNagasaki University

Principal Investigator

FUJIOKA TAKAHIRO  長崎大学, 総合生産科学研究科(工学系), 教授 (20759691)

Co-Investigator(Kenkyū-buntansha) 児玉谷 仁  鹿児島大学, 理工学域理学系, 准教授 (30434468)
竹内 悠  京都大学, 工学研究科, 助教 (70835272)
Project Period (FY) 2022-10-07 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥20,150,000 (Direct Cost: ¥15,500,000、Indirect Cost: ¥4,650,000)
Fiscal Year 2024: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2023: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2022: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywordsオンライン計測 / 再生水 / 飲用再利用 / 膜分離 / 消毒副生成物
Outline of Research at the Start

本研究では、下水処理水を水道用水に再利用する飲用再利用の安全性を現状よりも大幅に高めるため、下水処理中の発がん性を有する消毒副生成物(ニトロソジメチルアミン、臭素酸)を常時モニタリングし、検出濃度に応じて水再生システムを制御する次世代型の水質管理手法を構築する。本国際研究成果を通して、国内外の水道における水質管理のパラダイムシフト(手分析検査⇒オンライン監視)への寄与が期待される。

Outline of Final Research Achievements

In this study, we developed a technology to continuously analyze the concentrations of carcinogenic disinfection by-products (N-nitrosodimethylamine and bromate) in recycled water for drinking water supply. Specifically, we established a pretreatment technology to stably remove analytical interference from reclaimed water. By clarifying the effect of water treatment conditions on the concentration fluctuations of disinfection by-products in reclaimed water through development in Texas, USA, we established a water quality management method to prevent water quality accidents.

Academic Significance and Societal Importance of the Research Achievements

短期・長期曝露により健康被害が予見される有害物の除去を担保することは、飲用再利用のみならず上水道においても重要な管理指標である。消毒副生成物であるNDMAや臭素酸は、日本でも採用している高度浄水処理(オゾン処理)にて多量に生成するため、本研究で開発したオンライン水質計測技術を水道の原水や水道水の監視に適用することで、より安心・安全な水道水が地域住民に提供されると期待される。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (5 results)

All 2024 Other

All Int'l Joint Research (3 results) Presentation (2 results)

  • [Int'l Joint Research] テキサス州立大学(米国)

    • Related Report
      2024 Annual Research Report
  • [Int'l Joint Research] テキサス州立大学(米国)

    • Related Report
      2023 Research-status Report
  • [Int'l Joint Research] テキサス州立大学(米国)

    • Related Report
      2022 Research-status Report
  • [Presentation] Bacteria and Bromate Online Monitoring in a Pilot DPR System2024

    • Author(s)
      Leontieff, D.A., Rasha, K.M.R., Ikehata, K., Takeuchi, H., Kodamatani, H., and Fujioka, T.
    • Organizer
      WateReuse Texas Conference
    • Related Report
      2024 Annual Research Report
  • [Presentation] Online Analysis of N-Nitrosodimethylamine in Purified Reclaimed Water for Direct Potable Reuse2024

    • Author(s)
      Rasha, K.M.R., Torkelson, P.H., Ikehata, K., Fujioka, T., Kodamatani, H.
    • Organizer
      WateReuse Texas Conference
    • Related Report
      2024 Annual Research Report

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Published: 2022-10-11   Modified: 2026-01-16  

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