Establishment of experimental methods of verifying UV dose disitribution in UV flow device

• Project/Area Number: 26420529
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Civil and environmental engineering
• Research Institution: Ochanomizu University
• Principal Investigator: Otaki Masahiro お茶の水女子大学, 基幹研究院, 教授 (70272367)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 紫外線消毒 / 流通式装置 / 生物線量計 / 照射量分布の検証 / ファージの同時投入 / 通水式紫外線消毒装置 / 照射量分布 / 換算紫外線線量 / 複数生物線量計 / 照射量分布シミュレーション / 換算紫外線照射量 / ファージ測定法の迅速化 / ファージ保存法の標準化 / 複数ファージ投入 / 一斉投入と個別測定

Outline of Final Research Achievements

The coliphages whose UV inactivation rate constants were from 2 to 9 mJ/cm2 were collected and verified by the accurate UV batch test. The detection ability of several kinds of phages with several kinds of host bacteria were investigated to find the appropriate combination. As results, the mix solution of MS2, ΦX174, T4 (or T7) were possible to detect and measure the concentration separately when they were introducing together for bio-dosimetry experiment. Then the mix solution of MS2, ΦX174, T7 were introduced to the plant scale UV flow devices and it was confirmed that the inactivation ratio of introduced three phages could be measured. Consequently, the RED (Reduction Equivalent Dose) of different three phages could be measured in completely similar condition by using mix solution and these REDs could verify the simulated UV dose distribution more accurately.

Research Products

• [Journal Article] 紫外線による水処理技術の現状と課題 (2016)
  • Author(s): 大瀧雅寛
  • Journal Title: 用水と廃水 Volume: 59(4) Pages: 42-48
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 流水式紫外線照射装置の性能評価において供試微生物を用いる際の問題点とその解決策 (2016)
  • Author(s): 大瀧雅寛
  • Organizer: 第19回日本水環境学会シンポジウム
  • Place of Presentation: 秋田県立大学秋田キャンパス
  • Year and Date: 2016-09-13
• [Presentation] 通水式紫外線消毒装置の有する照射量分布の実験的検証方法 (2016)
  • Author(s): 大瀧雅寛
  • Organizer: 第50回日本水環境学会年会
  • Place of Presentation: アスティ徳島（徳島県）
  • Year and Date: 2016-03-18
• [Presentation] 紫外線の測定方法 (2015)
  • Author(s): 大瀧雅寛
  • Organizer: 第18回日本水環境学会シンポジウム
  • Place of Presentation: 信州大学（長野県）
  • Year and Date: 2015-09-15
• [Patent(Industrial Property Rights)] 紫外線照射量情報評価装置および紫外線照射量情報評価方法 (2015)
  • Inventor(s): 大瀧雅寛
  • Industrial Property Rights Holder: 大瀧雅寛
  • Industrial Property Rights Type: 特許
  • Filing Date: 2015-03-24