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1996 Fiscal Year Final Research Report Summary

Development of new water treatment of compound pollutants by photo chemical reaction

Research Project

Project/Area Number 07458136
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 環境保全
Research InstitutionUNIVERSITY OF TOKYO

Principal Investigator

OHGAKI Shinichiro  Univ.of Tokyo, Dep.of Engineering, Professor, 大学院・工学系研究科, 教授 (20005549)

Co-Investigator(Kenkyū-buntansha) M Otaki  Univ.of Tokyo, Dep.of Engineering, Res.associate, 大学院・工学系研究科, 助手 (70272367)
Project Period (FY) 1995 – 1996
KeywordsMedium pressure UV lamp / Low pressure UV lamp / Humic substances / Photocatalysis / Titanium dioxide / Residual germicidal effect / THMFP
Research Abstract

In this research, a residual germicidal effect after Ultraviolet irradiation was investigated. Medium pressure mercury lamp and low pressure mercury lamp were used as germicidal lamp. The sample solution was the river water which was used as the resource water of water purification plant. In this experiment, E.coli was used as model bacteria and coliphage Qbeta was used as model virus. Even though 10-20 times UV dose was introduced to the sample solution, the residual germicidal effect to E.coli and coliphage Qbeta wasn't observed. In case of the sample pretreated by 0.1mum filtration, the residual effect wasn't observed, either.
Decomposition of humic substances were evaluated, using trihalomethane formation potential (THMFP) as index. Decomposition effect was investigated with various catalysts, too. Used catalysts were iron ion and TiO2. As results, THMFP was increased in first stage and decreased in following stage in cases of medium pressure UV lamp irradiation and TiO2 + UV.The same phenomena was reported in Ozonation before. Therefore, it is assumed that forming the low molecular was occurred by these treatment.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 大垣眞一郎、大瀧雅寛、他: "複合成分系における光触媒反応と共存物質の影響" 第31回水環境学会講演集. (発表予定). (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大垣眞一郎、大瀧雅寛、他: "THM生成能から見た多摩川中流域河川水の特性" 第31回水環境学会講演集. (発表予定). (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大垣眞一郎、大瀧雅寛、他: "低圧水銀ランプーTiO2触媒反応系の微生物不活化能のファージQβによる評価" 第31回水環境学会講演集. (発表予定). (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大垣眞一郎、大瀧雅寛、他: "薄膜酸化チタンを用いた光触媒反応による水中フェノールの分解とファージQβの不活化" 環境工学研究論文集. 33. 133-138 (1996)

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      「研究成果報告書概要(和文)」より
  • [Publications] 大垣眞一郎 他: "二酸化チタンを担持したタイルによるフェノールの光触媒分解" 環境工学研究フォーラム講演集. 33. 120-122 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大垣眞一郎、大瀧雅寛、他: "光触媒反応による水中微生物の不活化と有機物の分解" 第47回全国水道研究発表会講演集. 47. 168-169 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Ohgaki et al.: "The effect of coexisting material and photocatalysis in mixture of various material" Proc.Conference of JSWE. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Ohgaki et al.: "The characteristics of the middle of Tama river water evaluated by THMFP" Proc.Conference of JSWE. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Ohgaki et al.: "Inactivation effect evaluated by Qbeta in case of low pressure UV lamp + TiO2" Proc.Conference of JSWE. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Ohgaki et al.: "Decomposition of phenol and inactivation of phage Qbeta in photocatalysis using TiO2" Proc.Environ.and Sanit.Eng.Res.133-138 (1996)

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      「研究成果報告書概要(欧文)」より
  • [Publications] S.Ohgaki et al.: "Photocatalytic reaction of phenol by TiO2 coated tile" Proc.Environ.and Sanit.Eng.Res.Conf.120-122 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Ohgaki et al.: "Decomposition of organic material and inactivation in photocatalysis" Proc.Conference of Water Works Assoc.168-169 (1996)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-09  

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