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Characterization and minimization of health risks by desinfection and oxidation by-products in drinking water treatment process

Research Project

Project/Area Number 07405025
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Civil and environmental engineering
Research InstitutionNational Institute of Public Health

Principal Investigator

AIZAWA Takako (1997)  National Institute of public Health, Department of Water Supply Engineering, Chief, 水道工学部, 室長 (10192832)

真柄 泰基 (1995-1996)  国立公衆衛生院, 水道工学部, 部長 (60083739)

Co-Investigator(Kenkyū-buntansha) ASAMI Mari  National Institute of Public Health, Department of Water Supply Engineering, Res, 水道工学部, 研究員 (90260265)
MAGARA Yasumoto  Hokkaido University, Faculty of Engineering, Professor, 大学院・工学研究科, 教授 (60083739)
相澤 貴子  国立公衆衛生院, 水道工学部, 室長 (10192832)
Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1997: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1996: ¥3,000,000 (Direct Cost: ¥3,000,000)
Keywordsdrinkingwater / disinfection by-product / bromate / quantitative structure activity relationsip / toxicity estimation / health risk / 代替消毒剤 / オゾン処理 / 臭素酸イオン / 安全性評価 / 水道 / 消毒 / 副生成物 / 塩素 / オゾン / 二酸化塩素 / クロラミン
Research Abstract

Water oxidation is one of necessary unit process in drinking water treatment, especially for disinfection or pretreatment of micropollutants. Chlorination and ozonation are most popular oxidation processes in conventional and advanced treatment process. Besides chlorination yields chlorination by-products such as trihalomethane, ozonation yields bromate, bromide-containing oxidation by-product, which is a strong carcinogen.
Analytical conditions of bromate using ionchromatography along with pretreatment of silver cartridge and borate elluent was established in our study. The quantitative detection limit was 2 mug/l. Bromate was found in several drinking water treatment processes in japan.
Formation of bromate depends on bromide concentration in raw water, ozonation conditions and co-existing constituents. In laboratory-scale ozonation experiments of natural river water, bromate formation was inhibited by coexisting organic matters in original water, while total organic halides (TOX) and … More aldehydes were increased. Phosphate also worked as a scavenger to inhibit bromate formation in ozonation.
Bromate concentration in an experimental ozonation plant was observed. Bromate concentration was correlated with ozone dose and temperature. Since elimination of bromate with following GAC/BAC process was difficult, control of bromate formation in ozonation is necessary.
Health risk of bromate was estimated relatively high compared to other organic by-products formed in oxidation. In some cases, life time cancer risk of bromate elevated to 10^<-4> level. Toxicity of other organic oxidation by-products were estimated using QSAR,quantitative structure activity relationship. Bromide substituents with chlorination by-products showed stronger potential of toxicity. Out of 29 mouse and rat carcinogenicity estimation data for halogenated organic substances, 86% (25 cases) were matched with experimental results. Risk estimation and minimization can be applied for selecting alternative disinfectants. Less

Report

(4 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 浅見 真理、相沢 貴子、眞柄 泰基: "オゾン処理による臭素酸イオンの生成における共存有機物の影響" 水環境学会誌. 19・11. 930-936 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 浅見 真理、橋本 暢之、相沢 貴子、眞柄 泰基: "上水中の臭素酸イオンの分析方法に関する検討" 水道協会雑誌. 66・4. 34-42 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Asami, T.Aizawa, Y.Magara et al.: "Bromate Removal during Trausition from GAC to BAC" Submitting.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 相沢 貴子、金子 光美 編: "水質衛生学" 技報堂出版社, 579 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 眞柄 泰基 監修: "水道の水質調査法 -水源から給水栓まで-" 技報堂出版社, 351 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Mari Asami, Takako Aizawa, Yasumoto Magara: "Bromate Ion Formation Inhibition by Coexisting Organic Matters in Ozonation Process" Journal of Japan Sociaty for Water Environmet. Vol.19, No.11. 930-936 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Mari Asami, Nobuyuki Hashimoto, Takako Aizawa, Yasumoto Magara: "Detection of Bromate Ions Ozonated Water by Ion Chromatography-Analytical Condition and its Application-" Journal of Japan Water Works Association. Vol.66, No.4. 34-42 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Mari Asami, Takako Aizawa, Takayuki Morioka, Wataru Nishijima, Akihisa Tabata, Yasumoto Magara: "Bromate Removal during Transition from Granular Activated Carbon (GAC) to Biological Activated Carbon (BAC)" (submitted in 1988.3).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Yasumoto Magara, Takashi Sasaki, Tai Kozawa, Mari Asami, Takako Aizawa: "Comparative Study of Disinfectants for Water Supply" 20th International Water Supply Assossiation. SS5-11-16. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Takako Aizawa, Yasumoto Magara, Takashi Sasaki, Tai Kozasa, Mari Asami: "The performance of Disinfection and By-products of Selected Disinfectants, Disinfection By-producrs in Drinking Water" Critical Issues in Health Effects Research. 50-52 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Takako Aizawa, Yasumoto Magara, Mari Asami: "Comparative Study of Disinfection and by-products for salected disinfectants" 5th Japan Korea Symposium on Water Emvironmental Engineering. 15-21 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Mari Asami, Takako Aizawa, Takayuki Morioka, Mobuyuki Hashimoto, Wataru Nishijima, Akihisa Tabata, Yasumoto Magara: "Bromate formation and BAC removal in drinking water treatment process" 6th Korea-Japan Symposium on Water Environment, Pusan, Korea, 1997.10.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Mari Asami, Takako Aizawa, Takayuki Morioka, Nobuyuki Hashimoto, wataru Nishijima, Akihisa Tabata, Yasumoto Magara: "Occurrence and BAC removal of bromate ions in drinking water treatment process" 13th Ozone World Congress, Kyoto, Japan, 1997.10.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Takako Aizawa: Hygienic Water Quality (in Japane), Mitsumi Kaneko ed.Gihodo, Tokyo, (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Yasumoto Magara, supervised, Research Group on Drinkingwater Quality ed.: Methods for Water Quality Survey-From Source Water to Tap Water- (in Japanese). Gihodo, Tokyo, (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 浅見 真理,橋本 暢之, 相沢 貴子, 眞柄 泰基: "イオンクロマトグラフィーを用いたオゾン処理水中の臭素酸イオンの測定方法と適用" 水道協会雑誌. 751. 34-42 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 眞柄 泰基(監修)水道水質問題研究会(編著): "水道の水質調査法[水源から給水栓まで]" 技報堂出版, 351 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 浅見真理、相沢貴子、眞柄泰基: "オゾン処理による臭素酸イオンの生成における共存有機物の影響" 水環境学会誌. 19(11). 930-936 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 浅見真理、橋本暢之 相沢貴子 眞柄泰基: "イオンクロマトグラフィーを用いたオゾン処理水中の臭素酸イオンの測定方法と適用" 水道協会雑誌. 66(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 相沢貴子(金子光美編): "水質衛生学" 技報堂, 579 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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