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1996 Fiscal Year Final Research Report Summary

Measurement and evaluation of pollutants in landfill leachate.

Research Project

Project/Area Number 06453207
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

MATSUO Tomonori  Univ. of Tokyo, Graduate school of Engineering, Professor, 大学院・工学系研究科, 教授 (80010784)

Co-Investigator(Kenkyū-buntansha) URASE Taro  Univ. of Tokyo, Graduate school of Engineering, Research Assoc., 大学院・工学系研究科, 助手 (60272366)
SUZUKI Noriyuki  Kanazawa Instutite of Technol., Dept. of Civil environment eng., Lecturer, 環境,土木,建築系, 講師 (40196853)
MINO Takashi  Univ. of Tokyo, Graduate school of Engineering, Asoc. Professor, 大学院・工学系研究科, 助教授 (60166098)
Project Period (FY) 1994 – 1996
KeywordsSOLID WASTE / LEACHATE / COAGULATION / HEAVY METALS / MICROPOLLUTANTS / PLASTIC ADDITIVES
Research Abstract

We investigated the leachates from three solid waste disposal sites for several times. Various heavy metals in the landfill leachates were measured up to very low concentration level of microgram per liter. Though no violation to Japanese effluent standard was found in respect of individual metal, leachate or treated leachate still contains higher concentration of total heavy metals than surrounding water enviromment. The effluent concentration after treatment was of the same order of raw leachate. Maximum metal solubilities in leachate were calculated taking the presence of inorganic metal complexes into account. Solubilities of metals were enough high and they were not the limiting factor determining concentrations after coagulation. The coagulation with higher pH was not successful in reducing concentration of leachate-origin-metals contrary to the case of pure chemical metals. The heavy metals especially nickel and copper in the leachate were associated with organic matters and consequently they remained in solution unless organic matters were removed. Application of nanofiltration to leachate treatment was studied. It was possible to separate metals from less toxic salts by low retention nanofiltration membranes.
We also measured organic micropollutants by GC/MS.Plastic additives were detected at every site. Less hydrophobic compounds with low octanol-water partition coefficient were decreased in concentration with time elapsed from disposal. High level of disinfection by-products formation potential was detected in leachate. The treatment process of landfill leachate was very effective for plastic additives but not effective for disinfection by-products formation potential.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 山田 和哉,他: "廃棄物処分場浸出水中の微量有機成分の分析と評価" 土木学会年次学術講演会. 51-VII. 548-549 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Salequzzaman,et al.: "Assesment of heavy metal contamination of landfill leachates" 土木学会年次学術講演会. 51-VII. 550-551 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 浦瀬 太郎,他: "廃棄物処分場浸出水中に含まれる有害物質の調査" 廃棄物学会研究発表講演集. 7. 778-781 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鈴木 規之,他: "廃棄物処分場浸出水および環境水中有害元素の化学形態" 水環境学会年会講演集. 31. (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 浦瀬 太郎,他: "廃棄物処分場浸出水中の微量汚染物質のナノろ過プロセスでの挙動" 環境工学研究フォーラム講演集. 45-47 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Yamada, T.Urase, N.Suzuki, T.Matsuo: "Organic micropollutants in landfill leachate" Proc. of annual meeting of Japan society of civil engineers. 51-VII (in Japanese).548-549 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Salequzzaman, T.Urase, N.Suzuki, T.Matsuo: "Assessment of heavy metal contamination od landfill leachates" Proc. of annual meeting of Japan society of civil engineers. 51-VII. 550-551 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Urase, K.Yamada, Salequzzaman, K.Yamamoto, T.Matsuo: "Field survey of hazardous matters in landfill leachates" Proc. of annual conference of society of waste management experts of Japan. 7 (in Japanese).778-781 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N.Suzuki, M.Yasuda, T.Urase, T.Matsuo: "Chemical forms of heavy metals in landfill leachates" Proc. of annual conference of Japan association of water quality. 31 (in Japanese).(1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Urase, T.Egawa, K.Yamamoto: "Retention characteristics of micropollutants in landfill leachate by nanofiltration process" Environmental forum of Japan society of civil engineers. (in Japanese).45-47 (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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