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DEVELOPMENT OF NEW ROTATING BIOLOGICAL CONTACTOR WITH SURFACE PROTRUSIONS AND SOLID-LIQUID SEPARATION

Research Project

Project/Area Number 62550401
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 都市工学・衛生工学
Research InstitutionMIYAZAKI UNIVERSITY

Principal Investigator

WATANABE Yoshimasa  PROFESSOR,DEPARTMENT OF CIVIL ENG.,MIYAZAKI UNIVERSITY, 工学部, 教授 (00040999)

Co-Investigator(Kenkyū-buntansha) MASUDA Sumio  RESEARCH ASSOCIATE, DEPARTMENT OF CIVIL ENG.,MIYAZAKI UNIVERSITY, 工学部, 助手 (70117422)
Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1988: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1987: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsROTATING BIOLOGICAL CONTACTOR / BIOFILM / EXTERNAL DIFFUSION / EDDIES / 回転円板法 / 生物膜 / 固液分離 / 物質移動 / 微細突起 / 表面渦 / 網状メディア / はく離
Research Abstract

A new disk media,i.e.,reticulated media with the surface protrusions,has been proposed to promote the external diffusion of soluble substrates to the biofilm attached to the Rotating Biological contactor(RBC).The height of protrusions was 5 mm. The diffusion layer thickness with 8 protrusions at 2 rpm was about 100 m,while it was about 200 m without protrusion. In order to reduce the disk weight,a reticulated media was used and it was found that the biofilm was well developed on this type of media, and ammonia fluxes were the almost the same in the solid and reticulated media.
In a conventional RBC system,the final clarifier has been used to separate the treated waste-water and detached biomass. The detached biomass is exposed to the turbulent shear in the trough during the transport process to the final clarifier. Such an exposure breaks down the detached biomass into smaller particles which can not settle in the clarifier. As a result,it has been reported that the effluent from the RBC system containes a lot of small organic particles which offer the additional BOD. in this research,a two-story RBC was constructed to achieve the simul-taneous removal of the detached biomass in the trough. Its upper part and lower part function as the RBC and storage space of the settled biomass,respectively. The two-story RBC was operated in a four-staged unit. Experimental investigation showed that the removal efficiency of detavhed biomass in the two-story RBC was very hig to result in the effluent suspended solid concentra-tion of about 10 ppm. It means that the final clarifier may not be necessary in the two-story RBC

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 渡辺義公 他: 環境技術. 17. 91-94 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 渡辺義公 他: 昭和62年度 土木学会西部支部研究発表会講演概要集. 286-287 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.WATANABE: Proceedings of International Conference on Modelling and Computer Application in Env.Eng.10-16 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 渡辺義公 他: 昭昭63年度 土木学会西部支部研究発表会講演概要集. 300-301 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 渡辺義公 他: 下水道協会誌. 26ー301. (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.Watanabe;et al.: Water Science and Technology. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.WATANABE; K.NISHIDOME: "DESIGN PROCEDURE OF ROTATING BIOLOGICAL CONTACTORS BASED ON MASS TRANSFER MODEL" JOURNAL OF JAPAN SEWAGE WORKS ASSOCIATION. 26. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.WATANABE; C.LEE; M.KOIKE: "NITRIFICATION KINETICS,AND SIMULTANEOUS REMOVAL OF BIOMASS AND PHOSPHOROUS IN ROTATING BIOLOGICAL CONTACTORS" WATER SCIENCE AND TECHNOLOGY. (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.WATANABE: "MODELLING AND RATIONAL DESIGN OF ROTATING BIOLOGICAL CONTACTOR" PROC. OF INTERNATIONAL CONFERENCE ON MODELLING AND COMPUTER APPLICATION IN ENVIRONMENTAL ENGINEERING. 10-16 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] C.LEE;Y.WATANABE;M.ISHIGURO: "MATHEMATICAL MODEL OF ROTATING BIOLOGICAL CONTACTOR AND ITS APPLICATION TO SCALE UP DESIGN" ENVIRONMENTAL CONSERVATION. 17. 91-94 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] S.MASUDA;Y.WATANABE;Y.WATANABE;M.ISHIGURO: "SIMULTANEOUS NITRIFICATION AND DENITRIFICATION IN ROTATING BIOLOGICAL CONTACTORS" ENVIRONMENTAL CONSERVATION ENGINEERING. 18. 105-109 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 渡辺義公 他: 昭和63年度土木学会西部支部研究発表会講演概要集. 300-301 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 渡辺義公 他: 下水道協会誌. 26-301. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] Y.Watanabe,et.al: Water Science and Technology. (1990)

    • Related Report
      1988 Annual Research Report
  • [Publications] 渡辺義公 他: 平成元年度土木学会年次学術講演会概要集. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 渡辺義公 他: 環境技術. 17. 91-94 (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] 渡辺義公 他: 昭和62年度土木学会西部支部研究発表会講演概要集. 286-287 (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] Y. WATANABE: Proceedings of International Corference on Hodelling and Computer Applicetion in Environmertal Engineering. 1. 10-16 (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] Y. WATANABE: Water Sci and Tech. 20. (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] 渡辺義公: 下水道協会誌.

    • Related Report
      1987 Annual Research Report
  • [Publications] 渡辺義廣: 昭和63年度土木学会年次学術講演会概要集.

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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