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Clarification of Effects of Parameters on the Water Purification Using Micro bubbles

Research Project

Project/Area Number 21560184
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Fluid engineering
Research InstitutionThe University of Shiga Prefecture

Principal Investigator

MINAGAWA Hisato  滋賀県立大学, 工学部, 教授 (60190691)

Co-Investigator(Kenkyū-buntansha) YASUDA Takahiro  滋賀県立大学, 工学部, 助教 (60347432)
Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsマイクロバブル / 水質浄化 / ゼータ電位 / COD / COD値
Research Abstract

In order to make clear the effect of micro bubbles on the water purification or the water itself, we made experiments on what effect appears when adding micro bubbles on water with changing the parameters relating to the producing processes of micro bubbles. Measurements were performed in the laboratory consistently controlled lest the disturbances should affect the results. The effects of parameters were investigated under changing the producing method of micro bubbles, gas species, bubble diameter and its distribution, void fraction and temperature. The measured values in the experiments were the zeta potential, the DO, the COD and the ph values of liquid phase, the drag reduction of pipe flow caused by micro bubbles, and the washing capability.
As a result, the DO value kept a saturation value when micro bubbles were supplied, the COD value also increased. On the washing ability of micro bubbles, it was found that the bubbles produced by the sharing method have some ability in washing. On the other hand, the bubbles produced by the sharing method were also effective on the drag reduction of pipe flow. The zeta potential was also affected by the producing method of micro bubbles, and the gas species in some degree.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (11 results)

All 2012 2011 2010

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (9 results)

  • [Journal Article] Enhancement of Microbubble Generation in a Dissolution Process by Packing the Nozzle with Porous Ceramics2012

    • Author(s)
      Hiroshi YAMASHITA, Hideki AOYAGI and Hisato MINAGAWA
    • Journal Title

      Water Science and Technology

      Volume: Vol.65, No.1 Pages: 69-75

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Enhancement of Microbubble Generation in a Dissolution Process by Packing the Nozzle with Porous Ceramics2012

    • Author(s)
      Hiroshi YAMASHITA, Hideki AOYAGI, Hisato MINAGAWA
    • Journal Title

      Water Science and Technology

      Volume: 65-1 Issue: 7 Pages: 69-75

    • DOI

      10.2166/wst.2011.132

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] マイクロバブルのゼータ電位に及ぼす発生方式及び気体種の影響2012

    • Author(s)
      渡部晃也, 南川久人, 安田孝宏
    • Organizer
      日本機械学会関西支部第87期定時総会講演会(2012)
    • Place of Presentation
      関西大学
    • Year and Date
      2012-03-16
    • Related Report
      2011 Annual Research Report
  • [Presentation] マイクロバブルのゼータ電位に及ぼす発生方式及び気体種の影響2012

    • Author(s)
      渡部晃也, 南川久人, 安田孝宏
    • Organizer
      日本機械学会関西支部第87期定時総会講演会
    • Related Report
      2011 Final Research Report
  • [Presentation] 多孔質セラミックを用いたマイクロバブル生成効率の向上2011

    • Author(s)
      山下宏, 青柳秀紀, 南川久人
    • Organizer
      化学工学会第43回秋季大会(2011)
    • Place of Presentation
      名古屋工業大学
    • Year and Date
      2011-09-14
    • Related Report
      2011 Annual Research Report
  • [Presentation] 鉛直管内でのマイクロバブルを含むミルキーバブル流による摩擦抵抗低減効果2011

    • Author(s)
      曽我部統一朗, 南川久人, 安田孝宏
    • Organizer
      日本機械学会関西支部第86期定時総会講演会
    • Related Report
      2011 Final Research Report 2010 Annual Research Report
  • [Presentation] 多孔質セラミックを用いたマイクロバブル生成効率の向上2011

    • Author(s)
      山下宏, 青柳秀紀, 南川久人
    • Organizer
      化学工学会第43回秋季大会
    • Related Report
      2011 Final Research Report
  • [Presentation] マイクロバブルを含むミルキーバブルの鉛直管内流による摩擦抵抗低減効果2011

    • Author(s)
      曽我部統一朗, 南川久人, 安田孝宏
    • Organizer
      日本機械学会2011年度年次大会
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] 湖水に対するマイクロバブルの供給-CODへの影響の検討-2010

    • Author(s)
      永松幹浩, 南川久人, 安田孝宏, 山田哲史
    • Organizer
      日本機械学会関西支部第85期定時総会講演会
    • Related Report
      2011 Final Research Report 2009 Annual Research Report
  • [Presentation] マイクロバブルによる洗浄効果2010

    • Author(s)
      東郷裕也, 南川久人, 安田孝宏, 山田哲史
    • Organizer
      日本機械学会関西支部第85期定時総会講演会
    • Related Report
      2011 Final Research Report 2009 Annual Research Report
  • [Presentation] マイクロバブルによる洗浄効果2010

    • Author(s)
      東郷裕也, 南川久人, 安田孝宏, 山田哲史
    • Organizer
      日本混相流学会年会講演会2010
    • Related Report
      2011 Final Research Report 2010 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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