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Factors influencing on permeate flux in membrane-separation activated sludge process

Research Project

Project/Area Number 10680536
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 環境保全
Research InstitutionNagaoka University of Technology

Principal Investigator

MOMONOI Kiyoshi  Nagaoka University of Technology, Faculty of Engineering, Professor, 工学部, 教授 (60003852)

Co-Investigator(Kenkyū-buntansha) KAMEYA Takashi  Yokohama National University, Faculty of Engineering, Lecturer, 工学部, 講師 (70262467)
KOMATSU Toshiya  Nagaoka University of Technology, Faculty of Engineering, Associate Professor, 工学部, 助教授 (10234874)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1999: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1998: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywordsactivated sludge process / submerged membrane-separation / permeate flux / membrane fouling / set-up flux / air bubbling strength / 汚泥負荷 / 膜分離活性汚泥法 / 膜透過流束 / 生物処理 / 膜面付着物 / 生物代謝産物
Research Abstract

In activated sludge process with membrane filtration, complete solid-liquid separation is achieved and operation with high organic load can be applied. Especially, system with submerged membrane separation is expected as an excellent membrane-separation system because of its energy-saving and cost-effective performance. However, factors influencing on the permeate flux in this system have not been clarified yet. This study was conducted to investigate the influence of initial operating permeate flux and air bubbling volume on permeate flux in the system. The strength of air bubbling was expressed as "superficial velocity", defined as an air volume divided by a cross section of bubbling area. In addition, batch filtration tests were conducted to investigate the mechanism of membrane fouling.
Permeate flux was set up at 0.18, 0.36 or 0.72 (m/day) in the beginning of operation with a constant superficial velocity of 0.88 (m/min). As the initial flux was higher, the rate of flux drop was higher. This was caused by increment of resistance of cake and gel layer (Rcg) onto the membrane surface. It was shown that surplus superficial velocity of 1.76 (m/min) had an adverse effect on permeate flux when the initial flux was 0.72 (m/day), by forming a firm fouling layer onto the membrane surface.
Currently, the effect of sludge load in operation on permeate flux is been investigated.

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 桃井 清至: "限界ろ過膜の膜透過流束に及ぼす生物代謝産物の影響"用水と廃水. 41・4. 292-298 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 岩城 洋武: "浸漬型膜分離活性汚泥法における膜透過性能に及ぼす設定フラックスと曝気線速度の影響"土木学会第54回年次学術講演会講演概要集 第7部. 54. 372-373 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 大川 諭: "浸漬型膜分離活性汚泥法における膜透過性能への曝気強度と汚泥負荷の影響"第17回土木学会関東支部新潟会研究調査発表会論文集. 17. 271-272 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 小松 俊哉: "浸漬型膜分離活性汚泥法における膜透過性能に及ぼす設定フラックスと曝気強度の影響"浄化槽研究. 11・2. 37-46 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 大川 諭: "浸漬型膜分離活性汚泥法の処理特性の及ぼす諸因子の影響"第34回日本水環境学会年回講演集. 34. 152 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kiyoshi Mononoi, Toshiya Komatsu and Gen Yong LIU: "Effect of soluble microbial products on permeation flux in ultra filtration"Journal of water and Waste. 41 (in Japanese). 292-298 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Toshiya Komatsu, Kiyoshi Mononoi and Hiromu Iwagi: "Influence of initial operating permeate flux and air bubbling volume on permeate flux in activated sludge process with submerged membrane separation"Journal of Domestic Wastewater Treatment Research. 11(2) (in Japanese). 37-46 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 桃井 清至: "限外ろ過膜の膜透過流速に及ぼす生物代謝産物の影響"用水と廃水. 41・4. 292-298 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 岩城 洋武: "浸漬型膜分離活性汚泥法における膜透過性能に及ぼす設定フラックスと曝気線速度の影響"土木学会第54回年次学術講演会講演概要集 第7部. 54. 372-373 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 大川 諭: "浸漬型膜分離活性汚泥法における膜透過性能への曝気強度と汚泥負荷の影響"第17回 土木学会関東支部新潟会研究調査発表会論文集. 17. 271-272 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 小松 俊哉: "浸漬型膜分離活性汚泥法における膜透過性能に及ぼす設定フラックスと曝気強度の影響"浄化槽研究. 11・2. 37-46 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 大川 諭: "浸漬型膜分離活性汚泥法の処理特性に及ぼす諸因子の影響"第34回日本水環境学会年会講演集. 34. 152 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 岩城 洋武: "浸漬型膜分離活性汚泥法における膜透過性能及び生物処理性能の変動" 土木学会関東支部新潟会研究調査発表会 論文集. 16. 363-364 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 岩城 洋武: "浸漬型膜分離法における膜透過フラックス低下に及ぼす影響因子の検討" 日本水環境学会年会講演集. 33. 264-264 (1993)

    • Related Report
      1998 Annual Research Report
  • [Publications] 桃井 清至: "限外ろ過膜の膜透過流束に及ぼす生物代謝成分の影響" 用水と廃水. 41・4. (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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