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2010 Fiscal Year Final Research Report

Development of the highly advanced biological wastewater treatment process with intermittent direct ozonation

Research Project

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Project/Area Number 20560505
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Civil and environmental engineering
Research InstitutionKyoto University

Principal Investigator

NISHIMURA Fumitake  Kyoto University, 工学研究科, 准教授 (60283636)

Co-Investigator(Kenkyū-buntansha) TSUNO Hiroshi  京都大学, 工学研究科, 教授 (40026315)
Co-Investigator(Renkei-kenkyūsha) HIDAKA Taira  京都大学, 工学研究科, 助教 (30346093)
Project Period (FY) 2008 – 2010
Keywordsオゾン処理 / 元素 / 汚泥減容化 / 微量汚染物質
Research Abstract

Aiming excess sludge reduction, phosphorus recovery, and trace hazardous chemicals, "the highly advanced biological wastewater treatment process with intermittent direct ozonation" was developed and it was reported that the process is practical. However, there exist micropollutants such as estrogenic compounds in sewage, and required to be removed in sewage treatment plants. In this study, some elements such as Al, Cr, Mn, Fe, Cu, and Znare removed by wasting sludge, whereas Mg, K, Ca, Ni, and Ba were not accumulated in the system. Removal characteristics of estrogenic compounds (E1, E2, E3, EE2, NP, BPA) in the process was investigated by conductiong lab-scale experiments and simulating by the steady-state model. In sludge ozonation process, estrogenic compounds were rapidly removed both in water phase and in sludge phase at less than 30mgO3/gSS and adsorption characteristics did not change during sludge ozonation. In phosphorus recovery process, it was revealed that the concentration of estrogenic compounds did not change under the condition of pH from 8 to 10 and molar ratio ranging Ca/P 2.5 to 4. It was simulated by the steady-state model that removal ratio of estrogenic compounds was improved by 1.7-3 times compared with conventional activated sludge treatment at the operational condition of solubilization ratio of 0.1 and excess sludge wasting ratio of 0.0017.

  • Research Products

    (5 results)

All 2011 2010 2009

All Journal Article (3 results) (of which Peer Reviewed: 1 results) Presentation (2 results)

  • [Journal Article] Behavior of inorganic elements during sludge ozonation and their effects on sludge solubilization2011

    • Author(s)
      Pengzhe SUI, Fumitake NISHIMURA, Hideaki NAGARE, Taira HIDAKA, Yuko NAKAGAWA, Hiroshi TSUNO
    • Journal Title

      Water Research 45(5)

      Pages: 2029-2037

    • Peer Reviewed
  • [Journal Article] Treatment Characteristics of Wastewater Containing Phenol and Reaction Mechanism by Ozone-Added Activated Sludge Process2009

    • Author(s)
      Fumitake NISHIMURA, Yukiko OKADA, Michiko MASUDA, Taku FUJIWARA, Hiroshi TSUNO
    • Journal Title

      Proc.of 19th Ozone World Congress & Exhibition CD-ROM

      Pages: 1-13

  • [Journal Article] Investigation of Operational Parameters and Treatment Characteristics of Ozone-Added Activated Sludge Process with Simple Mathematical Model2009

    • Author(s)
      Kensuke OKUDA, Fumitake NISHIMURA, Hiroshi TSUNO
    • Journal Title

      Proc.of 19th Ozone World Congress & Exhibition CD-ROM

      Pages: 1-7

  • [Presentation] オゾン添加活性汚泥法による有機物・窒素除去の数理モデル化と操作因子2010

    • Author(s)
      西村文武
    • Organizer
      第44回日本水環境学会年会
    • Place of Presentation
      福岡大学
    • Year and Date
      2010-03-15
  • [Presentation] 活性汚泥によるエストロゲン性物質の除去特性に及ぼす溶存酸素の影響2009

    • Author(s)
      西村文武
    • Organizer
      第46回下水道研究発表会
    • Place of Presentation
      東京ビッグサイト
    • Year and Date
      2009-07-29

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Published: 2012-01-26   Modified: 2016-04-21  

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