Automatic control strategy for biological nitrogen removal of low C/N wastewater in a sequencing batch reactor

N. Kishida, J. H. Kim, M. Chen, Satoshi Tsuneda, Hi Sasaki, R. Sudo

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    To establish an automatic control system of external carbon addition in biological nitrogen removal, a bench-scale sequencing batch reactor with real-time control strategy was designed in this study. An oxidation-reduction potential (ORP) profile was used for automatic control of external carbon addition. The mean removal efficiency of total organic carbon was over 98%. Complete denitrification in an anoxic phase and complete denitrification and nitrification in anoxic and oxic phases were accomplished, respectively, because the oxic and anoxic periods were also appropriately controlled with ORP and pH profiles, respectively. Mean removal efficiency of total nitrogen was over 95%. When concentration of influent wastewater was changed, volume of additional carbon was automatically changed with the influent fluctuation, and flexible hydraulic retention time was achieved in this system.

    Original languageEnglish
    Pages (from-to)45-50
    Number of pages6
    JournalWater Science and Technology
    Volume50
    Issue number10
    Publication statusPublished - 2004

    Fingerprint

    Nitrogen removal
    Batch reactors
    Wastewater
    Denitrification
    wastewater
    Carbon
    denitrification
    nitrogen
    carbon
    Nitrification
    Real time control
    Organic carbon
    total organic carbon
    control system
    nitrification
    Hydraulics
    Nitrogen
    hydraulics
    Control systems
    reactor

    Keywords

    • C/N ratio
    • External carbon source
    • Oxidation-reduction potential(ORP)
    • pH
    • Real-time control

    ASJC Scopus subject areas

    • Water Science and Technology

    Cite this

    Automatic control strategy for biological nitrogen removal of low C/N wastewater in a sequencing batch reactor. / Kishida, N.; Kim, J. H.; Chen, M.; Tsuneda, Satoshi; Sasaki, Hi; Sudo, R.

    In: Water Science and Technology, Vol. 50, No. 10, 2004, p. 45-50.

    Research output: Contribution to journalArticle

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    AU - Sudo, R.

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