Kinetics of biological treatment of phenolic wastewater in three-phase fluidized bed containing biofilm and suspended sludge

A. Hirata, M. Noguchi, N. Takeuchi, Satoshi Tsuneda

    Research output: Contribution to journalArticle

    24 Citations (Scopus)

    Abstract

    Phenolic wastewater was treated in complete mixing type three-phase fluidized bed which contained both biofilm and suspended sludge. By considering the contributions of biofilm and suspended sludge to biodegradation of phenol separately, phenol removal rates with biofilm and with suspended sludge were evaluated both theoretically and experimentally. As a result, biodegradation of phenolic wastewater by biofilm process could be treated as a zero-order reaction. The volumetric biological removal rates with biofilm was proportional to the specific surface area of the biofilm with biodegradation coefficients (K) of 1.25 x 10-2 kg-PhOH/m2-biofilm/d. At a lower suspended sludge concentration, bioparticle diameter and bioparticle hold-up in the three-phase fluidized bed reactor were decisive factors for the efficiency of phenol treatment, and it was also proved that almost 100% of phenol removal could be attained at a larger specific biofilm surface area per volumetric phenol loading rate than 80 m2/(kg-PhOH/d) without suspended sludge.

    Original languageEnglish
    Pages (from-to)205-212
    Number of pages8
    JournalWater Science and Technology
    Volume38
    Issue number8-9 -9 pt 7
    DOIs
    Publication statusPublished - 1998

    Fingerprint

    Biofilms
    Fluidized beds
    biofilm
    Wastewater
    sludge
    wastewater
    kinetics
    Kinetics
    Phenols
    phenol
    Biodegradation
    biodegradation
    surface area
    biological treatment
    Specific surface area
    rate
    removal

    Keywords

    • Biofilm
    • Biological wastewater treatment
    • Phenolic wastewater
    • Suspended sludge
    • Three-phase fluidized bed

    ASJC Scopus subject areas

    • Water Science and Technology

    Cite this

    Kinetics of biological treatment of phenolic wastewater in three-phase fluidized bed containing biofilm and suspended sludge. / Hirata, A.; Noguchi, M.; Takeuchi, N.; Tsuneda, Satoshi.

    In: Water Science and Technology, Vol. 38, No. 8-9 -9 pt 7, 1998, p. 205-212.

    Research output: Contribution to journalArticle

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    abstract = "Phenolic wastewater was treated in complete mixing type three-phase fluidized bed which contained both biofilm and suspended sludge. By considering the contributions of biofilm and suspended sludge to biodegradation of phenol separately, phenol removal rates with biofilm and with suspended sludge were evaluated both theoretically and experimentally. As a result, biodegradation of phenolic wastewater by biofilm process could be treated as a zero-order reaction. The volumetric biological removal rates with biofilm was proportional to the specific surface area of the biofilm with biodegradation coefficients (K) of 1.25 x 10-2 kg-PhOH/m2-biofilm/d. At a lower suspended sludge concentration, bioparticle diameter and bioparticle hold-up in the three-phase fluidized bed reactor were decisive factors for the efficiency of phenol treatment, and it was also proved that almost 100{\%} of phenol removal could be attained at a larger specific biofilm surface area per volumetric phenol loading rate than 80 m2/(kg-PhOH/d) without suspended sludge.",
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    AU - Takeuchi, N.

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    N2 - Phenolic wastewater was treated in complete mixing type three-phase fluidized bed which contained both biofilm and suspended sludge. By considering the contributions of biofilm and suspended sludge to biodegradation of phenol separately, phenol removal rates with biofilm and with suspended sludge were evaluated both theoretically and experimentally. As a result, biodegradation of phenolic wastewater by biofilm process could be treated as a zero-order reaction. The volumetric biological removal rates with biofilm was proportional to the specific surface area of the biofilm with biodegradation coefficients (K) of 1.25 x 10-2 kg-PhOH/m2-biofilm/d. At a lower suspended sludge concentration, bioparticle diameter and bioparticle hold-up in the three-phase fluidized bed reactor were decisive factors for the efficiency of phenol treatment, and it was also proved that almost 100% of phenol removal could be attained at a larger specific biofilm surface area per volumetric phenol loading rate than 80 m2/(kg-PhOH/d) without suspended sludge.

    AB - Phenolic wastewater was treated in complete mixing type three-phase fluidized bed which contained both biofilm and suspended sludge. By considering the contributions of biofilm and suspended sludge to biodegradation of phenol separately, phenol removal rates with biofilm and with suspended sludge were evaluated both theoretically and experimentally. As a result, biodegradation of phenolic wastewater by biofilm process could be treated as a zero-order reaction. The volumetric biological removal rates with biofilm was proportional to the specific surface area of the biofilm with biodegradation coefficients (K) of 1.25 x 10-2 kg-PhOH/m2-biofilm/d. At a lower suspended sludge concentration, bioparticle diameter and bioparticle hold-up in the three-phase fluidized bed reactor were decisive factors for the efficiency of phenol treatment, and it was also proved that almost 100% of phenol removal could be attained at a larger specific biofilm surface area per volumetric phenol loading rate than 80 m2/(kg-PhOH/d) without suspended sludge.

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