Hybrid biological reactor systems: An experimental study

G. M. Ayoub, M. El-Fadel, A. Acra

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    Experiments were performed on a laboratory model of a hybrid bioreactor consisting of an aeration tank to which support media were added to simulate both suspended and attached growth reactors, a secondary clarifier and a recycling system. The system was operated for a period of two months, using synthetic wastewater for the substrate medium. Support media were added to the reactor in stages of six nets each stage, so as to evaluate the impact of the addition of the support media on the efficiency of treatment. Relevant parameters were measured regularly. The study demonstrated the positive effects the system had on BOD5 removal and the settling efficiency in the secondary clarifier.

    Original languageBritish English
    Pages (from-to)411-420
    Number of pages10
    JournalInternational Journal of Environmental Studies
    Issue number4
    StatePublished - Aug 2003


    • Activated sludge
    • Attached growth
    • Biological treatment
    • Hybrid system
    • Suspended growth


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