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Evaluation of factors influencing soluble microbial product in submerged MBR through hybrid ASM model

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Abstract

In this study, a mathematical model was established to predict the formation of the soluble microbial product (SMP) in a submerged membrane bioreactor. The developed model was calibrated under the reference condition. Simulation results were in good agreement with the measured results under the reference condition. The calibrated model was then used in the scenario studies to evaluate the effect of three chosen operating parameters: hydraulic retention time (HRT), dissolved oxygen concentration, and sludge retention time (SRT). Simulation results revealed that the SMP dominated the soluble organic substances in the supernatant. The scenario studies also revealed that the HRT can be decreased to 1 h without deteriorating the effluent quality; dissolved oxygen concentration in the reactor can be kept at 2–3 mg/L to maintain the effluent quality, reduce the content of SMP, and minimize operating costs; the optimal SRT can be controlled to 10–15 d to achieve complete nitrification process, less membrane fouling potential, and acceptable organic removal efficiency.

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Authors and Affiliations

  1. Institute of Water Resources and Water Supply, Hamburg University of Technology, Schwarzenbergstr. 95 E, D-21073, Hamburg, Germany

    Fangyue Li & Knut Wichmann

  2. Department of Wastewater Management, Hamburg University of Technology, Eissendorfer Strasse 42, D-21073, Hamburg, Germany

    Joachim Behrendt & Ralf Otterpohl

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  1. Fangyue Li
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  2. Joachim Behrendt
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  3. Knut Wichmann
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  4. Ralf Otterpohl
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Correspondence to Fangyue Li.

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Li, F., Behrendt, J., Wichmann, K. et al. Evaluation of factors influencing soluble microbial product in submerged MBR through hybrid ASM model. Front. Environ. Sci. Eng. China 3, 226–235 (2009). https://doi.org/10.1007/s11783-009-0008-5

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  • DOI: https://doi.org/10.1007/s11783-009-0008-5

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