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Scale‐Up Considerations for a Hollow‐Fiber‐Membrane Bioreactor Treating Trichloroethylene‐Contaminated Water
Scale‐up of a hollow‐fiber‐membrane (HFM) bioreactor treating trichloroethylene‐ (TCE‐) contaminated water via co‐metabolism with the methanotroph Methylosinus trichosporium OB3b PP358 was investigated through cost comparisons, bioreactor experiments, and mathematical modeling. Cost comparisons, based on a hypothetical treatment scenario of 568‐L/min (150‐gpm) flowrate with an influent TCE concentration of 100 μg/L, resulted in a configuration of treatment trains with two HFM modules in series and an overall annual cost of $0.36/m3 treated. Biological experiments were conducted with short lumen and shell residence times, 0.16 and 0.40 min, respectively, as a result of the cost comparisons. A new variable, specific transformation, was defined for characterizing the co‐metabolic transformation in continuous‐flow systems, and values as large as 38.5 μg TCE/mg total suspended solids were sustainable for TCE treatment. Using mathematical modeling, HFM bioreactor system design was investigated, resulting in a five‐step system design strategy to facilitate sizing of the unit processes.
Scale‐Up Considerations for a Hollow‐Fiber‐Membrane Bioreactor Treating Trichloroethylene‐Contaminated Water
Scale‐up of a hollow‐fiber‐membrane (HFM) bioreactor treating trichloroethylene‐ (TCE‐) contaminated water via co‐metabolism with the methanotroph Methylosinus trichosporium OB3b PP358 was investigated through cost comparisons, bioreactor experiments, and mathematical modeling. Cost comparisons, based on a hypothetical treatment scenario of 568‐L/min (150‐gpm) flowrate with an influent TCE concentration of 100 μg/L, resulted in a configuration of treatment trains with two HFM modules in series and an overall annual cost of $0.36/m3 treated. Biological experiments were conducted with short lumen and shell residence times, 0.16 and 0.40 min, respectively, as a result of the cost comparisons. A new variable, specific transformation, was defined for characterizing the co‐metabolic transformation in continuous‐flow systems, and values as large as 38.5 μg TCE/mg total suspended solids were sustainable for TCE treatment. Using mathematical modeling, HFM bioreactor system design was investigated, resulting in a five‐step system design strategy to facilitate sizing of the unit processes.
Scale‐Up Considerations for a Hollow‐Fiber‐Membrane Bioreactor Treating Trichloroethylene‐Contaminated Water
Pressman, Jonathan G. (author) / Georgiou, George (author) / Speitel, Gerald E. Jr (author)
Water Environment Research ; 77 ; 533-542
2005-09-01
10 pages
Article (Journal)
Electronic Resource
English
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