کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
679969 1459961 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Distribution and mass transfer of dissolved oxygen in a multi-habitat membrane bioreactor
ترجمه فارسی عنوان
توزیع و انتقال جرم اکسیژن محلول در بیوراکتور غشایی چند زیستگاه
کلمات کلیدی
بیوراکتور غشایی، چند زیستگاه، جابجایی عظیم، اکسیژن محلول
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


• Detailed distribution of DO in a multi-habitat membrane bioreactor was revealed.
• Growth of biomass was an important factor influencing the distribution of oxygen.
• Adjusting the viscosity was a feasible method to improve the mass transfer of DO.

This work investigated the DO distribution and the factors influencing the mass transfer of DO in a multi-habitat membrane bioreactor. Through the continuous measurements of an on-line automatic system, the timely DO values at different zones in the bioreactor were obtained, which gave a detailed description to the distribution of oxygen within the bioreactor. The results indicated that the growth of biomass had an important influence on the distribution of oxygen. As the extension of operational time, the volumetric oxygen mass transfer coefficient (kLa) was generally decreased. With the difference in DO values, a complex environment combining anoxic and oxic state was produced within a single bioreactor, which provided a fundamental guarantee for the total removal of TN. Aeration rate, the concentration and apparent viscosity of MLSS have different influences on kLa, but adjusting the viscosity is a feasible method to improve the mass transfer of oxygen in the bioreactor.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 182, April 2015, Pages 323–328
نویسندگان
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