کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10395376 888977 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microbial behaviors involved in cake fouling in membrane bioreactors under different solids retention times
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Microbial behaviors involved in cake fouling in membrane bioreactors under different solids retention times
چکیده انگلیسی
Biomass characteristics and membrane performances in the MBRs operated at a high flux of 30 L/m2 h under different SRTs (10, 30 days, and infinity) were monitored. Results showed that more serious cake-fouling happened in the SRT-infinity MBR, which correlated with the activated sludge characteristics such as smaller floc size and greater EPS amount. DGGE analysis indicated that the microbial community shifted in different ways under various SRTs, which also influenced EPS productions in the MBRs. Different microbial communities were developed on the membrane surfaces at various operating stages and SRTs. Possibly, the activated sludge characteristics (such as MLSS concentration, EPS properties) and hydrodynamic conditions influenced by the SRTs were associated with cake layer development and membrane fouling propensity. Insight into the EPS characteristics and deposition behaviors of bacterial flocs will be crucial to explore appropriate biofouling control strategies in MBRs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 102, Issue 3, February 2011, Pages 2511-2516
نویسندگان
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