کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4997210 1459905 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Performance and microbial population dynamics during stable operation and reactivation after extended idle conditions in an aerobic granular sequencing batch reactor
ترجمه فارسی عنوان
عملکرد و دینامیک جمعیت میکروبی در طی عملیات پایدار و واکنش پس از افزایش حالت بیکاری در یک راکتور دسته ای توالی دانه ای هوازی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


- Extended idle conditions decayed the aerobic granular system.
- Granlues structure and physical properties could be fully restored.
- EPS, especially PN contributed to storage and reconstruction of aerobic granules.
- Prolonged idle conditions irreversibly shifted microbial populations.

The evolution of removal performance and bacterial population dynamics of an aerobic granular sequencing batch reactor were investigated during stable operation and reactivation after prolonged storage. The system was run for a period of 130 days including the stable condition phase, storage period and the subsequent reactivation process. Excellent removal performance was obtained during the stable operation period, which was decayed by the extended idle conditions. The removal efficiencies for both carbon and nitrogen decayed while phosphorus removal remained unaffected. Both granules structure and physical properties could be fully restored. Microbial populations shifted sharply and the storage perturbations irreversibly altered the microbial communities at different levels. Extracellular polymeric substances (especially protein) and key groups were identified as contributors for storage and re-startup of the aerobic granular system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 238, August 2017, Pages 116-121
نویسندگان
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