کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7079915 | 1459995 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Inhibition of free ammonia to the granule-based enhanced biological phosphorus removal system and the recoverability
ترجمه فارسی عنوان
مهار آمونیاک آزاد به سیستم تقویت بیولوژیکی فسفر تقویت شده بر روی گرانول و قابلیت بازیافت
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کلمات کلیدی
آمونیاک رایگان سیستم حذف فسفر بیولوژیکی بر پایه قرص، فعالیت میکروبی، ساختار جامعه میکروبی، بازیابی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
The inhibition of free ammonia (FA) to the granule-based enhanced biological phosphorus removal (EBPR) system and the recoverability from macro- to micro-scale were investigated in this study. FA was found to seriously deteriorate the EBPR performance and sludge characteristic (settleability and morphology). The FA inhibitory threshold of 17.76 mg N Lâ1 was established. Acclimation phenomenon took place when poly-phosphate accumulating organisms (PAOs) were exposed for long time to constant FA concentration (8.88 mg N Lâ1). The repressed polysaccharides excretion could lead to breaking the stability and integrity of the granules. Therefore, the reduced particle size and granule disintegration were observed. The molecular analysis revealed that FA had a significant influence on the microbial communities and FA inhibition may provide a competitive advantage to glycogen accumulating organisms (GAOs) over PAOs. Interestingly, the community composition was found irreversible by recovery (Dice coefficients, 36.3%), although good EBPR performance was re-achieved.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 148, November 2013, Pages 343-351
Journal: Bioresource Technology - Volume 148, November 2013, Pages 343-351
نویسندگان
Xiongliu Zheng, Peide Sun, Juqing Lou, Jing Cai, Yingqi Song, Shenjing Yu, Xuanyu Lu,