کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
684623 | 889024 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The treatment of cheese whey wastewater by sequential anaerobic and aerobic steps in a single digester at pilot scale
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The treatment of cheese whey wastewater by sequential anaerobic and aerobic steps in a single digester at pilot scale The treatment of cheese whey wastewater by sequential anaerobic and aerobic steps in a single digester at pilot scale](/preview/png/684623.png)
چکیده انگلیسی
The treatment of reconstituted whey wastewater was performed in a 400 L digester at 20 °C, with an anaerobic digestion step, followed by a step of aerobic treatment at low oxygen concentration in the same digester. In a first set of 48 cycles, total cycle time (TC) of 2, 3 and 4 days were tested at varying organic loading rates (OLR). The COD removal reached 89 ± 4, 97 ± 3 and 98 ± 2% at TC of 2, 3 and 4 days and OLR of 0.56, 1.04 and 0.78 gCOD Lâ1 dâ1, respectively. The activity of the biomass decreased for the methanogenic population, while increasing by 400% for the acidogens, demonstrating a displacement in the predominant trophic group in the biomass bed. A second set of 16 cycles was performed with higher soluble oxygen concentration in the bulk liquid (0.5 mg Lâ1) during the aerobic treatment at a TC of 2 days and an OLR of 1.55 gCOD Lâ1 dâ1, with a soluble COD removal of 88 ± 3%. The biomass specific activities showed a compartmentalization of the trophic group with methanogenic activity maintained in the biomass bed and a high acidogenic activity in the suspended flocs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 100, Issue 18, September 2009, Pages 4156-4163
Journal: Bioresource Technology - Volume 100, Issue 18, September 2009, Pages 4156-4163
نویسندگان
J.-C. Frigon, J. Breton, T. Bruneau, R. Moletta, S.R. Guiot,