کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
627197 1455459 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Treatment of swine wastewater by submerged membrane bioreactors with consideration of estrogenic activity removal
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Treatment of swine wastewater by submerged membrane bioreactors with consideration of estrogenic activity removal
چکیده انگلیسی

A model laboratory scale membrane bioreactor (MBR) for the treatment of swine wastewater has been studied to illustrate the removal mechanisms of selected endocrine disrupting compounds (EDCs). A pilot scale MBR was also operated to confirm the results from the laboratory scale study. Liquid extraction with cyclohexane followed by yeast estrogen screen (YES) assay was used to determine the estrogenic activity (EA) of wastewater and sludge samples. Both laboratory and pilot scale MBRs were demonstrated to be effective systems for EA removal from swine wastewater. The average removal rate was 93.5% in terms of EA in the soluble phase of swine wastewater, and 94.5% in terms of total EA. During the steady-state operation period total COD removal efficiencies ranged from 68.5% to 82.7% and up to 99.9% removal of NH3-N was achieved with proper pH control. A model mass balance revealed that over 85% of the influent EA was reduced through MBR process by degradation or evaporation. An average of 9.4% of the influent EA was removed from the MBR system in the wasted sludge, whereas 5.4% of the EA in the influent was found in the treated effluent.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 231, Issues 1–3, 31 October 2008, Pages 200-208