کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
36279 45127 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Specific nutrient removal rates in saline wastewater treatment using sequencing batch reactor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Specific nutrient removal rates in saline wastewater treatment using sequencing batch reactor
چکیده انگلیسی

Effects of salt concentration (0–6%, w/v) on specific nutrient removal rates from saline wastewater in a sequencing batch reactor (SBR) were investigated. The sequencing batch operation consisted of anaerobic, oxic, anoxic and oxic phases with hydraulic residence times (HRT) of 1/3/1/1 h and a settling phase of 3/4 h. Solids retention time (SRT) was kept constant at 10 days in all experiments. Specific nutrient (COD, NH4-N and PO4-P) removal rates decreased with increasing salt concentration due to adverse effects of salt on microorganisms. A salt tolerant organism, Halobacter halobium was added to the activated sludge culture (1/1, v/v) in order to improve the nutrient removal performance of the SBR. Nutrient removal performances of Halobacter-free and Halobacter-added activated sludge cultures were compared for all salt contents tested. Specific rates of nutrient removal obtained with the Halobacter-added culture were higher that those of Halobacter-free activated sludge, especially at high salt contents.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Process Biochemistry - Volume 41, Issue 1, January 2006, Pages 61–66
نویسندگان
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