کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
626738 1455447 2009 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Wastewater reuse after treatment by tertiary ultrafiltration and a membrane bioreactor (MBR): a comparative study
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Wastewater reuse after treatment by tertiary ultrafiltration and a membrane bioreactor (MBR): a comparative study
چکیده انگلیسی

The quality of effluent from urban wastewater destined for reuse was compared after treatment by a submerged membrane bioreactor (MBR) and a conventional activated sludge system followed by ultrafiltration (CAS-U). The study was carried out at pilot scale, using an MBR module equipped with hollow-fibre ultrafiltration membranes fed with pre-treated raw urban wastewater, and a flat-membrane ultrafiltration module fed with effluent from a conventional activated sludge plant. A comparative analysis was carried out for physicochemical quality parameters (turbidity, suspended solids, colour and COD) and microbiological quality parameters (E. coli, faecal coliforms, total aerobic bacteria and coliphages). A particle distribution analysis (2–125 μm) was also undertaken. The two systems produced water with similar phsyicochemical characteristics, although the MBR proved more efficient at reducing COD. However, the colour of the MBR effluent was more marked. With regard to microbiological quality, the differences observed between the two systems were due to variations in the periods of chemical cleaning applied to the membranes in order to prevent progressive fouling of the permeate zone. Independently of the frequency of chemical cleaning, the MBR system proved more efficient at retaining coliphages.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 243, Issues 1–3, July 2009, Pages 32-41