سال انتشار: ۱۳۸۸

محل انتشار: اولین کنفرانس بین المللی تصفیه فاضلاب و بازیافت آب، فناوری ها و یافته های نو

تعداد صفحات: ۸

نویسنده(ها):

S Amiri – School of Chemical Engineering, College of Engineering, University of Tehran, P. O. Box 11155-4563, Tehran, Iran
M.R Mehrnia – School of Chemical Engineering, College of Engineering, University of Tehran, P. O. Box 11155-4563, Tehran, Iran
H Azami – School of Chemical Engineering, College of Engineering, University of Tehran, P. O. Box 11155-4563, Tehran, Iran
D Barzegari – School of Chemical Engineering, College of Engineering, University of Tehran, P. O. Box 11155-4563, Tehran, Iran

چکیده:

Presence of heavy metals is considered to be a major challenge in wastewater treatment. In this research the effect of heavy metals such as Nickel (Ni), Chromium (Cr), and Manganese (Mn) on biofouling in membrane bioreactors (MBRs) was investigated. Biofouling tendency of a cellulose acetate membrane was evaluated in MBRs with different concentrations of the mentioned compounds. The concentrations of extractable EPS in the mixed liquor at the steady-state condition and different concentrations of heavy metals were compared. Also the effects of concentration of heavy metals on mean floc diameter and hydrophobicity, and hence the biofouling propensity of membrane was investigated. Results showed that different concentrations of heavy metals in wastewater had different effects on sludge properties and hence induced the different fouling tendency of sludge.