Biodegradation of trace pharmaceutical substances in wastewater by a membrane bioreactor
The biodegradation of selected pharmaceutical micropollutants,ibuprofen(rap),clofibric acid(CA),diclofenic(DCF)and carbamazepine(CBZ),was studied by a lab-scale membrane bioreactor(MBR)under different hydraulic retention time(HRT)and pH.CA with contradictive biodegradation reports was degraded almost completely at different HRTs(1 day,3 days and 8 hours)after adaptation to microorganisms in the MBR.The biodegradation of CA was disturbed in the low pH operation but theactivity of microorganisms Was recovered again after adjustment to the neutral.IBP was degraded both in neutral and acidic conditions.Removals of IBP and CA were zero—order and first-order reactions under high and low initial concentrations respectively.CBZ and DCF Were not degraded in this study regardless of HRTs and pH.
Pharmaceuticals Membrane bioreactor Activated sludge Reaction kinetics
BO Long-li TARO Urase WANG Xiao-chang
School of Environmental and Municipal Engineering,Xian University of Architecture and Technology,Xi Department of Civil Engineering,Tokyo Institute of Technology,Ookayama 2-12-1,Meguro,Tokyo 152-8552,
国际会议
西安
英文
541-546
2008-05-15（万方平台首次上网日期，不代表论文的发表时间）