Conditions of cultivating and characteristics of aerobic granular sludge in a completely mixed reactor
In order to investigate the possibility of cultivating aerobic granules in a continuous complete—mixing reactor,a continuous—flow turbulent bed biofilm reactor with working volume of 4 litres was used in the experiment.The reactor was seeded with mature biofilm from another running biofilm reactor.The experimental results showed that aerobic granular sludge could be cultivated in a completely mixed reactor under continuous.fiux mode.High COD loading(22.42 kg COD m-3d-1)。Short Hydraulic Retention Time(1.2h)and appropriate turbulence(200L air/h for 4 litres reactor)favored the formation of aerobic granular sludge.The granules obtained were smooth,high activity(76.54mgCOD/h.gVS)and good settling abifity(settling velocity was between 20.3-3 1.4m/h).On the contrary,long HRT and low loading were adverse for the stabilization of the granules and induced dispersion of granules ultimately underexperimental conditions.
completely mixed reactor aerobic granular sludge forming conditions characteristics
WANG Yi PENG Dangcong
School of Environmental and Municipal Engineering,Xian University of Architecture and Technology,Xian 710055,P R China
国际会议
西安
英文
535-540
2008-05-15（万方平台首次上网日期，不代表论文的发表时间）