中文摘要：

用人工驯养的厌氧污泥进行除铀实验,探讨了微生物投加量（VSS）、pH值、U（Ⅵ）初始浓度、外加电子供体和污泥重复利用等对污泥处理U（Ⅵ）的影响,并进行了相关机理分析。实验结果表明,在适当的pH范围内（5.2～6.6）,厌氧污泥对铀保持较长时间的高效去除率;当以还原铁粉和无水乙醇作电子供体时,U（Ⅵ）去除率保持在95%以上的时间为未加电子供体时的2倍。U（Ⅵ）去除速度与VSS投加量成正比关系,U（Ⅵ）初始浓度对去除效果的影响不大,厌氧污泥可以长期使用。pH值的影响最关键,其次是外加电子供体。厌氧污泥除U（Ⅵ）机理为氧化还原和吸附的共同作用。

英文摘要：

This paper focused on the bioremediation ability of anaerobic sludge which artificially domestica- ted. The affecting factors such as different VSS dosages, pH, U （ WI ） initial concentration, addition of electron donors, reuse of anaerobic sludge were studied by batch experiments and the mechanisms for U （WI） removal were discussed. The results showed that pH is one of the key factors which influenced the experiment. High U （WI） removal rate could be reached only under proper pH （5.2 - 6.6）. Batch experiment which added zero- valent iron or ethanol as electron donors showed 2 times longer time lasted with high U （ VI ） removal ratio of 95%. The speed of U（VI） removal was in proportion to the VSS dosage. Different initial U（VI） concentrations have little influence on U （ WI ） removal rate. The anaerobic sludge can be reused and the mechanisms for U （ Wl ） removal are redox and adsorption.