期刊论文

Xie, S.

中文

环境工程学报

1673-9108

2013

7

6

2081-2086

国家自然科学基金资助项目（11175081）； 湖南省科技计划重点项目（2011SK2015）； 湖南省创新平台基金项目（09K076）；

本校为第一且通讯机构

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。

This paper focused on the bioremediation ability of anaerobic sludge which artificially domesticated. The affecting factors such as different VSS dosages, pH, U(VI) initial concentration, addition of electron donors, reuse of anaerobic sludge were studied by batch experiments and the mechanisms for U(VI) removal were discussed. The results showed that pH is one of the key factors which influenced the experiment. High U(VI) 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 w...