摘要
采用还原性铁粉和硫酸盐还原菌协同生物还原沉淀消除铀矿冶废水中的放射性U污染,研究pH值、SO42-和铀的初始浓度对ZVI-SRB协同还原沉淀U的影响。结果表明,溶液中的pH值对U生物沉淀存在显著影响,在pH为6.0时,铀的除去率在24h内高达90.5%,随pH值的降低溶液中铀的除去率降低。铀的初始浓度和SO42-的浓度对ZVI-SRB体系协同还原沉淀U影响比单纯SRB处理要小。利用ZVI-SRB处理溶液中的铀废水的放射性U污染具有重要意义。
Reductive iron and sulfate-reducing bacteria synergies bioreduction is applied to eliminate uranium radioactive pollution in wastewater.The effects of the initial uranium concentration,SO42-and pH on ZVI-SRB uranium precipitation process are investigated.The results show that the uranium biological precipitation is significantly influence by the solution of pH,the uranium removed rate is as high as 90.5% in 24h at of pH=6.0,and the uranium removed rate is decreased with the lowering of the solution pH.The initial uranium concentration and the concentration of SO42-have the less effect on ZVI-SRB system synergies reduction sedimentation than that the SRB simply.Therefore,using of ZVI-SRB to treat the radioactive uranium pollution from wastewater is of great significance.
出处
《有色金属》
CSCD
北大核心
2011年第1期88-91,共4页
Nonferrous Metals
基金
国家自然科学基金资助项目(50774047)
湖南省教育厅重点项目(10A103)
关键词
冶金技术
铀溶液
硫酸盐还原菌
零价铁
metallurgical technology
Uranium solution
sulfate-reducing-bacteria
zero-valent iron
