用反硝化微生物脱除铀水冶工艺废水中的NO_3^-  

Remove of Nitrate in Effluent From Uranium Mining and Metallurgy With Denitrobacteria

作　　者：刘建[1] 孟运生[1] 郑英[1] 樊保团[1] 

机构地区：[1]核工业北京化工冶金研究院,北京101149

出　　处：《湿法冶金》2005年第4期212-217,共6页Hydrometallurgy of China

摘　　要：介绍了反硝化细菌菌种的采集和驯化培养方法,研究了溶液pH,SO42-、Cl-、NO3-质量浓度,CH3OH投加量,反应时间和反应温度对反硝化细菌脱除NO3-的影响;并用活性炭粒料生物滤床进行了脱除NO3-的连续试验。当按1 g NO3-投加1 mL CH3OH时,NO3-的脱除率>99%;生物滤床的脱NO3-负荷可达12~16 kg/(m3.d)。The method of denitrobacteria collection and domestication are introduced. The effect of main factors,such as solution pH, p（SO4^2- ）, p（Cl^- ）, p（NO3^- ）, dosage of methanol, reaction time and reaction temperature on removal of nitrate with denitrobacteria are examined. Series experiments by active-carbon bio-filter bed to remove nitrate were carried out. When V （methanol） to rn（nitrate） is 1 to 1, more than 99% of nitrate in solution can be removed. The throughput of bio-filter bed to remove nitrate is 12-16 kg/（m^3· d）.

关 键 词：生物脱氮 硝酸根 反硝化细菌 生物滤床 废水处理 

分 类 号：X758[环境科学与工程—环境工程]