脉冲式SBR处理垃圾渗滤液短程深度脱氮工艺特性  

The process characteristics of the pulsed-SBR for advanced nitrogen removal via nitrite pathway from landfill leachate

作　　者：孙洪伟[1,2] 尤永军 彭永臻[2] 王淑莹[2] 

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070 [2]北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124

出　　处：《中国环境科学》2014年第5期1139-1144,共6页China Environmental Science

基　　金：国家自然科学基金资助项目(51168028);甘肃省青年基金计划项目(1107RJYA279);兰州交通大学“大学生创新性实验计划”项目(20140042)

摘　　要：以城市垃圾渗滤液为研究对象,采用脉冲式SBR工艺进行短程深度脱氮试验研究.基于理论分析,建立了进水次数对脉冲式SBR法脱氮效率的影响公式,同时应用过程控制优化工艺运行.结果表明,脉冲式SBR工艺通过短程生物脱氮途径,NH4+-N和TN的去除率分别达到95.8%和90.0%以上,最终出水NH4+-N和TN分别低于5.0,15.0mg/L.精准的过程控制是脉冲式SBR工艺短程生物脱氮实现及稳定的主要因素.随着进水次数的增加,外碳源投加量明显减少.因此,采用脉冲式SBR处理垃圾渗滤液,可实现深度脱氮和节省运行费用双重目的.The pulsed-SBR process was used to achieve the advanced nitrogen removal via nitrite pathway from landfill leachate. The effect of feed frequency on the process characteristic of pulse-SBR was discussed theoretically and nitrogen removal efficiency formula was established. The operation of the SBR under alternating aerobic-anoxic conditions was optimized by process control. The experimental results showed that up to 95.8%NH4＋-N and 90.0%TN were eliminated via nitrite from leachate in the pulsed-SBR and advanced nitrogen removal was successfully obtained. The accurate on-line process control was main factor of the achievement and stabilization of partial biological nitrogen removal. With increasing feed frequency, the external carbon source dosage decreased obviously. Therefore, the objectives of saving external carbon source dosage and achieving advanced nitrogen removal were obtained when pulsed-SBR was used to treat landfill leachate.

关 键 词：脉冲式SBR工艺 分段进水 垃圾渗滤液 短程生物脱氮 过程控制 

分 类 号：X703.1[环境科学与工程—环境工程]