水动力条件对全程自养脱氮工艺启动研究  

Study on Hydrodynamic Conditions on Start-up of CANON Process

作　　者：操家顺[1,2,3] 漆磊[2] 薛朝霞[1,2,3] 赵昌爽[2] 阮仁俊[2] 

机构地区：[1]河海大学,浅水湖泊综合治理与资源开发教育部重点实验室,南京210098 [2]河海大学环境学院,南京210098 [3]河海大学水资源高效利用与工程研究中心,南京210098

出　　处：《工业安全与环保》2016年第3期57-61,共5页Industrial Safety and Environmental Protection

基　　金：国家重大科技专项(2014ZX07305-002-02)

摘　　要：CANON工艺需要部分短程硝化提供亚硝酸盐,所以CANON工艺存在溶解氧难控制的问题,特别是在反应器较小的情况。本文采用设有挡板的改良SBR,通过机械搅拌形成剧烈水流搅动,精确控制溶解氧,研究了不同搅拌速率对CANON工艺启动的影响。结果表明,机械曝气能成功启动了CANON工艺,且获得平均总氮去除率达79.40%,剪切应力的提高有利于脱氮性能的提升,机械曝气启动方式相比于鼓风曝气更加容易控制。CANON process need nitrite by shortcut nitrification,so there exists a problem,dissolved oxygen is hard to be controlled,in the CANON process,especially when happened in small reactor. The improved SBR is applied,equipped with baffles,to control dissolved oxygen accurately through mechanical stirring and study the effects of different stirring speed on the CANON start-up. The results show the mechanical stirring can start-up the CANON process successfully,the mean TN removal efficiency is up to 79. 40% and the mechanical stirring helps to improve nitrogen removal performance in CANON system,which is easier to be controlled than blast aeration.

关 键 词：CANON 机械曝气 搅拌速率 剪切应力 溶解氧 

分 类 号：X703[环境科学与工程—环境工程]