基于内循环折流式反应器的同步硝化反硝化  

Simultaneous nitrification and denitrification based on internal circulation baffled reactor

作　　者：陆晓娅[1] 徐华[1] 徐晨[1] 黄琼琳[1] 贾楚楚 张永明[1] 

机构地区：[1]上海师范大学生命与环境科学学院,上海200234

出　　处：《上海师范大学学报（自然科学版）》2014年第3期304-309,共6页Journal of Shanghai Normal University(Natural Sciences)

基　　金：国家自然科学基金项目(50978164);国家教育部博士点基金项目(20113127110002)

摘　　要：采用一种内循环折流式生物反应器进行脱氮实验.分别用硝酸盐、亚硝酸盐和氨作为氮源配制模拟废水进行研究.结果表明:该反应器具有良好的除氮功能.当以硝酸盐或亚硝酸盐为氮源时,总氮与硝酸盐、亚硝酸盐的去除速率几乎相同,其降解规律可以用分数级动力学进行很好地拟合,其反应级数为0.88.当以氨作为氮源时,可以实现同步硝化和反硝化.此时氨氮的去除仍可以0.88级动力学进行描述.而总氮的去除规律符合3级反应动力学.在相同的碳氮比(C/N)情况下,硝酸盐和亚硝酸盐的去除速率远大于氨氮的去除速率,且总氮的去除速率随C/N的增加而增加.Nitrogen removal experiments were carried out by using an internal circulation baffled bioreactor （ICBBR）. Nitrate, nitrite and ammonia were used as N source for nitrogen removal experiments. The ICBBR has high nitrogen removal capacity. The removal rates of total nitrogen, nitrate, and nitrite are almost the same. When nitrate and nitrite were used as N sources their ki- netic orders were 0. 88. When ammonia was used as N source simultaneous nitrification and denitrifieation （SND） was realized in ICBBR and ammonia removal fitted also 0. 88 order kinetics, but total nitrogen removal fitted third-order kinetics. Nitrate and ni- trite removal rates were faster than ammonia removal rate under the same C/N ratio, and total nitrogen removal rate increased with increasing C/N ratio.

关 键 词：内循环折流式生物反应器 生物反应动力学 同步硝化反硝化 

分 类 号：X522[环境科学与工程—环境工程]