水源水生物处理工艺中亚硝酸盐氮的去除

通过中试规模试验系统 ,分析了不同运行条件下微污染水源水生物接触氧化处理工艺中亚硝酸盐氮的去除状况 ,探讨了亚硝酸盐氮积累量与氨氮去除率之间的关系。指出处理系统中硝酸盐细菌对亚硝酸盐细菌生化过程的依赖作用是亚硝酸盐氮积累的内因 ,而工艺参数等运行条件的变化是亚硝酸盐氮积累的外因 ,提高氨氮去除率是去除亚硝酸盐氮的关键。

Removal of Nitrite-Nitrogen in Source Water by Biological Process

Based on the pilot scale experimental system operated under different conditions,the removal of nitrite nitrogen in slightly polluted source water by the biological contact oxidation process has been analyzed.The relation between nitrite nitrogen accumulation amount and ammonia nitrogen removal efficiency has been discussed.It was given that the dependence of nitrate bacteria on the biochemical reaction of nitrite bacteria in the treatment system was the internal cause for nitrite nitrogen accumulation,and the variation of the operation conditions such as process parameters was the external cause for nitrite nitrogen accumulation.The key to remove nitrite nitrogen was to improve the removal of ammonia nitrogen efficiency.