摘要
利用环流曝气塔进行同时硝化 /反硝化 (SND)脱氮实验 .实验中 ,分别采用不同降解性能的碳源以及采用不同的碳源投加方式 ,研究反应器内的脱氮过程 ,监测处理过程中NO-x N浓度和溶解氧DO的变化 .实验显示 ,在COD 80 0mg/L +80 0mg/L的分批加料方式下 ,NH+ 4 N的降解得到加强 ,出水中NH+ 4 N浓度低于 3mg/L ;利用较难降解物质作为碳源时 ,利于反应器内低溶解氧条件的出现 ,促进了反硝化的进行 ,实验在采用醇类碳源时脱氮效果好于葡萄糖的情况 .
The simultaneity nitrification and denitrification (SND) was studied in a loop reactor. In the experiment, the research of biological nutrients removal was carried by changing carbon source and the method of adding carbon source, and the concentration of NO- x-N and the dissolved oxygen(DO) level were also inspected. The results indicated that the removal of NH 4-N could be enhanced by adding carbon source with COD 800mg/L+800 mg/L. And the concentration of NH 4-N in outlet was lower than 3mg/L; Lower DO level in the reactor could be made easily by using difficultly reduced carbon source. It was useful to improve the biological nutrients removal. When using ethanol or glycerol as carbon source, the removal efficiency of NH 4-N was better than using glucose.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2004年第1期158-160,共3页
Environmental Science
基金
国家"十五"科技攻关项目 (ZZ0 1 10 0 3 12 )
关键词
硝化
反硝化
硝态氮
溶解氧
环流曝气塔
nitrification
denitrification
NO- x-N
dissolved oxygen (DO)
loop reactor
