摘要： 选取淀粉、葡萄糖、丙酸钠、乙酸钠4种碳源，在m（COD）：m（NO₃^--N）=10条件下使用人工配水，采用间歇实验进行厌氧同时反硝化产甲烷的研究。结果显示，丙酸钠作碳源的体系有利于反硝化阶段快速进行，22 h时NO₃^--N去除率最高为95.21%；乙酸钠作碳源的体系有利于产甲烷阶段快速进行，反应结束时COD去除率最高为93.7%。4种碳源均有NO₂^--N和NH₄⁺-N中间产物出现，但NO₂^--N含量升高后又迅速降低，并未对反应造成影响。葡萄糖和淀粉为碳源时有少量NO₃^--N被异化为NH₄⁺-N。

关键词: 反硝化, 产甲烷, 厌氧, 碳源

Abstract: Using starch,glucose,sodium propionate,and sodium acetate as carbon sources,under m(COD):m (NO₃^--N)=10 condition,and using synthetic wastewater,intermittent experiments have been implemented for the research on anaerobic simultaneous denitrification and methanogenesis. The results show that the system using sodium propionate as carbon source is beneficial to the rapid speed of denitrification process. The highest NO₃^--N removing rate is 95.21%,at 22 hrs. The system using sodium acetate as carbon source is beneficial to the rapid speed of methanogenesis. The highest COD removing rate is 93.7%, at the end of the reaction. NO₂^--N and NH₄⁺-N intermediate products occur to all the four kinds of carbon sources. However,after NO₂^--N content has been increased,it gets decreased immediately,causing no influence on the reaction. When glucose and starch are used as carbon sources,a small amount of NO₃^--N is dissimilated to NH₄⁺-N.

Key words: denitrification, methanogenesis, anaerobic, carbon source

中图分类号: 

• X703