摘要
采用间歇试验,以葡萄糖为碳源,加入不同量硝酸盐的人工配水进行不同m(COD)/m(NO3--N)下厌氧同时反硝化产甲烷研究。当m(COD)/m(NO3--N)≥7时,发生厌氧同时反硝化产甲烷反应;而m(COD)/m(NO3--N)=3或5时,反硝化不完全,未发生产甲烷过程。进一步通过与单独产甲烷体系对照,发现反硝化过程对产甲烷过程存在抑制。随着m(COD)/m(NO3--N)的增大,体系对NO3--N的去除率越高,直到100%。且发现同时反硝化产甲烷体系中,优先利用丙酸,乙酸积累,而后被利用。
The effect of m（COD）/m（NO3--N） on anaerobic simultaneous denitrification and methanogensis using glucose as substrate was conducted in bench scale.Experimental results showed that anaerobic simultaneous denitrification and methanogenesis process were observed at m（COD）/m（NO3--N）≥7.However,when m（COD）/m（NO3--N） was less than 5,only denitrification process occurred without any methane production in the reaction period of this study,indicating that methanogenesis was inhibited by denitrification process.NO3--N removal efficiency increased with the increase of m（COD）/ m（NO3--N）.In the matrix of anaerobic simultaneous denitrification and methanogenesis,propionate acid was utilized easily by denitrifers compared with acetate acid.
出处
《水处理技术》
CAS
CSCD
北大核心
2012年第4期21-24,34,共5页
Technology of Water Treatment
基金
国家自然科学基金(51178326)
