%0 Journal Article
%T Study on the Nitrogen Removal Performance and the Characteristics of Denitrification Bacterial Community Structure of Biological Aerated Filter<br>曝气生物滤池工艺脱氮性能及反硝化细菌群落结构特征研究
%A 彭晓兰
%A 刘聪
%A 陈吕军
%J 环境科学
%D 2012
%I 
%X The nitrogen removal performance and the denitrification bacterial community structure of two pre-denitrification biological aeration filter (BAF) processes with different media combinations, the ceramic-zeolite BAF process (C-Z BAF) and the zeolite-ceramic BAF process (Z-C BAF), were compared at different C/N ratios. The results showed that the average TN removal efficiency of Z-C BAF was higher than that of C-Z BAF, and the advantage was more notable at low C/N ratio. When the C/N ratio decreased to 3.3, the average TN removal efficiency of Z-C BAF was 20% higher than that of C-Z BAF. Comparing the microbial community structure of the two combinations at different C/N ratios, it was found that the richness and diversity of denitrification bacterial community decreased significantly with the decrease of C/N ratio. At low C/N ratio, within the whole oxic filter of Z-C BAF, nosZ genetic T-RFs were detected with more than 20% relative abundance, whereas no nosZ genetic T-RFs were detected at the upper oxic filter of C-Z BAF by PCR amplification. The results indicated that the simultaneous nitrification and denitrification function of Z-C BAF was better than that of C-Z BAF. At low C/N ratio, the nitrogen removal efficiency of Z-C BAF was obviously higher than that of C-Z BAF. Thus, compared to C-Z BAF, Z-C BAF had greater potential on the treatment of wastewater with low organic concentration and low C/N ratio.
%K biological aerated filter(BAF)
%K pre-denitrification process
%K C/N
%K T-RFLP
%K denitrification bacterial community structure<br>曝气生物滤池
%K 前置反硝化脱氮工艺
%K C/N
%K T-RFLP
%K 反硝化细菌群落结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=669A8D56CCC2B6A161EB79E3C8BC4323&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=5D311CA918CA9A03&sid=6A7AF832AB04FD6A&eid=C244C42120BE39BF&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=18