厌氧氨氧化菌
反硝化
反硝化细菌
自养
硝酸盐
化学
环境化学
生物量(生态学)
人口
氨
氮气
环境工程
细菌
环境科学
生态学
生物
生物化学
有机化学
人口学
社会学
遗传学
作者
Sen Qiao,Xin Yin,Jiti Zhou,Li'e Wei,Jun Zhong
出处
期刊:Chemosphere
[Elsevier]
日期:2018-03-01
卷期号:195: 817-824
被引量:22
标识
DOI:10.1016/j.chemosphere.2017.12.058
摘要
In this study, an autotrophic denitrification process was successfully coupled with anammox to remove the nitrate by-product via electrochemical technology. When the voltage applied to the combined electrode reactor was 1.5 V, the electrode reaction removed nitrate by using the autotrophic denitrification biomass without affecting the anammox biomass. The nitrogen removal efficiency of the combined electrode reactor reached 99.1% without detectable nitrate at an influent NO2−-N/NH4+-N ratio of 1.5. On day 223, using the model calculations based on reaction equations, 19.7% of total nitrogen was removed via the autotrophic denitrification process, while the majority of nitrogen removal (approximately 79.4%) was attributed to the anammox reaction. Small variations of the population numbers and community structure of artificial bacteria according to electron microscopy predicted that the anammox and autotrophic denitrifying biomasses could coexist in the electrode reactor. Then, 16S rRNA analysis determined that the anammox biomass group was always dominant in mixed flora during continuous cultivation.
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