Liu Zheng-chuan, Yuan Lin-jiang, Zhou Guo-biao, Li Jing
Huan Jing Ke Xue. 2015 Sep;36(9):3345-51.
The transformation of nitrite-reducing anaerobic ammonium oxidation to sulfate-reducing anaerobic ammonium oxidation in an UASB was performed and the changes in microbial community were studied. The result showed that the sulfate reducing anaerobic ammonium oxidation process was successfully accomplished after 177 days' operation. The removal rate of ammonium nitrogen and sulfate were up to 58. 9% and 15. 7%, the removing load of ammonium nitrogen and sulfate were 74. 3 mg.(L.d)-1 and 77. 5 mg.(L.d)-1 while concentration of ammonium nitrogen and sulfate of influent were 130 mg.(L.d)-1 and 500 mg.(L.d)-1, respectively. The lost nitrogen and sulphur was around 2 in molar ratio. The pH value of the effluent was lower than that of the influent. Instead of Candidatus brocadia in nitrite reducing anaerobic ammonium oxidation granular sludge, Bacillus benzoevorans became the dominant species in sulfate reducing anaerobic ammonium oxidation sludge. The dominant bacterium in the two kinds of anaerobic ammonium oxidation process is different. Our results imply that the two anaerobic ammonium oxidation processes are carried out by different kind of bacterium.
在升流式厌氧污泥床（UASB）中实现了从亚硝酸盐还原厌氧氨氧化到硫酸盐还原厌氧氨氧化的转变，并研究了微生物群落的变化。结果表明，经过177天的运行，硫酸盐还原厌氧氨氧化过程成功完成。进水氨氮和硫酸盐浓度分别为130mg/（L·d）和500mg/（L·d）时，氨氮和硫酸盐的去除率分别高达58.9%和15.7%，氨氮和硫酸盐的去除负荷分别为74.3mg/（L·d）和77.5mg/（L·d）。损失的氮和硫的摩尔比约为2。出水pH值低于进水。在硫酸盐还原厌氧氨氧化污泥中，苯甲酰芽孢杆菌取代了亚硝酸盐还原厌氧氨氧化颗粒污泥中的“Candidatus brocadia”成为优势菌种。两种厌氧氨氧化过程中的优势细菌不同。我们的结果表明，两种厌氧氨氧化过程由不同种类的细菌进行。
