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Quantitative and qualitative studies of microorganisms involved in full-scale autotrophic nitrogen removal performance
AIChE Journal ( IF 3.7 ) Pub Date : 2017-08-25 23:05:32 , DOI: 10.1002/aic.15925
Barbara Muñoz-Palazon 1 , Alejandro Rodriguez-Sanchez 1 , Antonio Castellano-Hinojosa 2 , Jesus Gonzalez-Lopez 1, 2 , Mark C. M. van Loosdrecth 3 , Riku Vahala 4 , Alejandro Gonzalez-Martinez 4
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Autotrophic nitrogen removal systems have been implemented at full-scale and provide an efficient way for nitrogen removal from industrial and urban wastewaters. Our study present qualitative and quantitative analysis of archaeal and bacterial amoA genes and Candidatus Brocadiales bacteria analyzed in six full-scale autotrophic nitrogen removal bioreactors. The results showed that ammonium oxidizing bacteria (AOB) were detected in all bioreactors. However, ammonium oxidizing archaea (AOA) were detected only in the non-aerated technologies. Conversely, different Candidatus Brocadiales phylotypes appeared due to differences in influent wastewater composition and hydraulic retention time (HRT). In the same terms multivariate redundancy analysis confirmed that AOA was positively correlated with temperature, ammonium concentration and low HRT. However, AOB population was positively correlated with pH, temperature, and dissolved oxygen concentration. Our data suggested a correlation between the microorganisms involved in the nitrogen removal performance and the operational conditions in the different full-scale bioreactors. © 2017 American Institute of Chemical Engineers AIChE J, 2017

中文翻译:

定量和定性研究涉及微生物自养全氮的去除性能

自养型氮去除系统已全面实施,为从工业和城市废水中去除氮提供了有效的途径。我们的研究提出了定性和定量分析的古细菌和细菌amoA基因和念珠菌细菌在六个全尺寸自养脱氮生物反应器中进行了分析。结果表明,在所有生物反应器中均检出了铵氧化细菌(AOB)。但是,仅在未充气的技术中检测到了氧化铵古细菌(AOA)。相反,由于进水废水成分和水力停留时间(HRT)的不同,出现了不同的念珠菌系统型。同样,多变量冗余分析证实AOA与温度,铵浓度和低HRT正相关。然而,AOB种群与pH,温度和溶解氧浓度呈正相关。我们的数据表明,参与脱氮性能的微生物与不同规模生物反应器中的操作条件之间存在相关性。©2017美国化学工程师学会AIChE的Ĵ,2017年
更新日期:2017-08-28
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