caa a22 4500 605500320 CHVBK 20210128100555.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00253-014-6221-6 doi (NATIONALLICENCE)springer-10.1007/s00253-014-6221-6 Regulation of dissolved oxygen from accumulated nitrite during the heterotrophic nitrification and aerobic denitrification of Pseudomonas stutzeri T13 [Elektronische Daten] [Yilu Sun, Ang Li, Xuening Zhang, Fang Ma] The nitrogen-removing characteristics of Pseudomonas stutzeri T13, a heterotrophic nitrifying-aerobic denitrifying bacterium, were investigated. The ammonium and nitrate removal of the bacterium was found to reach nearly 100% at 15h. However, the total nitrogen (TN) removal rate reached only about 23.47% because of the dramatic accumulation of nitrite at a high dissolved oxygen (DO) level (160rpm). The process of nitrite reduction was found to be the bottleneck for the efficiency of aerobic denitrification. Decreasing the shaking speed from 160 to 50rpm to lower the DO concentration during cultivation was an effective method of improving nitrite utilization because nitrite removal increased from 62.37 to 100%. The 99.21% capability of simultaneous heterotrophic nitrification and aerobic denitrification with TN removal was achieved at a relatively low DO level (50rpm). Springer-Verlag Berlin Heidelberg, 2014 Heterotrophic nitrification-aerobic denitrification nationallicence Accumulation of nitrite nationallicence TN removal nationallicence DO regulation nationallicence Sun Yilu State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090, Harbin, People's Republic of China aut Li Ang State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090, Harbin, People's Republic of China aut Zhang Xuening State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090, Harbin, People's Republic of China aut Ma Fang State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090, Harbin, People's Republic of China aut Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/7(2015-04-01), 3243-3248 0175-7598 99:7<3243 2015 99 253 https://doi.org/10.1007/s00253-014-6221-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00253-014-6221-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sun Yilu State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090, Harbin, People's Republic of China aut NATIONALLICENCE 700 1- Li Ang State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090, Harbin, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Xuening State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090, Harbin, People's Republic of China aut NATIONALLICENCE 700 1- Ma Fang State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090, Harbin, People's Republic of China aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/7(2015-04-01), 3243-3248 0175-7598 99:7<3243 2015 99 253