Effect of inorganic carbon concentration on the stability and nitrite-oxidizing bacteria community structure of the CANON process in a membrane bioreactor

In the completely autotrophic nitrogen removal over nitrite (CANON) process, the nitrite-oxidizing bacteria (NOB) should be effectively suppressed or thoroughly washed out. In this study, the nitrate production and the structure of NOB community under different inorganic carbon (IC) concentrations w...

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Veröffentlicht in:Environmental technology. - 1998. - 39(2018), 4 vom: 22. Feb., Seite 457-463
1. Verfasser: Zhang, Xiaojing (VerfasserIn)
Weitere Verfasser: Zhou, Yue, Ma, Yongpeng, Zhang, Nan, Zhao, Siyu, Zhang, Rongrong, Zhang, Jun, Zhang, Hongzhong
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article CANON Inorganic carbon (IC) NOB Nitrobacter Nitrospira Nitrites
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520 |a In the completely autotrophic nitrogen removal over nitrite (CANON) process, the nitrite-oxidizing bacteria (NOB) should be effectively suppressed or thoroughly washed out. In this study, the nitrate production and the structure of NOB community under different inorganic carbon (IC) concentrations were investigated using denaturing gradient gel electrophoresis (DGGE) in a membrane bioreactor (MBR). Results showed that IC decrease correspondingly lowered the nitrogen removal, and simultaneously induced the nitrate production by NOB. DGGE results indicated the IC deficit led to the biodiversity increasing of both Nitrobacter-like NOB and Nitrospira-like NOB. An equation fitted between the ratio of nitrate production to ammonia consumption ([Formula: see text]) and the ratio of influent IC to ammonia concentration ([Formula: see text]) indicated the influent [Formula: see text] should be controlled between 1.6 and 2.3 to ensure the stable operation of the CANON process. A small amount addition of organic material could be used as an effective strategy to suppress NOB when the [Formula: see text] ratio was not appropriate 
650 4 |a Journal Article 
650 4 |a CANON 
650 4 |a Inorganic carbon (IC) 
650 4 |a NOB 
650 4 |a Nitrobacter 
650 4 |a Nitrospira 
650 7 |a Nitrites  |2 NLM 
700 1 |a Zhou, Yue  |e verfasserin  |4 aut 
700 1 |a Ma, Yongpeng  |e verfasserin  |4 aut 
700 1 |a Zhang, Nan  |e verfasserin  |4 aut 
700 1 |a Zhao, Siyu  |e verfasserin  |4 aut 
700 1 |a Zhang, Rongrong  |e verfasserin  |4 aut 
700 1 |a Zhang, Jun  |e verfasserin  |4 aut 
700 1 |a Zhang, Hongzhong  |e verfasserin  |4 aut 
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