Integrated self-forming dynamic membrane (SFDM) and membrane-aerated biofilm reactor (MABR) system enhanced single-stage autotrophic nitrogen removal

2021 ◽  
pp. 126554
Author(s):  
Muhammad Ahmar Siddiqui ◽  
Basanta Kumar Biswal ◽  
Buddhima Siriweera ◽  
Guanghao Chen ◽  
Di Wu
Chemosphere ◽  
2007 ◽  
Vol 69 (5) ◽  
pp. 776-784 ◽  
Author(s):  
Zheng Gong ◽  
Fenglin Yang ◽  
Sitong Liu ◽  
Han Bao ◽  
Shaowei Hu ◽  
...  

2015 ◽  
Vol 36 (14) ◽  
pp. 1819-1827 ◽  
Author(s):  
Kai Li ◽  
Fang Fang ◽  
Jinsong Guo ◽  
Youpeng Chen ◽  
Jixiang Yang ◽  
...  

2020 ◽  
Vol 81 (5) ◽  
pp. 1071-1079
Author(s):  
Caimeng Wang ◽  
Lirong Lei ◽  
Fangrui Cai ◽  
Youming Li

Abstract In this study, the completely autotrophic nitrogen removal over nitrite (CANON) process was initiated in a sequencing batch biofilm reactor (SBBR). Then the reactor was operated under different IC/N ratios. The total inorganic nitrogen removal efficiency (TINRE) at IC/N ratios of 0.75, 1.0, 1.25, 1.5 and 2.0 were 37.0 ± 11.0%, 58.9 ± 10.2%, 73.9 ± 3.2%, 73.6 ± 1.8% and 72.6 ± 2.0%, respectively. The suitable range of IC/N ratio in this research is 1.25–2.0. The poor nitrogen removal performance at IC/N ratio of 0.75 was due to the lack of growth substrate for AnAOB and low pH simultaneously; at IC/N ratio of 1.0 this was because the substrate concentration was insufficient for fully recovering the AnAOB activities. Microbial analysis indicated that Nitrosomonas, Nitrospira and Candidatus Brocadia were the main ammonium oxidation bacteria (AOB), nitrite oxidation bacteria (NOB) and anammox bacteria (AnAOB), respectively. In addition, at IC ratios of 1.25 or higher, denitrification was promoted with the rise of IC/N ratio, which might be because the change of IC concentrations caused cell lysis of microorganisms and provided organic matter for denitrification.


2015 ◽  
Vol 260 ◽  
pp. 64-73 ◽  
Author(s):  
Miguel Mauricio-Iglesias ◽  
Anna Katrine Vangsgaard ◽  
Krist V. Gernaey ◽  
Barth F. Smets ◽  
Gürkan Sin

2011 ◽  
Vol 378-379 ◽  
pp. 428-432
Author(s):  
Yu Qin ◽  
Jing Song Guo ◽  
Fang Fang

PCR-DGGE was applied to analyze the relationship between pH and the microbial community structure of Sequence Batch Biofilm Reactor (SBBR) autotrophic nitrogen removal process. The reactor was possessed of a high nitrogen removal efficiency at pH=8.0 where the similarity of microbial community structure between active sludge and biofilm samples was the lowest about 84.6% and the richness of bacterial community was the most abundant in biofilm compared with other pH conditions. pH=7.0 was good for the microbes in active sludge but unfavorable for anaerobic bacteria. At pH=9.0, the effects were presented with both bacterial activities and microbial community structure and when pH=6.0 the amount of microbial types dramatically dropped


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