Simultaneous ammonia and nitrate removal in an airlift reactor using poly(butylene succinate) as carbon source and biofilm carrier

Ruan, Yunjie; Deng, Yale; Guo, Xishan; Timmons, Michael B.; Lu, Haijun; Han, Zhen; Ye, Zhang-Ying; Shi, Mingming; Zhu, Songming

doi:10.1016/j.biortech.2016.06.056

Cited by 89 publications

(38 citation statements)

References 33 publications

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“…The dominate phylum and genus of the three reactors were illustrated in previous studies (Ruan et al 2016; Zhu et al 2015). Overall, Proteobacteria was the most dominant phylum in all samples among which Betaproteobacteria ranked first.…”

Section: Discussionsupporting

confidence: 67%

“…At genus level, Acidovorax , Simplicispira , Comamonas and Bradyrhizobium were the four dominant genera in Reactor I, whereas Azoarcus , Simplicispira , and OD1 were the main genera in both Reactor II and Reactor III (Ruan et al 2016; Zhu et al 2015). It was interesting to notice that Simplicispira was detected in all reactors with high abundance (15.76 ± 13.07%).…”

Section: Discussionmentioning

confidence: 99%

“…Though most of the denitrifying bacteria are facultative anaerobes, simultaneous ammonia and nitrate removal was achieved through precise DO control strategy in Reactor III (Ruan et al 2016). Denitrification produces less energy yield than oxygen respiration, therefore, a bacterial cell growing in aerobic conditions will choose to use oxygen as terminal electron acceptor and oxygen reversible inhibits the activities of the denitrification enzymes and regulate the denitrification gene expression (Kampschreur et al 2009).…”

Section: Discussionmentioning

confidence: 99%

“…The Reactor I (salinity, 0‰) and Reactor II (salinity, 25‰) were up flow fixed-bed anoxic denitrification reactors packed with PBS as carbon source and biofilm carrier as described in our previous study (Zhu et al 2015). The Reactor III was an airlift inner-loop sequencing batch reactor (salinity, 25‰) packed with PBS carriers to the volume of 50%, which was operated under intermittent aeration strategy as introduced in our previous work (Ruan et al 2016). The component of synthetic wastewater and real tilapia RAS wastewater used as influent were reported in previous study (Zhu et al 2015).…”

Section: Methodsmentioning

confidence: 99%

“…However, conflict denitrification performances were found in previous solid-phase denitrification with the present of DO. The negative effects were reported as the DO concentration increase in polyhydroxybutyrate (PHB) denitrification (Gutierrez-Wing et al 2012), while higher nitrate removal rates were obtained in PBS denitrification reactors under similar circumstances (Luo et al 2014; Ruan et al 2016). On the other side, the study related to the factor of salinity is still limiting, which only mentioned in PHB or PBS denitrification performance (Gutierrez-Wing et al 2012; Zhu et al 2015).…”

Section: Introductionmentioning

confidence: 99%

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The impact of DO and salinity on microbial community in poly(butylene succinate) denitrification reactors for recirculating aquaculture system wastewater treatment

et al. 2017

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The interactions between environmental factors and bacterial community shift in solid-phase denitrification are crucial for optimum operation of a reactor and to achieve maximum treatment efficiency. In this study, Illumina high-throughput sequencing was applied to reveal the effects of different operational conditions on bacterial community distribution of three continuous operated poly(butylene succinate) biological denitrification reactors used for recirculating aquaculture system (RAS) wastewater treatment. The results indicated that salinity decreased OTU numbers and diversity while dissolved oxygen (DO) had no obvious influence on OTU numbers. Significant microbial community composition differences were observed among and between three denitrification reactors under varied operation conditions. This result was also demonstrated by cluster analysis (CA) and detrended correspondence analysis (DCA). Hierarchical clustering and redundancy analysis (RDA) was performed to test the relationship between environmental factors and bacterial community compositions and result indicated that salinity, DO and hydraulic retention time (HRT) were the three key factors in microbial community formation. Besides, Simplicispira was detected under all operational conditions, which worth drawing more attention for nitrate removal. Moreover, the abundance of nosZ gene and 16S rRNA were analyzed by real-time PCR, which suggested that salinity decreased the proportion of denitrifiers among whole bacterial community while DO had little influence on marine reactors. This study provides an overview of microbial community shift dynamics in solid-phase denitrification reactors when operation parameters changed and proved the feasibility to apply interval aeration for denitrification process based on microbial level, which may shed light on improving the performance of RAS treatment units.Electronic supplementary materialThe online version of this article (doi:10.1186/s13568-017-0412-3) contains supplementary material, which is available to authorized users.

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Section: Discussionsupporting

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The impact of DO and salinity on microbial community in poly(butylene succinate) denitrification reactors for recirculating aquaculture system wastewater treatment

et al. 2017

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Nitrification and aerobic denitrification in solid phase denitrification systems with various biodegradable carriers for ammonium‐contaminated water purification

Feng

Zhu

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: Solid phase denitrification (SPD) has achieved efficient performance mostly under anoxic conditions for nitrate reduction, while it has few applications in achieving simultaneous nitrification and denitrification (SND) for ammonium nitrogen (NH 4 + -N)-rich water treatment. This study attempted to develop aerobic SPD systems with three alkali-pretreated biodegradable carriers (rice husk, pomelo peel and durian peel). RESULTS:The three carriers all achieved much higher average nitrogen removal rates (0.56-0.68 mg NH 4 + -N L −1 h −1 , 0.06-0.50 mg total nitrogen (TN) L −1 h −1 ) than those of the control reactor without carriers (0.18 mg NH 4 + -N L −1 h −1 , <0.01 mg TN L −1 h −1 ) at a dissolved oxygen (DO) concentration of 2.5 mg L −1 , and no decline in SND efficiency occurred when the DO level increased to 7.5 mg L −1 . However, the aerobic denitrification efficiency was reduced with declining organic availability of the biodegradable carrier. Durian peel carrier exhibited the most efficient TN removal performance and the longest efficiently stable stage owing to its higher carbon content, and a lower DO concentration of 2.5 mg L −1 was helpful for achieving a longer efficiently stable stage. There were significant differences in the dominant bacteria attached to the three biofilm carriers. Meanwhile, higher enrichment of nirS-type than nirK-type denitrifier diversity was found, especially at a higher DO level, and 18 new aerobic denitrifiers were identified. CONCLUSION: The aerobic SPD system could achieve efficient nitrification and denitrification, which was strongly affected by the organic availability of the biodegradable carrier. Therefore, aerobic SPD could be considered as an attractive technology for nitrogen removal in ammonium-rich water and wastewater.

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Bacterial communities fluctuate in abundance and diversity under simulated oil-contaminated seawater conditions

You

Liang³

et al. 2018

J. Ocean. Limnol.

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Simultaneous ammonia and nitrate removal in an airlift reactor using poly(butylene succinate) as carbon source and biofilm carrier

Cited by 89 publications

References 33 publications

The impact of DO and salinity on microbial community in poly(butylene succinate) denitrification reactors for recirculating aquaculture system wastewater treatment

The impact of DO and salinity on microbial community in poly(butylene succinate) denitrification reactors for recirculating aquaculture system wastewater treatment

Nitrification and aerobic denitrification in solid phase denitrification systems with various biodegradable carriers for ammonium‐contaminated water purification

Bacterial communities fluctuate in abundance and diversity under simulated oil-contaminated seawater conditions

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