Salinity-driven heterogeneity toward anammox distribution and growth kinetics

Wu, Zhuoying; Meng, Han; Huang, Xiaowu; Wang, Qian; Chen, Wen‐Hsing; Gu, Ji‐Dong; Lee, Po‐Heng

doi:10.1007/s00253-018-9521-4

Cited by 24 publications

(9 citation statements)

References 31 publications

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“…Brocadia, the relative abundance of anammox cluster OTU00072, similar to Ca. Kuenenia, decreased with the increasing portioned of seawater, which agrees with the finding by Wu et al (2019). Additionally, it should be pointed out that no Ca.…”

Section: Anammox and Nitrifying Bacteriasupporting

confidence: 91%

“…The recovery time was longer than the results from Ma et al (2012). The relative abundance of anammox bacteria and each corresponding saline adaptivity may affect the recovery time, since each anammox bacterium responses differently both in the salinity shock period followed by the adaptation one (Tang et al 2011;Wu et al 2019). While the seawater addition feed (20%) was first introduced, the relative abundance of anammox bacteria was only 4.91% with no acclimation to saline condition previously, resulting in its weak response to salinity.…”

Section: Discussionmentioning

confidence: 82%

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Evolution of microbial dynamics with the introduction of real seawater portions in a low-strength feeding anammox process

Wang

Lee

2020

Appl Microbiol Biotechnol

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The salinity effect on anammox bacteria has been widely reported; however, rare studies describe the microbial dynamics of anammox-based process response to the introduction of real seawater at mainstream conditions. In this study, an anammox process at mainstream conditions without pre-enriching anammox bacteria was shifted to the feeds of a synthetic wastewater with a portion of seawater mixture. It achieved over 0.180 kg-N/(m 3 day) of nitrogen removal rate with an additional seawater proportion of 20% in the influent. The bacterial biodiversity was significantly increased with the increase of seawater proportions. High relative abundance of anammox bacteria (34.24-39.92%) related to Ca. Brocadia was enriched and acclimated to the saline environment. However, the introduction of seawater caused the enrichment of nitrite-oxidizing Ca. Nitrospira, which was responsible for the deterioration of nitrogen removal efficiency. Possible adaptation metabolisms in anammox bacteria and other nitrogen transforming bacteria are discussed. These results highlight the importance of microbial diversity for anammox process under the saline environments of 20% and 40% seawater composition.

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Section: Anammox and Nitrifying Bacteriasupporting

confidence: 91%

Section: Discussionmentioning

confidence: 82%

Evolution of microbial dynamics with the introduction of real seawater portions in a low-strength feeding anammox process

Wang

Lee

2020

Appl Microbiol Biotechnol

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“…Candidatus Scalindua was identified as the dominant AMX genus in the S-CSTR (Figure 6). Candidatus Scalindua has been previously described in nonengineered ecosystems or saltwater deammonification systems [40]. Dewatering liquors from conventional AD and THP/AD have a high salt of content 5000-6000 µS cm −1 [41,42].…”

Section: Biomass Retentionmentioning

confidence: 99%

Evaluation of a Full-Scale Suspended Sludge Deammonification Technology Coupled with an Hydrocyclone to Treat Thermal Hydrolysis Dewatering Liquors

et al. 2021

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Suspended sludge deammonification technologies are frequently applied for sidestream ammonia removal from dewatering liquors resulting from a thermal hydrolysis anaerobic digestion (THP/AD) process. This study aimed at optimizing the operation, evaluate the performance and stability of a full-scale suspended sludge continuous stirred tank reactor (S-CSTR) with a hydrocyclone for anaerobic ammonia oxidizing bacteria (AMX) biomass separation. The S-CSTR operated at a range of nitrogen loading rates of 0.08–0.39 kg N m−3 d−1 displaying nitrogen removal efficiencies of 75–89%. The hydrocyclone was responsible for retaining 56–83% of the AMX biomass and the washout of ammonia oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) was two times greater than AMX. The solid retention time (SRT) impacted on NOB washout, that ranged from 0.02–0.07 d−1. Additionally, it was demonstrated that an SRT of 11–13 d was adequate to wash-out NOB. Microbiome analysis revealed a higher AMX abundance (Candidatus scalindua) in the reactor through the action of the hydrocyclone. Overall, this study established the optimal operational envelope for deammonification from THP/AD dewatering liquors and the role of the hydrocyclone towards maintaining AMX in the S-CSTR and hence obtain process stability.

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“…For example, Jeong et al [18] found that salinity could induce the overgrowth of heterotrophic bacteria during the autotrophic nitrogen removal process, which could cause the failure of anammox systems. Wu et al [19] found that AnAOB diversity might significantly change because of the discrepancy in their salinity-driven growth kinetics. Lu et al [20] found that increased salinity (greater than 160 mmol l −1 ) resulted in a shift from Candidatus kuenenia to unclassified Brocadiaceae as the dominant AnAOB genus.…”

Section: Introductionmentioning

confidence: 99%

“…Wu et al . [ 19 ] found that AnAOB diversity might significantly change because of the discrepancy in their salinity-driven growth kinetics. Lu et al .…”

Section: Introductionmentioning

confidence: 99%

Effects of salinity on the simultaneous anammox and denitrification process: performance, sludge morphology and shifts in microbial communities

Wang

Peng

et al. 2021

R. Soc. open sci.

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In this study, the long-term effects of different salinities on the performance, sludge morphology and shifts in microbial communities were studied in a simultaneous anammox and denitrification (SAD) process at a C/N ratio of 0.5. Stable nitrogen removal efficiencies of 86.96 and 84.58% and nitrogen removal rates of 0.95 and 0.93 kg (m 3 d) −1 could be achieved under low (25 mmol l −1 ) and moderate (50 mmol l −1 ) salinity, respectively. However, the performance collapsed when the system was exposed to high salinity (100 mmol l −1 ). The content of extracellular polymeric substances increased as salinity increased, which resulted in larger sizes of granular sludge under low and moderate salinities. Nevertheless, high salinity shock disintegrated granular sludge, thereby decreasing the average granule size. The Illumina-Miseq sequencing results revealed that Candidatus Jettenia was the sole salinity-tolerant AnAOB genus during the entire operation, whereas the main denitrification bacterial genera shifted from Denitrisoma under low salinity to Denitrisoma , Thauera and Ignavibacterium under high salinity. The results of this study provide a comprehensive and practical evaluation of the SAD process for organic nitrogen-rich saline wastewater treatment.

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Salinity-driven heterogeneity toward anammox distribution and growth kinetics

Cited by 24 publications

References 31 publications

Evolution of microbial dynamics with the introduction of real seawater portions in a low-strength feeding anammox process

Evolution of microbial dynamics with the introduction of real seawater portions in a low-strength feeding anammox process

Evaluation of a Full-Scale Suspended Sludge Deammonification Technology Coupled with an Hydrocyclone to Treat Thermal Hydrolysis Dewatering Liquors

Effects of salinity on the simultaneous anammox and denitrification process: performance, sludge morphology and shifts in microbial communities

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