Nitrification and denitrifying phosphorus removal in an upright continuous flow reactor

Reza, Maryam; Cuenca, Manuel Alvarez

doi:10.2166/wst.2016.057

Cited by 10 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Next, at the class level, Betaproteobacteria and Gammaproteobacteria increased from 17.85% and 12.88% at phase I to 27.22% and 15.89% at phase III, respectively. Betaproteobacteria and Gammaprotebacteria were found to be capable of nitrate and nitrite reduction, and especially, Gammaprotebacteria also played a significant part in denitrification and phosphorus removal reactors . In the systems that DPAOs used nitrate as electron accepter, Flavobacteria has been found to be more abundant than other systems and was the class with the ability to consume glucose .…”

Section: Resultsmentioning

confidence: 72%

Simultaneous nitrogen and phosphorus removal by combined anammox and denitrifying phosphorus removal process

Zhang

Qiao

Shao³

et al. 2017

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND: Single-stage nitrogen removal using anammox and partial nitrification process (SNAP process) is a promising process to treat low C/N wastewater relying on ammonia-oxidizing bacteria (AOB) and anaerobic ammonium oxidation (anammox) bacteria. However, excess nitrate (NO 3 − ) in effluent is a common problem for the SNAP process. The denitrifying phosphorus removal (DPAO) process using NO 3 − as electron acceptor was adopted to reduce nitrate in effluent from the SNAP process, while phosphorus removal was also achieved simultaneously. Thus, a novel combined process (DPAO-SNAP process) was established to achieve nitrogen and phosphorus removal simultaneously.

show abstract

Section: Resultsmentioning

confidence: 72%

Simultaneous nitrogen and phosphorus removal by combined anammox and denitrifying phosphorus removal process

Zhang

Qiao

Shao³

et al. 2017

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

“…Xia et al ( 2008 ) reported that members of the genus uncultured Saprospiraceae played an important role in protein degradation by the production of extracellular enzymes. Reza and Alvarez ( 2016 ) and Silva et al ( 2017 ) revealed that unknown bacteria of Saprospiraceae may have been responsible for the successful nutrient removal. Lentimicrobium was strictly anaerobic short bacillus, which can also metabolize glucose and other small molecular organic matter (Sun et al 2016 ).…”

Section: Discussionmentioning

confidence: 99%

Bacterial communities in paddy soil and ditch sediment under rice-crab co-culture system

Jiang

Zhao

et al. 2021

AMB Expr

View full text Add to dashboard Cite

As an important form of sustainable agriculture, rice-crab (Eriocheir sinensis) co-culture is rapid developing worldwide. However, the knowledge on the bacterial communities of the different components of the system is limited. In this study, we investigated the bacterial community structure in paddy soil and ditch sediment by using high-throughput sequencing technology. The results showed that compared with the ditch sediment, the content of NH4+-N in paddy soil decreased by 62.31%, and the content of AP (available phosphorus) increased by 172.02% (P < 0.05). The most abundant phyla in paddy soil and ditch sediment were Proteobacteria, Bacteroidetes and Chloroflexi, whose relative abundance was above 65%. Among the dominant genera, the relative abundance of an uncultured bacterium genus of Saprospiraceae and an uncultured bacterium genus of Lentimicrobiaceae in paddy soil was significantly lower than ditch sediment (P < 0.05). Alpha diversity indicated that the bacterial diversity of paddy soil and ditch sediment was similar. The bacterial community structure was affected by the relative abundance of bacteria, not the species of bacteria. Redundancy analysis (RDA) showed that the bacterial communities in paddy soil and ditch sediment were correlated with physicochemical properties. Our findings showed that the bacterial community structure was distinct in paddy soil and ditch sediment under rice-crab co-culture probably due to their different management patterns. These results can provide theoretical support for improving rice-crab co-culture technology.

show abstract

“…However, most nitrifiers are autotrophs and do not rely on organic carbon for growth. On the other hand, Reza and Alvarez Cuenca 58 suggested that members of the family Saprospiraceae could also be directly involved with the nitrification processes.…”

Section: Discussionmentioning

confidence: 99%

Composition and Dynamics of the Activated Sludge Microbiome during Seasonal Nitrification Failure

Johnston

LaPara

Behrens

2019

Sci Rep

View full text Add to dashboard Cite

Wastewater treatment plants in temperate climate zones frequently undergo seasonal nitrification failure in the winter month yet maintain removal efficiency for other contaminants. We tested the hypothesis that nitrification failure can be correlated to shifts in the nitrifying microbial community. We monitored three parallel, full-scale sequencing batch reactors over the course of a year with respect to reactor performance, microbial community composition via 16S rRNA gene amplicon sequencing, and functional gene abundance using qPCR. All reactors demonstrated similar changes to their core microbiome, and only subtle variations among seasonal and transient taxa. We observed a decrease in species richness during the winter, with a slow recovery of the activated sludge community during spring. Despite the change in nitrification performance, ammonia monooxygenase gene abundances remained constant throughout the year, as did the relative sequence abundance of Nitrosomonadacae. This suggests that nitrification failure at colder temperatures might result from different reaction kinetics of nitrifying taxa, or that other organisms with strong seasonal shifts in population abundance, e.g. an uncultured lineage of Saprospiraceae, affect plant performance in the winter. This research is a comprehensive analysis of the seasonal microbial community dynamics in triplicate full-scale sequencing batch reactors and ultimately strengthens our basic understanding of the microbial ecology of activated sludge communities by revealing seasonal succession patterns of individual taxa that correlate with nutrient removal efficiency.

show abstract

Nitrification and denitrifying phosphorus removal in an upright continuous flow reactor

Cited by 10 publications

References 14 publications

Simultaneous nitrogen and phosphorus removal by combined anammox and denitrifying phosphorus removal process

Simultaneous nitrogen and phosphorus removal by combined anammox and denitrifying phosphorus removal process

Bacterial communities in paddy soil and ditch sediment under rice-crab co-culture system

Composition and Dynamics of the Activated Sludge Microbiome during Seasonal Nitrification Failure

Contact Info

Product

Resources

About