Research advances in anammox granular sludge: A review

Adams, Mabruk; Xie, Junxiang; Kabore, Arthur wendinso Judicael; Chang, Yaofeng; Xie, Jiawei; Guo, Menglei; Chen, Chongjun

doi:10.1080/10643389.2020.1831358

Cited by 68 publications

(12 citation statements)

References 218 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fe 2+ is needed for redox reactions and electron transfer reactions in metabolic processes [ 89 ]. At the same time, an excess concentration of cations can adversely affect the anammox community, inducing the synthesis of smaller granules and even a decrease in anammox activity [ 90 , 91 ]. For example, components such as K 2 O and P 2 O 5 showed a low negative correlation with both ammonium and nitrite consumption by the indigenous anammox community ( Figure 7 ).…”

Section: Discussionmentioning

confidence: 99%

Effect of Mineral Carriers on Biofilm Formation and Nitrogen Removal Activity by an Indigenous Anammox Community from Cold Groundwater Ecosystem Alone and Bioaugmented with Biomass from a “Warm” Anammox Reactor

Vishnyakova

Popova

Artemiev

et al. 2022

Biology

View full text Add to dashboard Cite

The complex pollution of aquifers by reduced and oxidized nitrogen compounds is currently considered one of the urgent environmental problems that require non-standard solutions. This work was a laboratory-scale trial to show the feasibility of using various mineral carriers to create a permeable in situ barrier in cold (10 °C) aquifers with extremely high nitrogen pollution and inhabited by the Candidatus Scalindua-dominated indigenous anammox community. It has been established that for the removal of ammonium and nitrite in situ due to the predominant contribution of the anammox process, quartz, kaolin clays of the Kantatsky and Kamalinsky deposits, bentonite clay of the Berezovsky deposit, and zeolite of the Kholinsky deposit can be used as components of the permeable barrier. Biofouling of natural loams from a contaminated aquifer can also occur under favorable conditions. It has been suggested that the anammox activity is determined by a number of factors, including the presence of the essential trace elements in the carrier and the surface morphology. However, one of the most important factors is competition with other microbial groups that can develop on the surface of the carrier at a faster rate. For this reason, carriers with a high specific surface area and containing the necessary microelements were overgrown with the most rapidly growing microorganisms. Bioaugmentation with a “warm” anammox community from a laboratory reactor dominated by Ca. Kuenenia improved nitrogen removal rates and biofilm formation on most of the mineral carriers, including bentonite clay of the Dinozavrovoye deposit, as well as loamy rock and zeolite-containing tripoli, in addition to carriers that perform best with the indigenous anammox community. The feasibility of coupled partial denitrification–anammox and the adaptation of a “warm” anammox community to low temperatures and hazardous components contained in polluted groundwater prior to bioaugmentation should be the scope of future research to enhance the anammox process in cold, nitrate-rich aquifers.

show abstract

Section: Discussionmentioning

confidence: 99%

Effect of Mineral Carriers on Biofilm Formation and Nitrogen Removal Activity by an Indigenous Anammox Community from Cold Groundwater Ecosystem Alone and Bioaugmented with Biomass from a “Warm” Anammox Reactor

Vishnyakova

Popova

Artemiev

et al. 2022

Biology

View full text Add to dashboard Cite

show abstract

“…Among these, anammox granulation has been regarded as a particularly efficient method that has been widely applied in anammox configurations. , The numerous advantages of granules facilitate good settleability and reduce biomass loss with a slow growth rate. This also results in a high volumetric loading rate, strong resistance to adverse environmental effects, and a high settling velocity . All of these factors could effectively prevent AnAOB from being washed out from complex multispecies bacterial systems.…”

Section: Introductionmentioning

confidence: 99%

Highly Enriched Anammox Bacteria with a Novel Granulation Model Regulated by Epistylis spp. in Domestic Wastewater Treatment

Dan

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

Anammox granulation is an efficient solution proffered to enrich slow-growing anammox bacteria (AnAOB), but the lack of effective granulation strategies for low-strength domestic wastewater impedes its application. In this study, a novel granulation model regulated by Epistylis spp. for highly enriched AnAOB was revealed for the first time. Notably, anammox granulation was achieved within 65 d of domestic wastewater treatment. The stalks of Epistylis spp. were found to act as the skeleton of granules and provide attachment points for bacterial colonization, and the expanded biomass layer in turn provided more area for the unstalked free-swimming zooids. Additionally, Epistylis spp. exerted much less predation stress on AnAOB than on nitrifying bacteria, and AnAOB tended to grow in aggregates in the interior of granules, thus favoring the growth and retention of AnAOB. Ultimately, the relative abundance of AnAOB reached up to a maximum of 8.2% in granules (doubling time of 9.9 d) compared to 1.1% in flocs (doubling time of 23.1 d), representing the most substantial disparity between granules and flocs. Overall, our findings advance the current understanding of interactions involved in granulation between protozoa and microbial communities and offer new insight into the specific enrichment of AnAOB under the novel granulation model.

show abstract

“…In the recent past, there have been reviews on different low carbon nitrogen removal processes, including those covering ANAMMOX-mediated processes ( Adams et al, 2022 ), autotrophic denitrification ( Di Capua et al, 2019 ; Li et al, 2022 ), and bioelectrochemical processes ( Albina et al, 2019 ; Cecconet et al, 2020 ; Jung et al, 2020 ) among other biological processes ( Winkler and Straka, 2019 ; Abeysiriwardana-Arachchige et al, 2020 ; Mohsenpour et al, 2021 ). Despite the useful insights presented in those previous reports, many aspects of low carbon nitrogen removal processes were not adequately addressed including the process kinetics, applicability at full-scale level, actual COD consumption/g-N removed, by-product and sludge generation.…”

Section: Introductionmentioning

confidence: 99%

Biological nitrogen removal from low carbon wastewater

et al. 2022

View full text Add to dashboard Cite

Nitrogen has traditionally been removed from wastewater by nitrification and denitrification processes, in which organic carbon has been used as an electron donor during denitrification. However, some wastewaters contain low concentrations of organic carbon, which may require external organic carbon supply, increasing treatment costs. As a result, processes such as partial nitrification/anammox (anaerobic ammonium oxidation) (PN/A), autotrophic denitrification, nitritation-denitritation and bioelectrochemical processes have been studied as possible alternatives, and are thus evaluated in this study based on process kinetics, applicability at large-scale and process configuration. Oxygen demand for nitritation-denitritation and PN/A is 25% and 60% lower than for nitrification/denitrification, respectively. In addition, PN/A process does not require organic carbon supply, while its supply for nitritation-denitritation is 40% less than for nitrification/denitrification. Both PN/A and nitritation-denitritation produce less sludge compared to nitrification/denitrification, which saves on sludge handling costs. Similarly, autotrophic denitrification generates less sludge compared to heterotrophic denitrification and could save on sludge handling costs. However, autotrophic denitrification driven by metallic ions, elemental sulfur (S) and its compounds could generate harmful chemicals. On the other hand, hydrogenotrophic denitrification can remove nitrogen completely without generation of harmful chemicals, but requires specialized equipment for generation and handling of hydrogen gas (H2), which complicates process configuration. Bioelectrochemical processes are limited by low kinetics and complicated process configuration. In sum, anammox-mediated processes represent the best alternative to nitrification/denitrification for nitrogen removal in low- and high-strength wastewaters.

show abstract

Research advances in anammox granular sludge: A review

Cited by 68 publications

References 218 publications

Effect of Mineral Carriers on Biofilm Formation and Nitrogen Removal Activity by an Indigenous Anammox Community from Cold Groundwater Ecosystem Alone and Bioaugmented with Biomass from a “Warm” Anammox Reactor

Effect of Mineral Carriers on Biofilm Formation and Nitrogen Removal Activity by an Indigenous Anammox Community from Cold Groundwater Ecosystem Alone and Bioaugmented with Biomass from a “Warm” Anammox Reactor

Highly Enriched Anammox Bacteria with a Novel Granulation Model Regulated by Epistylis spp. in Domestic Wastewater Treatment

Biological nitrogen removal from low carbon wastewater

Contact Info

Product

Resources

About