High-rate nitrogen removal by the Anammox process at ambient temperature

Yang, Jiachun; Zhang, Li; Hira, Daisuke; Fukuzaki, Yasuhiro; Furukawa, Koichi

doi:10.1016/j.biortech.2010.08.039

Cited by 28 publications

(8 citation statements)

References 19 publications

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“…(1) high-quality sludge retention can provide sufficient biomass accumulation (Van Hulle et al 2010;Vazquez-Padin et al 2010b), (2) microbial communities should be aggregated as granular sludge or biofilms to avoid the negative impact factor such as DO, and (3) anammox bacteria should be kept away from substrate inhibition, especially nitrite (Lotti et al 2012;Tang et al 2011;Yang et al 2011). Compared to flocculent biomass, biofilm is much more resistant to nitrite (Fernández et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Anammox start-up in sequencing batch biofilm reactors using different inoculating sludge

Yang

Gao

2012

Appl Microbiol Biotechnol

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In this study, anammox bacteria were rapidly enriched in sequencing batch biofilm reactors (SBBRs) with different inoculations. The activated sludge taken from a sequencing batch reactor was used and inoculated to SBBR1, while SBBR2 was seeded with stored anaerobic sludge from an upflow anaerobic fixed bed (2-year stored at 5-15 °C). Nitrogen removal performance, anammox activity, biofilm characteristics and variation of the microbial community were evaluated. The maximum total nitrogen loading rate (NLR) of SBBR1 gradually reached to 1.62 kgN/(m³/day) with a removal efficiency higher than 88% and the NLR of SBBR2 reached to 1.43 kgN/(m³/day) with a removal efficiency of 86%. SBBR2 was more stable compared to SBBR1. These results, combined with molecular techniques such as scanning electron microscope, fluorescence in situ hybridization, and terminal restriction fragment length polymorphism, indicated that different genera of anammox bacteria became dominant. This research also demonstrates that SBBR is a promising bioreactor for starting up and enriching anammox bacteria.

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Section: Introductionmentioning

confidence: 99%

Anammox start-up in sequencing batch biofilm reactors using different inoculating sludge

Yang

Gao

2012

Appl Microbiol Biotechnol

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“…Studies have shown that when the HCO 3 − concentration increased from 150 mg L −1 to 1500 mg L −1 , the TN removal efficiency increased to twice the initial value, 34 and the highest TN removal rate was 66.4 g N (m 3 d) −1 . 35 After the HCO 3 − concentration was further increased to 2000 mg L −1 , the TN removal rate dropped to 50% within 5 d, and the effluent TN concentration increased to 650 mg L −1 , which was lower than the inhibition level (75%) in other studies.…”

Section: Resultsmentioning

confidence: 99%

Comparison between two anammox fiber fillers under load impact and the effect of HCO₃⁻ concentration

et al. 2022

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“…PCR-DGGE uses a GC-clamp primer (GC-clamp added to the 5´terminus of the forward primer) for amplification prior to gel electrophoresis. DGGE was used in previous studies of anammox samples (i) to detect key microorganisms that contributed to the loss of ammonium and nitrite in batch assay [64], (ii) to analyse bacterial population in the biofilm of the UASB reactor [39] and (iii) to study the microbial population in the anammox reactor [65]. DGGE has been commonly chosen to define phylogenetic relationships among bacteria because the technique can supply precise and abundant information concerning genetic diversity by separating different base-pair sequences (approximately 200-700 base pairs) [66].…”

Section: Denaturing Gradient Gel Electrophoresis (Dgge)mentioning

confidence: 99%

Enrichment of anaerobic ammonium oxidation (anammox) bacteria for short start-up of the anammox process: a review

Ibrahim

Yusof

Yusoff

et al. 2016

Desalination and Water Treatment

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A B S T R A C TThe application of the anaerobic ammonium oxidation (anammox) reaction in a biological nitrogen removal system to treat wastewater has become of great interest since its discovery. The anammox reaction is performed by anammox bacteria that belong to the Planctomycete phylum. The reaction occurs in the presence of ammonium using nitrite as the substrate under anaerobic conditions. However, the bacteria have an extremely slow growth rate and stringent metabolic conditions that cause difficulty in culturing and applying the system for wastewater treatment. Anammox enrichment has a long start-up period for the anammox process that hinders researchers using laboratory and full-scale systems for the first time. Many attempts have been made to culture anammox to establish a successful anammox culture with a shorter start-up period for the anammox reaction and high nitrogen removal activity. This paper reviews previous studies on anammox enrichment with emphasis on (i) inoculum selection, (ii) enrichment techniques and (iii) factors influencing anammox enrichment. This review will assist researchers in planning and designing an appropriate anammox enrichment. The findings should widen the application of anammox in biological nitrogen removal systems for nitrogenous wastewater.

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High-rate nitrogen removal by the Anammox process at ambient temperature

Cited by 28 publications

References 19 publications

Anammox start-up in sequencing batch biofilm reactors using different inoculating sludge

Anammox start-up in sequencing batch biofilm reactors using different inoculating sludge

Comparison between two anammox fiber fillers under load impact and the effect of HCO₃⁻ concentration

Enrichment of anaerobic ammonium oxidation (anammox) bacteria for short start-up of the anammox process: a review

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High-rate nitrogen removal by the Anammox process at ambient temperature

Cited by 28 publications

References 19 publications

Anammox start-up in sequencing batch biofilm reactors using different inoculating sludge

Anammox start-up in sequencing batch biofilm reactors using different inoculating sludge

Comparison between two anammox fiber fillers under load impact and the effect of HCO3− concentration

Enrichment of anaerobic ammonium oxidation (anammox) bacteria for short start-up of the anammox process: a review

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Comparison between two anammox fiber fillers under load impact and the effect of HCO₃⁻ concentration