Simultaneous occurrence and analysis of both anammox and n-damo bacteria in five full-scale wastewater treatment plants

TY - JOUR

T1 - Simultaneous occurrence and analysis of both anammox and n-damo bacteria in five full-scale wastewater treatment plants

AU - Meng, Han

AU - Zhang, Xiaowei

AU - Zhou, Zhichao

AU - Luo, Ling

AU - Lan, Wensheng

AU - Lin, Jih Gaw

AU - Li, Xiao Yan

AU - Gu, Ji Dong

N1 - Publisher Copyright: © 2020 Elsevier Ltd

PY - 2021/1

Y1 - 2021/1

N2 - Anaerobic ammonium oxidation (anammox) and nitrite-dependent anaerobic methane oxidation (n-damo) processes are two newly discovered biochemical pathways for removal of reactive nitrogen species and methane. An investigation was initiated to investigate the simultaneous removal of ammonium and methane and the corresponding microorganisms in a full-scale sewage treatment plant and four landfill leachate treatment plants. In this study, hzsB and pmoA genes were used to amplify the genomic DNA of these samples to reveal the diversity of anammox bacteria and n-damo bacteria in these WWTPs. Both anammox bacteria and n-damo bacteria were detected successfully in all samples. The hzsB gene-based PCR amplified sequences featured three genera of Candidatus (Ca.) Brocadia, Ca. Kuenenia and Ca. Jettenia in these WWTPs, while the pmoA gene amplification showed two species of Ca. Methylomirabilis oxyfera and Ca. Methylomirabilis sinica. It was observed that after inoculation of anammox sludge, Brocadia becomes more dominant from the initial co-existing consortium of Kuenenia and Brocadia, and the community diversity decreased accordingly. Based on quantitative 16S rRNA gene PCR, the abundance of anammox bacteria ranged from 2.64 × 106 to 1.73 × 1013 copies per gram dry sludge in the five plants, particularly high on the carriers of landfill leachate wastewaters and the abundance of n-damo bacteria ranged from 2.52 × 107 to 2.19 × 108 copies per gram dry sludge in the five plants. Results shows that abundances of anammox bacteria and AOB (ammonium oxidizing bacteria) were limited by the lower ammonium in the sewage treatment plant, but were higher corresponding to ammonium concentration. Successful inoculation of anammox bacteria was achieved in practical engineering systems and the co-occurrence of anammox bacteria and n-damo bacteria plays an important role in N and C removal in WWTPs.

AB - Anaerobic ammonium oxidation (anammox) and nitrite-dependent anaerobic methane oxidation (n-damo) processes are two newly discovered biochemical pathways for removal of reactive nitrogen species and methane. An investigation was initiated to investigate the simultaneous removal of ammonium and methane and the corresponding microorganisms in a full-scale sewage treatment plant and four landfill leachate treatment plants. In this study, hzsB and pmoA genes were used to amplify the genomic DNA of these samples to reveal the diversity of anammox bacteria and n-damo bacteria in these WWTPs. Both anammox bacteria and n-damo bacteria were detected successfully in all samples. The hzsB gene-based PCR amplified sequences featured three genera of Candidatus (Ca.) Brocadia, Ca. Kuenenia and Ca. Jettenia in these WWTPs, while the pmoA gene amplification showed two species of Ca. Methylomirabilis oxyfera and Ca. Methylomirabilis sinica. It was observed that after inoculation of anammox sludge, Brocadia becomes more dominant from the initial co-existing consortium of Kuenenia and Brocadia, and the community diversity decreased accordingly. Based on quantitative 16S rRNA gene PCR, the abundance of anammox bacteria ranged from 2.64 × 106 to 1.73 × 1013 copies per gram dry sludge in the five plants, particularly high on the carriers of landfill leachate wastewaters and the abundance of n-damo bacteria ranged from 2.52 × 107 to 2.19 × 108 copies per gram dry sludge in the five plants. Results shows that abundances of anammox bacteria and AOB (ammonium oxidizing bacteria) were limited by the lower ammonium in the sewage treatment plant, but were higher corresponding to ammonium concentration. Successful inoculation of anammox bacteria was achieved in practical engineering systems and the co-occurrence of anammox bacteria and n-damo bacteria plays an important role in N and C removal in WWTPs.

KW - Abundance

KW - Anammox bacteria

KW - Inoculation

KW - Landfill-leachate treatment plant

KW - n-damo bacteria

UR - http://www.scopus.com/inward/record.url?scp=85095459548&partnerID=8YFLogxK

U2 - 10.1016/j.ibiod.2020.105112

DO - 10.1016/j.ibiod.2020.105112

M3 - 文章

AN - SCOPUS:85095459548

SN - 0964-8305

VL - 156

JO - International Biodeterioration and Biodegradation

JF - International Biodeterioration and Biodegradation

M1 - 105112

ER -