TY - JOUR
T1 - Nitrogen and phosphorus removal using fluidized-carriers in a full-scale A2O biofilm system
AU - Xiao, Keke
AU - Zhou, Lu
AU - He, Beiping
AU - Qian, Liang
AU - Wan, Shuo
AU - Qu, Liping
N1 - Publisher Copyright:
© 2016
PY - 2016/11/15
Y1 - 2016/11/15
N2 - A full-scale biofilm system using fluidized-carriers integrated with anaerobic-anoxic–aerobic process (treatment capacity of 3.75 × 105 m3 d−1) was used for municipal wastewater treatment. The results indicated relatively higher removal efficiencies of 86% total nitrogen (TN), 97% ammonium (NH4-N) and 97% total phosphorus (TP) were achieved, with 0.32 mg L−1 TP, 0.81 mg L−1 NH4-N and 8.07 mg L−1 TN in the effluent, which meet the Class A of Discharge standard of pollutants for municipal wastewater treatment plant (GB18918-2002) of China. Microbial results indicated the dominant microorganisms in the suspended sludge were Proteobacteria and Bacteroidetes at phylum level and β-Proteobacter at class level. The dominant microorganism in the biofilm was Proteobacteria at phylum level, with γ-Proteobacter (17.5%), β-Proteobacter (14%) and δ-Proteobacter (13.08%) distributed at class levels. The presence of Proteobacteria and Bacteroidetes in this system may be related with the phosphorus removal. A reddish color biofilm was formed on the surface of fluidized-carriers in the anaerobic tank and showed specific anammox ability, this may be related with the dominance of 0.0278% Planctomycetaceae at family level and 0.0278% Planctomycetales at order level. Besides the denitrification effects, the possible anammox bacteria present in the anaerobic tank might have also contributed to high nitrogen removal efficiency.
AB - A full-scale biofilm system using fluidized-carriers integrated with anaerobic-anoxic–aerobic process (treatment capacity of 3.75 × 105 m3 d−1) was used for municipal wastewater treatment. The results indicated relatively higher removal efficiencies of 86% total nitrogen (TN), 97% ammonium (NH4-N) and 97% total phosphorus (TP) were achieved, with 0.32 mg L−1 TP, 0.81 mg L−1 NH4-N and 8.07 mg L−1 TN in the effluent, which meet the Class A of Discharge standard of pollutants for municipal wastewater treatment plant (GB18918-2002) of China. Microbial results indicated the dominant microorganisms in the suspended sludge were Proteobacteria and Bacteroidetes at phylum level and β-Proteobacter at class level. The dominant microorganism in the biofilm was Proteobacteria at phylum level, with γ-Proteobacter (17.5%), β-Proteobacter (14%) and δ-Proteobacter (13.08%) distributed at class levels. The presence of Proteobacteria and Bacteroidetes in this system may be related with the phosphorus removal. A reddish color biofilm was formed on the surface of fluidized-carriers in the anaerobic tank and showed specific anammox ability, this may be related with the dominance of 0.0278% Planctomycetaceae at family level and 0.0278% Planctomycetales at order level. Besides the denitrification effects, the possible anammox bacteria present in the anaerobic tank might have also contributed to high nitrogen removal efficiency.
KW - Anaerobic-anoxic-aerobic process
KW - Biofilm system with fluidized-carriers
KW - Biological phosphorus and nitrogen removal
KW - Full-scale
KW - Microbial community
KW - Miseq illumina sequencing
UR - http://www.scopus.com/inward/record.url?scp=84990043383&partnerID=8YFLogxK
U2 - 10.1016/j.bej.2016.08.004
DO - 10.1016/j.bej.2016.08.004
M3 - 文章
AN - SCOPUS:84990043383
SN - 1369-703X
VL - 115
SP - 47
EP - 55
JO - Biochemical Engineering Journal
JF - Biochemical Engineering Journal
ER -