Microbial community of aerobic granules for ammonium and sulphide removal in a sequencing batch reactor
Sequencing batch reactor
Alcaligenes
Aerobic denitrification
Thiobacillus
Anammox
DOI:
10.1007/s10529-012-0857-z
Publication Date:
2012-01-27T14:02:39Z
AUTHORS (6)
ABSTRACT
Aerobic granules for sulphide and ammonium removal were cultivated in a sequencing batch reactor, and the microbial community of the aerobic granules was investigated by denaturing gradient gel electrophoresis. The loading rate increased from 0.15 to 0.9 kg S2− m−3 d−1, and the removal efficiencies of sulphide, chemical oxygen demand, and NH4 +-N were higher than 99, 80, and 98%, respectively. However, sludge settleability became poorer when the loading rate exceeded 0.3 kg S2− m−3 d−1. The denitrifying bacteria in the aerobic granules were Thauera sp., Pseudomonas alcaligenes, and uncultured planctomycetes, indicating that multiple N-removing processes occurred simultaneously in the aerobic granules. These processes could include nitrification and denitrification, aerobic denitrification, and anaerobic ammonia oxidation. Sludge settleability became poorer because of the overgrowth of uncultured Thiothrix sp.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (14)
CITATIONS (4)
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....