LIUMin,FANGKuo,WANGKai-jun.Analysis on Microbial Community Composition of AAO+FBC/MBBR System[J].China Water & Wastewater,2023,39(19):11-18.
Analysis on Microbial Community Composition of AAO+FBC/MBBR System
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第19期
Page:
11-18
Column:
Date of publication:
2023-10-01
- Keywords:
- municipal wastewater; removal of nitrogen and phosphorus; FBC/MBBR process; community composition; metagenomic analysis
- Abstract:
- To improve the removal efficiency of nitrogen and phosphorus, the biochemical treatment of a full-scale wastewater treatment plant was renovated into improved AAO and fluidized biological carrier process (FBC/MBBR) by adding fillers to an aerobic tank. In order to investigate the composition and function of the microbial community under stable operation, metagenomic analysis was used to further analyze the samples from anoxic tank, aerobic tank filler and aerobic tank in this wastewater treatment system. Taxonomic analysis showed that the dominant bacterial phyla were Proteobacteria, Actinobacteria and Chloroflexi. The dominant polyphosphate accumulating organism (PAO) found were Accumulibacter (0.81%-0.99%), Tetrasphaera (0.35%-0.75%) and Mycobacterium (1.00%-1.54%). The relative abundance of ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) bacteria were enriched in aerobic biofilm, and the typical AOB and NOB were Nitrosomonas (2.8%) and Nitrospira (2.8%), respectively. The denitrification functional bacteria detected mainly included Dechloromonas, Flavobacterium and so on. Otherwise, various key enzymes related to nitrification, denitrification and Anammox during nitrogen removal were annotated and quantified.
Last Update:
2023-10-01