Abstract：
:The performances of anaerobic-anoxic-oxic processes with (A2O-B) and without (A2O-C) beneficial microorganisms were compared to provide valuable insights on how they are affected by changes in the microbial biomass and community composition. Although the A2O-B process showed lower concentrations of mixed liquor suspended solids and mixed liquor volatile suspended solids than the A2O-C process under identical operating conditions, the A2O-B process was more effective for the removal of organic materials and nutrients compared with the A2O-C process. Furthermore, the compressibility and settleability of the activated sludge were significantly better in the A2O-B process than in the A2O-C process due to the enhanced decomposition of extracellular polymeric substances. These results indicated that the inoculation of beneficial microorganisms may increase the proportions of microorganisms in relation to the removal of organic materials, nutrients (i.e., Zoogloea, Dechloromonas, Nitrospira, and Nitrosomonas) and the reduction of the excess sludge (i.e., Proteobacteria and Bacteroidetes).
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Wang J,Chon K,Ren X,Kou Y,Chae KJ,Piao Ydoi
10.1016/j.biortech.2019.02.047subject
Has Abstractpub_date
2019-06-01 00:00:00pages
90-98eissn
0960-8524issn
1873-2976pii
S0960-8524(19)30247-0journal_volume
281pub_type
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