Performance of a full-scale modified anaerobic/anoxic/oxic process: High-throughput sequence analysis of its microbial structures and their community functions. (November 2016)

• Record Type: Journal Article
• Authors: Chen, Yasong; Zhao, Zheng; Peng, Yuke; Li, Jie; Xiao, Lin; Yang, Liuyan
• Is Part Of: Bioresource technology. Volume 220(2016)
• Page Start: 225
• Page End: 232
• Publication Date: 2016-11
• Subjects: WWTP -- Microbial community -- Denitrification -- High-throughput sequencing -- Modified A2/O; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2016.07.095
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: A new WWTP with a modified A2/O process achieved the desired effluent quality. The modified A2/O was investigated using high-throughput sequencing analysis. Bacterial genera performing nitrogen removal were identified. Abstract: The average COD, TN, TP, and NH4 + -N elimination rates in a new wastewater treatment plant (WWTP) based on a modified A2/O process were 83%, 72.4%, 93.5%, and 98.6%, respectively, even under conditions of a low C/N ratio and low temperature. Among the four potential denitrifying units, the post-anoxic unit was the least efficient with respect to the removal efficiency. However, the structures of the bacterial community among samples obtained from the treatment units were similar, as demonstrated using Illumina Miseq high-throughput sequencing. Genera with nitrifying, denitrifying, hydrolyzing, and glycogen-accumulating activities were identified in all units, indicating that functional groups were highly enriched in the active sludges and thus enabled nitrogen removal. The key functional microorganisms responsible for nitrification-denitrification in the WWTP were species belonging to the genera Nitrospira, Hydrogenophilaceae, Comamonas, Dechloromonas, Thauera, Haliangium, and Halomonas .