Comparative study of aerobic granular sludge with different carbon sources: Effluent nitrogen forms and microbial community. (October 2021)

• Record Type: Journal Article
• Authors: Zhao, Lijian; Su, Chengyuan; Wang, Anliu; Fan, Cuiping; Huang, Xinyue; Li, Feiqian; Li, Ruting
• Is Part Of: Journal of water process engineering. Volume 43(2021)
• Publication Date: 2021-10
• Subjects: Aerobic granular sludge -- Carbon source -- Nitrogen form -- KEGG -- Nitrogen metabolism; Water-supply engineering -- Periodicals; Saline water conversion -- Periodicals; Seawater -- Distillation -- Periodicals; Sanitary engineering -- Periodicals; Sewage -- Purification -- Periodicals; 627
• DOI: 10.1016/j.jwpe.2021.102211
• Languages: English
• ISSNs: 2214-7144

Abstract

Abstract: The effects of the three carbon sources glucose, sodium acetate, and sucrose on the transformation of nitrogen and phosphorous forms in an aerobic granular sludge (AGS) system were investigated. In addition, the microbial community in the sludge was analyzed. Dissolved organic nitrogen removal efficiency in the sodium acetate group remained good throughout the experimental period, with a removal rate of around 90%. The members of Paracoccus and Anaerorhabdus, could hardly use saccharides and therefore accounted for a small amount of the overall bacteria in the groups with glucose and sucrose. The proportion of membrane transport function genes was the largest in the sodium acetate group, with the value reaching to 14.05%. The gene abundance of Glycolysis in three groups were 1.12, 1.06 and 1.09%, respectively. Meanwhile, the genes nirK, norB/C, and nosZ, responsible for the conversion of nitrite to nitrogen in the sodium acetate group were higher than the glucose and sucrose groups. Gene abundance of Glycolysis was largest in the glucose group. Graphical abstract: Unlabelled Image Highlights: TN removal rate of the sodium acetate group was relatively higher. Sodium acetate could promote the growth of Proteobacteria . Gene hao, nar and nap were largest in the glucose group. Gene abundance of Glycolysis was largest in the glucose group.