Characterization of aerobic granular sludge used for the treatment of petroleum wastewater. (January 2019)

• Record Type: Journal Article
• Authors: Chen, Chunmao; Ming, Jie; Yoza, Brandon A.; Liang, Jiahao; Li, Qing X.; Guo, Hongqiao; Liu, Zhiyuan; Deng, Jingmin; Wang, Qinghong
• Is Part Of: Bioresource technology. Volume 271(2019)
• Page Start: 353
• Page End: 359
• Publication Date: 2019-01
• Subjects: Aerobic granular sludge -- Petroleum wastewater -- Microbial community -- Granulation -- Wastewater treatment; 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.2018.09.132
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Aerobic granular sludge used for the treatment of petroleum wastewater. Stable and compacted granules were formed having excellent settleability. Granular sludge can efficiently reduce COD and petroleum compounds. Nitrogen removal is enhanced by the addition of glucose. Favorable bacterial community prevailed in granular sludge. Abstract: The application of aerobic granular sludge (AGS) is a promising biological method for wastewater treatment. In the present study, the AGS method was used for the treatment of petroleum wastewater. The granulation process and organic/nitrogen compound removal efficiencies were determined and correlated with the microbiological communities. Granulation of the aerobic sludge occurred after 35 days of operation. The compacted granules had a diameter of 0.46–0.9 mm. Extracellular polymeric substances (EPS) contents increased as granulation progressed and reached 128 mg/g·VSS. The granulated sludge efficiently reduced COD by 95% and petroleum compound contents by 90%. NH4 + -N and TN removal were inefficient due to the inhibition of nitrobacteria and denitrificans, but were significantly improved by the addition of glucose. The microorganisms in the granules capable of degrading petroleum chemicals consisted of the genera Propioniciclava, Micropruina, Alphaproteobacteria, Flavobacterium, and Sulfuritalea .