Recovery of Stored Aerobic Granular Sludge and Its Contaminants Removal Efficiency under Different Operation Conditions
Joint Authors
Zhao, Zhiwei
Wang, Shuo
Shi, Wenxin
Li, Ji
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-11
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The quick recovery process of contaminants removal of aerobic granular sludge (AGS) is complex, and the influencing factors are still not clear.
The effects of dissolved oxygen (DO, air intensive aeration rate), organic loading rate (OLR), and C/N on contaminants removal characteristics of AGS and subsequently long-term operation of AGS bioreactor were investigated in this study.
DO had a major impact on the recovery of AGS.
The granules reactivated at air intensive aeration rate of 100 L/h achieved better settling property and contaminants removal efficiency.
Moreover, protein content in extracellular polymeric substance (EPS) was almost unchanged, which demonstrated that an aeration rate of 100 L/h was more suitable for maintaining the biomass and the structure of AGS.
Higher OLR caused polysaccharides content increase in EPS, and unstable C/N resulted in the overgrowth of filamentous bacteria, which presented worse NH4+-N and PO43−-P removal.
Correspondingly, quick recovery of contaminants removal was accomplished in 12 days at the optimized operation conditions of aeration rate 100 L/h, OLR 4 g/L·d, and C/N 100 : 10, with COD, NH4+-N, and PO43−-P removal efficiencies of 87.2%, 86.9%, and 86.5%, respectively.
The renovation of AGS could be successfully utilized as the seed sludge for the rapid start-up of AGS bioreactor.
American Psychological Association (APA)
Zhao, Zhiwei& Wang, Shuo& Shi, Wenxin& Li, Ji. 2013. Recovery of Stored Aerobic Granular Sludge and Its Contaminants Removal Efficiency under Different Operation Conditions. BioMed Research International،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-1003594
Modern Language Association (MLA)
Zhao, Zhiwei…[et al.]. Recovery of Stored Aerobic Granular Sludge and Its Contaminants Removal Efficiency under Different Operation Conditions. BioMed Research International No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-1003594
American Medical Association (AMA)
Zhao, Zhiwei& Wang, Shuo& Shi, Wenxin& Li, Ji. Recovery of Stored Aerobic Granular Sludge and Its Contaminants Removal Efficiency under Different Operation Conditions. BioMed Research International. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-1003594
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1003594