Performance of aerobic granular sludge at variable circulation rate in anaerobic–aerobic conditions
Aerobic granular sludge (AGS) has been applied to treat a broad range of industrial and municipal wastewater. AGS can be developed in a sequencing batch reactor (SBR) with alternating anaerobic– aerobic conditions. To provide anaerobic conditions, the mixed liquor is allowed to circulate in the reac...
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| Format: | Article |
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IWA Publishing
2014
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| Online Access: | http://eprints.uthm.edu.my/6034/ |
| _version_ | 1848888694953476096 |
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| author | Harun, Hasnida Nor Anuar, Aznah Ujang, Zaini Rosman, Noor Hasyimah Othman, Inawati |
| author_facet | Harun, Hasnida Nor Anuar, Aznah Ujang, Zaini Rosman, Noor Hasyimah Othman, Inawati |
| author_sort | Harun, Hasnida |
| building | UTHM Institutional Repository |
| collection | Online Access |
| description | Aerobic granular sludge (AGS) has been applied to treat a broad range of industrial and municipal wastewater. AGS can be developed in a sequencing batch reactor (SBR) with alternating anaerobic– aerobic conditions. To provide anaerobic conditions, the mixed liquor is allowed to circulate in the reactor without air supply. The circulation flow rate of mixed liquor in anaerobic condition is the most important parameter of operation in the anaerobic-AGS processes. Therefore, this study investigates the effect of circulation rate on the performance of the SBR with AGS. Two identical reactors namely R1 and R2 were operated using fermented soy sauce wastewater at circulation rate of 14.4 and 36.0 l/h, respectively. During the anaerobic conditions, the wastewater was pumped out from the upper part of the reactor and circulated back into the bottom of the reactor for 230 min. A compact and dense AGS was observed in both reactors with a similar diameter of 2.0 mm in average, although different circulation rates were adopted. The best reactor performance was achieved in R2 with chemical oxygen demand removal rate of 89%, 90% total phosphorus removal, 79% ammonia removal, 10.1 g/l of mixed liquor suspended solids and a sludge volume index of 25 ml/g. |
| first_indexed | 2025-11-15T20:14:22Z |
| format | Article |
| id | uthm-6034 |
| institution | Universiti Tun Hussein Onn Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T20:14:22Z |
| publishDate | 2014 |
| publisher | IWA Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uthm-60342022-01-26T02:43:47Z http://eprints.uthm.edu.my/6034/ Performance of aerobic granular sludge at variable circulation rate in anaerobic–aerobic conditions Harun, Hasnida Nor Anuar, Aznah Ujang, Zaini Rosman, Noor Hasyimah Othman, Inawati TA170-171 Environmental engineering Aerobic granular sludge (AGS) has been applied to treat a broad range of industrial and municipal wastewater. AGS can be developed in a sequencing batch reactor (SBR) with alternating anaerobic– aerobic conditions. To provide anaerobic conditions, the mixed liquor is allowed to circulate in the reactor without air supply. The circulation flow rate of mixed liquor in anaerobic condition is the most important parameter of operation in the anaerobic-AGS processes. Therefore, this study investigates the effect of circulation rate on the performance of the SBR with AGS. Two identical reactors namely R1 and R2 were operated using fermented soy sauce wastewater at circulation rate of 14.4 and 36.0 l/h, respectively. During the anaerobic conditions, the wastewater was pumped out from the upper part of the reactor and circulated back into the bottom of the reactor for 230 min. A compact and dense AGS was observed in both reactors with a similar diameter of 2.0 mm in average, although different circulation rates were adopted. The best reactor performance was achieved in R2 with chemical oxygen demand removal rate of 89%, 90% total phosphorus removal, 79% ammonia removal, 10.1 g/l of mixed liquor suspended solids and a sludge volume index of 25 ml/g. IWA Publishing 2014 Article PeerReviewed Harun, Hasnida and Nor Anuar, Aznah and Ujang, Zaini and Rosman, Noor Hasyimah and Othman, Inawati (2014) Performance of aerobic granular sludge at variable circulation rate in anaerobic–aerobic conditions. Water Science & Technology, 69 (11). pp. 2252-2257. ISSN 2227-524X |
| spellingShingle | TA170-171 Environmental engineering Harun, Hasnida Nor Anuar, Aznah Ujang, Zaini Rosman, Noor Hasyimah Othman, Inawati Performance of aerobic granular sludge at variable circulation rate in anaerobic–aerobic conditions |
| title | Performance of aerobic granular sludge at variable circulation rate in anaerobic–aerobic conditions |
| title_full | Performance of aerobic granular sludge at variable circulation rate in anaerobic–aerobic conditions |
| title_fullStr | Performance of aerobic granular sludge at variable circulation rate in anaerobic–aerobic conditions |
| title_full_unstemmed | Performance of aerobic granular sludge at variable circulation rate in anaerobic–aerobic conditions |
| title_short | Performance of aerobic granular sludge at variable circulation rate in anaerobic–aerobic conditions |
| title_sort | performance of aerobic granular sludge at variable circulation rate in anaerobic–aerobic conditions |
| topic | TA170-171 Environmental engineering |
| url | http://eprints.uthm.edu.my/6034/ |