Enhancement of nitrification efficiency during sludge bulking by magnetic field under long sludge retention time
The aim of the present study is to investigate the potential of magnetic field application as an alternative approach for controlling sludge bulking due to long sludge retention time (SRT) while enhancing nitrification efficiency upon the occurrence. Two sequencing batch reactors, reactor A (SBRA, m...
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| Format: | Article |
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Springer Science and Business Media Deutschland GmbH
2020
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| _version_ | 1796865307415937024 |
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| author | Zaidi, Nur Syamimi Muda, Khalida Sohaili, Johan Liew, Wai Loan Sillanpaa, Mika |
| author_facet | Zaidi, Nur Syamimi Muda, Khalida Sohaili, Johan Liew, Wai Loan Sillanpaa, Mika |
| author_sort | Zaidi, Nur Syamimi |
| collection | ePrints |
| description | The aim of the present study is to investigate the potential of magnetic field application as an alternative approach for controlling sludge bulking due to long sludge retention time (SRT) while enhancing nitrification efficiency upon the occurrence. Two sequencing batch reactors, reactor A (SBRA, magnetic field intensity 88.0 mT) and reactor B (SBRB, control) were operated under long SRT to induce the growth of filamentous microorganisms. The effect of magnetic field on nitrification, viz. ammonia–nitrogen (NH4–N) and nitrite removal, as well as biomass properties were studied under the sludge bulking condition. Results indicated that nitrification efficiency of SBRA was consistently higher with 90% NH4–N removal and 74–81% nitrite removal, which could be credited to the enhanced biomass properties of activated sludge due to the induced magnetic field. Metabolism activity and biodegradability of aerobic bacteria were also enhanced through the application of magnetic field, even under long SRT condition. This was evidenced by the average oxygen uptake rate (OUR) in SBRA that was higher with 11.7 ± 1.2 mg/L·h compared to SBRB with 9.5 ± 0.4 mg/L·h. Occurrence of filamentous sludge bulking was likewise minimized. |
| first_indexed | 2024-03-05T20:55:00Z |
| format | Article |
| id | utm.eprints-91842 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:55:00Z |
| publishDate | 2020 |
| publisher | Springer Science and Business Media Deutschland GmbH |
| record_format | dspace |
| spelling | utm.eprints-918422021-07-28T08:48:08Z http://eprints.utm.my/91842/ Enhancement of nitrification efficiency during sludge bulking by magnetic field under long sludge retention time Zaidi, Nur Syamimi Muda, Khalida Sohaili, Johan Liew, Wai Loan Sillanpaa, Mika TA Engineering (General). Civil engineering (General) The aim of the present study is to investigate the potential of magnetic field application as an alternative approach for controlling sludge bulking due to long sludge retention time (SRT) while enhancing nitrification efficiency upon the occurrence. Two sequencing batch reactors, reactor A (SBRA, magnetic field intensity 88.0 mT) and reactor B (SBRB, control) were operated under long SRT to induce the growth of filamentous microorganisms. The effect of magnetic field on nitrification, viz. ammonia–nitrogen (NH4–N) and nitrite removal, as well as biomass properties were studied under the sludge bulking condition. Results indicated that nitrification efficiency of SBRA was consistently higher with 90% NH4–N removal and 74–81% nitrite removal, which could be credited to the enhanced biomass properties of activated sludge due to the induced magnetic field. Metabolism activity and biodegradability of aerobic bacteria were also enhanced through the application of magnetic field, even under long SRT condition. This was evidenced by the average oxygen uptake rate (OUR) in SBRA that was higher with 11.7 ± 1.2 mg/L·h compared to SBRB with 9.5 ± 0.4 mg/L·h. Occurrence of filamentous sludge bulking was likewise minimized. Springer Science and Business Media Deutschland GmbH 2020-09-01 Article PeerReviewed Zaidi, Nur Syamimi and Muda, Khalida and Sohaili, Johan and Liew, Wai Loan and Sillanpaa, Mika (2020) Enhancement of nitrification efficiency during sludge bulking by magnetic field under long sludge retention time. 3 Biotech, 10 (9). ISSN 2190-572X http://dx.doi.org/10.1007/s13205-020-02398-9 DOI:10.1007/s13205-020-02398-9 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Zaidi, Nur Syamimi Muda, Khalida Sohaili, Johan Liew, Wai Loan Sillanpaa, Mika Enhancement of nitrification efficiency during sludge bulking by magnetic field under long sludge retention time |
| title | Enhancement of nitrification efficiency during sludge bulking by magnetic field under long sludge retention time |
| title_full | Enhancement of nitrification efficiency during sludge bulking by magnetic field under long sludge retention time |
| title_fullStr | Enhancement of nitrification efficiency during sludge bulking by magnetic field under long sludge retention time |
| title_full_unstemmed | Enhancement of nitrification efficiency during sludge bulking by magnetic field under long sludge retention time |
| title_short | Enhancement of nitrification efficiency during sludge bulking by magnetic field under long sludge retention time |
| title_sort | enhancement of nitrification efficiency during sludge bulking by magnetic field under long sludge retention time |
| topic | TA Engineering (General). Civil engineering (General) |
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