COD removal and nitrification of low-strength domestic wastewater in aerobic granular sludge sequencing batch reactors
COD removal and nitrification of low-strength domestic wastewater in aerobic granular sludge sequencing batch reactors
Acetate-fed granules were used to start-up reactors for the treatment of low-strength domestic wastewater at 25 °C (R1) and 35 °C (R2). Two hundred milligrams per liter COD in domestic wastewater was easily removed. Granular seeds acclimated to NH4+-N removal after domestic wastewater was used and the specific NH4+-N removal rate increased linely after 7-day operation. Effluent NH4+-N was below 5 mg l?1 and NH4+-N removal efficiency increased to above 90% after 22-day operation with cycle time of 2 h in both reactors with 0.3 kg m?3 day?1 NH4+-N loading rate. In addition, granular seeds cultivated at 25 °C showed good adaptation to higher temperature and the granules in R2 at 35 °C showed good stability in 4-month operation.
low-strength domestic wastewater, aerobic granules, sequencing batch reactor, nitrification, COD removal, temperature
23-28
Liu, Yong-Qiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
Moy, Benjamin Yan-Pui
b148c1e1-9db1-4580-83e8-6a17999dfd92
Tay, Joo-Hwa
1bd3ce87-355e-460f-835b-56cb81f3a1b0
December 2007
Liu, Yong-Qiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
Moy, Benjamin Yan-Pui
b148c1e1-9db1-4580-83e8-6a17999dfd92
Tay, Joo-Hwa
1bd3ce87-355e-460f-835b-56cb81f3a1b0
Liu, Yong-Qiang, Moy, Benjamin Yan-Pui and Tay, Joo-Hwa
(2007)
COD removal and nitrification of low-strength domestic wastewater in aerobic granular sludge sequencing batch reactors.
Enzyme and Microbial Technology, 42 (1), .
(doi:10.1016/j.enzmictec.2007.07.020).
Abstract
Acetate-fed granules were used to start-up reactors for the treatment of low-strength domestic wastewater at 25 °C (R1) and 35 °C (R2). Two hundred milligrams per liter COD in domestic wastewater was easily removed. Granular seeds acclimated to NH4+-N removal after domestic wastewater was used and the specific NH4+-N removal rate increased linely after 7-day operation. Effluent NH4+-N was below 5 mg l?1 and NH4+-N removal efficiency increased to above 90% after 22-day operation with cycle time of 2 h in both reactors with 0.3 kg m?3 day?1 NH4+-N loading rate. In addition, granular seeds cultivated at 25 °C showed good adaptation to higher temperature and the granules in R2 at 35 °C showed good stability in 4-month operation.
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Published date: December 2007
Keywords:
low-strength domestic wastewater, aerobic granules, sequencing batch reactor, nitrification, COD removal, temperature
Organisations:
Water & Environmental Engineering Group
Identifiers
Local EPrints ID: 352827
URI: http://eprints.soton.ac.uk/id/eprint/352827
ISSN: 0141-0229
PURE UUID: a750a9e5-d9f5-40ec-a0c7-81a426e94956
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Date deposited: 17 Jun 2013 13:44
Last modified: 15 Mar 2024 03:47
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Author:
Benjamin Yan-Pui Moy
Author:
Joo-Hwa Tay
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