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Alternating anoxic/oxic condition combined with step-feeding mode for nitrogen removal in granular sequencing batch reactors (GSBRs)

Alternating anoxic/oxic condition combined with step-feeding mode for nitrogen removal in granular sequencing batch reactors (GSBRs)
Alternating anoxic/oxic condition combined with step-feeding mode for nitrogen removal in granular sequencing batch reactors (GSBRs)
Alternating anoxic/oxic condition combined with step-feeding mode (AASF) has been reported to be an efficient method for nitrogen removal in granular sequencing batch reactor by our previous work. As carbon/nitrogen (C/N) ratio is one of the key factors impacting nitrogen removal efficiency, batch experiments using granules with a mean size of 1.3 mm under AASF were carried out for nitrogen removal from synthetic wastewater with C/N ratio of 5:1 and 3:1, respectively. It was found that over 90% nitrogen efficiency could be achieved for both C/N of 5 and 3. Furthermore, over 2 months operation was maintained for treating the wastewater with C/N ratio of 5:1 to investigate the long-term stability of granules under the new operational strategy. The results showed that AASF mode in GSBR could achieve over 85% nitrogen removal efficiency with great stability for long-term stability. This indicated that alternating anoxic/oxic condition combined with step-feeding mode is an effective strategy for nitrogen removal even from wastewater with low C/N ratio in granular sequencing batch reactor
1383-5866
63-68
Chen, Fang-Yuan
d4418376-0a6b-4f9e-a95b-77101bf50889
Liu, Yong-Qiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
Tay, Joo-Hwa
1bd3ce87-355e-460f-835b-56cb81f3a1b0
Ning, Ping
fa5c5581-194f-4034-b25a-34f40dd30763
Chen, Fang-Yuan
d4418376-0a6b-4f9e-a95b-77101bf50889
Liu, Yong-Qiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
Tay, Joo-Hwa
1bd3ce87-355e-460f-835b-56cb81f3a1b0
Ning, Ping
fa5c5581-194f-4034-b25a-34f40dd30763

Chen, Fang-Yuan, Liu, Yong-Qiang, Tay, Joo-Hwa and Ning, Ping (2013) Alternating anoxic/oxic condition combined with step-feeding mode for nitrogen removal in granular sequencing batch reactors (GSBRs). Separation and Purification Technology, 105, 63-68. (doi:10.1016/j.seppur.2012.12.015).

Record type: Article

Abstract

Alternating anoxic/oxic condition combined with step-feeding mode (AASF) has been reported to be an efficient method for nitrogen removal in granular sequencing batch reactor by our previous work. As carbon/nitrogen (C/N) ratio is one of the key factors impacting nitrogen removal efficiency, batch experiments using granules with a mean size of 1.3 mm under AASF were carried out for nitrogen removal from synthetic wastewater with C/N ratio of 5:1 and 3:1, respectively. It was found that over 90% nitrogen efficiency could be achieved for both C/N of 5 and 3. Furthermore, over 2 months operation was maintained for treating the wastewater with C/N ratio of 5:1 to investigate the long-term stability of granules under the new operational strategy. The results showed that AASF mode in GSBR could achieve over 85% nitrogen removal efficiency with great stability for long-term stability. This indicated that alternating anoxic/oxic condition combined with step-feeding mode is an effective strategy for nitrogen removal even from wastewater with low C/N ratio in granular sequencing batch reactor

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More information

Published date: 5 February 2013
Organisations: Civil Maritime & Env. Eng & Sci Unit

Identifiers

Local EPrints ID: 351876
URI: https://eprints.soton.ac.uk/id/eprint/351876
ISSN: 1383-5866
PURE UUID: f6730354-6feb-4865-89eb-400f5ec02a90

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Date deposited: 25 Apr 2013 14:14
Last modified: 18 Jul 2017 04:21

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