Combined anaerobic–aerobic SBR for the treatment of piggery wastewater

Nicolas Bernet, N. Delgenes, Joseph C. Akunna, J. P. Delgenes, René Moletta

Research output: Contribution to journalArticle

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Abstract

Biological treatment of a piggery wastewater for organic carbon and nitrogen removal in a combined anaerobic–aerobic system was investigated using two laboratory-scale sequencing batch reactors. The cycle length was 24 h. In the anaerobic reactor, fed with raw wastewater and recycling from the aerobic reactor, denitrification followed by anaerobic digestion of organic carbon was observed. In the aerobic reactor, more organic carbon removal and ammonia oxidation to mainly nitrite occurred. Denitrification was also observed in the aerobic reactor during the filling period, when mixed liquor dissolved oxygen concentration was very low. Three recycle-to-influent ratios from 1 to 3 were tested. Average performances of the overall process, in the different conditions tested, were a TOC removal of 81 to 91% and 85 to 91% of TKN. 10 to 28% of the initial TKN was discharged as N-NOx because of the low recycle-to-influent ratios used. The higher the recycle-to-influent ratio, the lower the concentrations of nitrogen oxides in the final effluent. However, the effect of this ratio was attenuated by the phenomenon of denitrification in the aerobic reactor which increased the performances of the process.
Original languageEnglish
Pages (from-to)611-619
Number of pages9
JournalWater Research
Volume34
Issue number2
DOIs
StatePublished - Feb 2000

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Denitrification
Organic carbon
Wastewater
denitrification
organic carbon
wastewater
Removal
Nitrogen removal
Anaerobic digestion
Nitrogen oxides
Batch reactors
Dissolved oxygen
Recycling
Effluents
Ammonia
Oxidation
organic nitrogen
nitrogen oxides
nitrite
digestion

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Bernet, N., Delgenes, N., Akunna, J. C., Delgenes, J. P., & Moletta, R. (2000). Combined anaerobic–aerobic SBR for the treatment of piggery wastewater. Water Research, 34(2), 611-619. DOI: 10.1016/S0043-1354(99)00170-0

Bernet, Nicolas; Delgenes, N.; Akunna, Joseph C.; Delgenes, J. P.; Moletta, René / Combined anaerobic–aerobic SBR for the treatment of piggery wastewater.

In: Water Research, Vol. 34, No. 2, 02.2000, p. 611-619.

Research output: Contribution to journalArticle

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abstract = "Biological treatment of a piggery wastewater for organic carbon and nitrogen removal in a combined anaerobic–aerobic system was investigated using two laboratory-scale sequencing batch reactors. The cycle length was 24 h. In the anaerobic reactor, fed with raw wastewater and recycling from the aerobic reactor, denitrification followed by anaerobic digestion of organic carbon was observed. In the aerobic reactor, more organic carbon removal and ammonia oxidation to mainly nitrite occurred. Denitrification was also observed in the aerobic reactor during the filling period, when mixed liquor dissolved oxygen concentration was very low. Three recycle-to-influent ratios from 1 to 3 were tested. Average performances of the overall process, in the different conditions tested, were a TOC removal of 81 to 91% and 85 to 91% of TKN. 10 to 28% of the initial TKN was discharged as N-NOx because of the low recycle-to-influent ratios used. The higher the recycle-to-influent ratio, the lower the concentrations of nitrogen oxides in the final effluent. However, the effect of this ratio was attenuated by the phenomenon of denitrification in the aerobic reactor which increased the performances of the process.",
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Bernet, N, Delgenes, N, Akunna, JC, Delgenes, JP & Moletta, R 2000, 'Combined anaerobic–aerobic SBR for the treatment of piggery wastewater' Water Research, vol 34, no. 2, pp. 611-619. DOI: 10.1016/S0043-1354(99)00170-0

Combined anaerobic–aerobic SBR for the treatment of piggery wastewater. / Bernet, Nicolas; Delgenes, N.; Akunna, Joseph C.; Delgenes, J. P.; Moletta, René.

In: Water Research, Vol. 34, No. 2, 02.2000, p. 611-619.

Research output: Contribution to journalArticle

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T1 - Combined anaerobic–aerobic SBR for the treatment of piggery wastewater

AU - Bernet,Nicolas

AU - Delgenes,N.

AU - Akunna,Joseph C.

AU - Delgenes,J. P.

AU - Moletta,René

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N2 - Biological treatment of a piggery wastewater for organic carbon and nitrogen removal in a combined anaerobic–aerobic system was investigated using two laboratory-scale sequencing batch reactors. The cycle length was 24 h. In the anaerobic reactor, fed with raw wastewater and recycling from the aerobic reactor, denitrification followed by anaerobic digestion of organic carbon was observed. In the aerobic reactor, more organic carbon removal and ammonia oxidation to mainly nitrite occurred. Denitrification was also observed in the aerobic reactor during the filling period, when mixed liquor dissolved oxygen concentration was very low. Three recycle-to-influent ratios from 1 to 3 were tested. Average performances of the overall process, in the different conditions tested, were a TOC removal of 81 to 91% and 85 to 91% of TKN. 10 to 28% of the initial TKN was discharged as N-NOx because of the low recycle-to-influent ratios used. The higher the recycle-to-influent ratio, the lower the concentrations of nitrogen oxides in the final effluent. However, the effect of this ratio was attenuated by the phenomenon of denitrification in the aerobic reactor which increased the performances of the process.

AB - Biological treatment of a piggery wastewater for organic carbon and nitrogen removal in a combined anaerobic–aerobic system was investigated using two laboratory-scale sequencing batch reactors. The cycle length was 24 h. In the anaerobic reactor, fed with raw wastewater and recycling from the aerobic reactor, denitrification followed by anaerobic digestion of organic carbon was observed. In the aerobic reactor, more organic carbon removal and ammonia oxidation to mainly nitrite occurred. Denitrification was also observed in the aerobic reactor during the filling period, when mixed liquor dissolved oxygen concentration was very low. Three recycle-to-influent ratios from 1 to 3 were tested. Average performances of the overall process, in the different conditions tested, were a TOC removal of 81 to 91% and 85 to 91% of TKN. 10 to 28% of the initial TKN was discharged as N-NOx because of the low recycle-to-influent ratios used. The higher the recycle-to-influent ratio, the lower the concentrations of nitrogen oxides in the final effluent. However, the effect of this ratio was attenuated by the phenomenon of denitrification in the aerobic reactor which increased the performances of the process.

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Bernet N, Delgenes N, Akunna JC, Delgenes JP, Moletta R. Combined anaerobic–aerobic SBR for the treatment of piggery wastewater. Water Research. 2000 Feb;34(2):611-619. Available from, DOI: 10.1016/S0043-1354(99)00170-0