A pilot-scale primary maturation pond was spiked with 15N-labelled ammonia (15NH4Cl) and 15N-labelled nitrite (Na15NO2), in order to improve current understanding of the dynamics of inorganic nitrogen transformations and removal in WSP systems. Stable isotope analysis of δ15N showed that nitrification could be considered as an intermediate step in WSP, which is masked by simultaneous denitrification, under conditions of low algal activity. Molecular microbiology analysis showed that denitrification can be considered a feasible mechanism for permanent nitrogen removal in WSP, which may be supported either by ammonia-oxidising bacteria (AOB) or by methanotrophs, in addition to nitrite-oxidising bacteria (NOB). However, the relative supremacy of the denitrification process over other nitrogen removal mechanisms (e.g., biological uptake) depends upon phytoplanktonic activity.
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Research Article|
March 01 2010
Nitrification–denitrification in waste stabilisation ponds: a mechanism for permanent nitrogen removal in maturation ponds
M. A. Camargo Valero;
1Sección de Saneamiento Ambiental, Universidad Nacional de Colombia, Bogotá, Colombia
E-mail: macamargov@unal.edu.co
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L. F. Read;
L. F. Read
4School of Civil Engineering and Geosciences, University of Newcastle, Cassie Building, Newcastle upon Tyne NE1 7RU, UK
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D. D. Mara;
D. D. Mara
2School of Civil Engineering, University of Leeds, Leeds LS2 9JT, UK
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R. J. Newton;
R. J. Newton
3School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK
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T. P. Curtis;
T. P. Curtis
4School of Civil Engineering and Geosciences, University of Newcastle, Cassie Building, Newcastle upon Tyne NE1 7RU, UK
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R. J. Davenport
R. J. Davenport
4School of Civil Engineering and Geosciences, University of Newcastle, Cassie Building, Newcastle upon Tyne NE1 7RU, UK
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Water Sci Technol (2010) 61 (5): 1137–1146.
Citation
M. A. Camargo Valero, L. F. Read, D. D. Mara, R. J. Newton, T. P. Curtis, R. J. Davenport; Nitrification–denitrification in waste stabilisation ponds: a mechanism for permanent nitrogen removal in maturation ponds. Water Sci Technol 1 March 2010; 61 (5): 1137–1146. doi: https://doi.org/10.2166/wst.2010.963
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