Remoção de nitrogênio de esgoto sanitário em reator de leito estruturado operado com diferentes ciclos de aeração intermitente
Palabras clave:
nitrificação, desnitrificação e material suporte.Resumen
O principal objetivo deste trabalho foi avaliar a eficiência de remoção de nitrogênio de esgoto sanitário em um reator de leito estruturado submetido a diferentes ciclos de aeração intermitente (AI). Foram estudados 2 ciclos de AI: ciclo I (2h aeração ligada (AE)/ 1h aeração desligada (AN)) e ciclo II (2h AE/ 2h AN. No ciclo I foi obtido 80±15% de remoção de NKT, 86±15% de N-NH4+ e 68±9% de remoção de Nitrogênio Total (NT) e no Ciclo II de 58±20%, 72±28% e 41±6% de remoção de NKT, N-NH4+ e NT, respectivamente. A eficiência de desnitrificação nos 2 ciclos foi acima de 70%, indicando que no reator ocorreu o processo de Nitrificação e Desnitrificação Simultânea (NDS). Dos resultados conclui-se que o sistema trabalhado foi eficiente em termos de remoção de nitrogênio, e que a fase que apresentou a maior disponibilidade de Oxigênio Dissolvido (OD) e relação C/N (Ciclo I), foi a que obteve as menores concentrações efluentes de N-NH4+.Descargas
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AMERICAN PUBLIC HEALTH ASSOCIATION (APHA). Standards Methods for the Examination of Water e Wastewater. Washington, D.C; 2005.
AHN, Y, H. Sustainable nitrogen elimination biotechnologies: A review. Process biochemistr, v. 41, 2006, 1709–1721p.
ARAÚJO J.R., ZAIAT, M. An upflow fixed-bed anaerobiceaerobic reactor for removal of organic matter and nitrogen from L-lysine plant wastewater. Can. J. Civ. Eng. v.36, 2009, p. 1085 -1094.
BARANA, A.C., LOPES, D.D., MARTINS, T.H., POZZI, E., DAMIANOVIC, M.H.R.Z., DEL NERY, V., FORESTI, E. Nitrogen and organic matter removal in an intermittently aerated fixed-bed reactor for post-treatment of anaerobic effluent from a slaughterhouse wastewater treatment plant. Journal of Environmental Chemical Engineering. v.1, 2013, p.453-459.
CAPODICI, M., DI BELLA, G., DI TRAPANI, D., TORREGROSSA, M. Pilot scale experiment with MBR operated in intermittent aeration condition: Analysis of biological performance. Bioresour Technol. p.177, 2015, 398-405.
COLLIVIGNARELLI, C., BERTANZA, G. Simultaneous nitrification-denitrification processes in activated sludge plants: Performance and applicability. Water Science and Technology. v.40, 1999, p.187–194.
CORREA, C.Z.; PRATES, K.V.M.C.; OLIVEIRA, E.F. de.; LOPES, D.D.; BARANA, A.C. Nitrification/denitrification of real municipal wastewater in an intermittently aerated structured bed reactor. Journal of Water Process Engineering. v. 23, 2018, p. 134-141.
DANIEL L.M.C., POZZI, E., FORESTI, E., CHINALIA, F.A.. Removal of ammonium via simultaneous nitrificationedenitrification nitrite-shortcut in a single packed-bed batch reactor. Bioresource Technology. v.100, n.30, 2009, p.1100-1107.
EPA. Manual: Nitrogen Control. United States Environmental Protection Agency, Washington, DC, 1993.
FU, B., LIAO, X., DING, L., REN, H. Characterization of microbial community in an aerobic moving bed biofilm reactor applied for simultaneous nitrification and denitrification. World J. Microbiol. Biotechnol. v.26, n.11, 2010, p.1981- 1990.
GUADIE, A., XIA, S., ZHANG, Z., ZELEKE, J., GUO, W., NGO, H.H., HERMANOWICZ S.W. Effect of intermittent aeration cycle on nutrient removal and microbial community in a fluidized bed reactor-membrane bioreactor combo system. Bioresour Technol. v.156, 2014, p. 195-205.
GUO, J., ZHANG, L., CHENG, W., MA, F., LIU, H., TIAN, Y.. The regulation and control strategies of a sequencing batch reactor for simultaneous nitrification and denitrification at different temperatures. Bioresour Technol. v.133,2013, p.59–67.
HENZE, M., HARREMOES, P., ARVIN, E., JANSEN, J.L.E. Wastewater treatment: biological and chemical processes. Berlin, Springer-Verlag, 1997.
KOTLAR, E., TARTAKOVSKY, B., ARGAMAN, Y., SHEINTUCH, M. The nature of interaction between immobilized nitrification and denitrification bacteria. Journal of Biotechnology. v.51, 1996, p.251-258.
MAYER, M., SMEETS, W., BRAUN, R.E., FUCHS, W. Enhanced ammonium removal from liquid anaerobic digestion residuals in an advanced sequencing batch reactor system. Water Sci Technol. v.60, n.7, 2009, p.1649-60.
MOCKAITIS, G., PANTOJA, J.L.R., RODRIGUES, J.A.D., FORESTI, E., ZAIAT, M., Continuous anaerobic bioreactor with a fixed-structure bed (ABFSB) for wastewater treatment with low solids and low applied organic loading content. Bioprocess Biosyst Eng. v.37, 2014, p.1361–1368.
MOURA, R.B., DAMIANOVIC, M. H. R. Z., FORESTI, E. Nitrogen and carbon removal from synthetic wastewater in a vertical structured-bed reactor under intermittent aeration. J. Environ. Manage. v.98, 2012, p.163 – 167.
NOGUEIRA, L.R., MELO, L. F., PURKHOLD, U., STEFAN, W., WAGNER, M. Nitrifying and heterotrophic population dynamics in biofilm reactors: effects of hydraulic retention time and the presence of organic carbon. Water Research. v.36, 2003, p.469–481.
OHASHI A., VIRAJ DE SILVA, D. G., MOBARRY, B., MANEM, J. A., STAHL, D. A., RITTMANN, B. E. Influence of substrate C/N ratio on the structure of multi-species biofilms consisting of nitrifiers and heterotrophs. Water Science and Technology. v.32, n.8, 1995, p.75–84.
PAREDES, D., KUCHK, P., MBWETTE, T.S.A., STANGE, F., MULLER, R.A., KOSER, H. New Aspects of Microbial Nitrogen Transformations in the Context of Wastewater Treatment – A Review. Eng. Life Sci. v.7, n.1, 2007, p.13–25.
SEDLAK, R.L. Phosphorus and Nitrogen Removal From Municipal Wastewater. 2. Edição, United Stated of America,1991.
VIRDIS, B., READ, S.T., RABAEY, K., ROZENDAL, R.A., YUAN, Z., KELLER, J. Biofilm stratification during simultaneous nitrification and denitrification (SND) at a biocathode. Bioresource Technology. v.102, n.1, 2011, p.334-41.
XIA, J., LI, J., WANG, R., LI, J., ZHANG, Z. Tracking composition and dynamics of nitrification and denitrification microbial community in a biofilm reactor by PCR-DGGE and combining FISH with flow cytometry. Biochemical Engineering Journal. v.49, n.3, 2010, p. 370–378.
WANG, J., PENG, Y., WANG, S., GAO, Y. Nitrogen Removal by Simultaneous Nitrification and Denitrification via Nitrite in a Sequence Hybrid Biological Reactor. Chinese Journal of Chemical Engineering. v.16, n.5, 2008, p.778-784.
Water Environmet Fedeeral, American Society of Civil Enginneers, Environmental and Water Resource Institute (WEF, EWRI, ASCE), 2005. Biological nutrient removal (BNR) operation in wastewater treatment plants. 29. New York.
WOSIACK, P.A., LOPES, D D., DAMIANOVIC, M.H.R.Z., FORESTI, E., GRANATO, D., BARANA, A. C. Removal of COD and nitrogen from animal food plant wastewater in an intermittently-aerated structured-bed reactor. Journal of Environmental Management. v.154, 2015, p.145-150.
YILMAZ, G., LEMAIRE, R., KELLER, J., YUAN, Z.. Simultaneous nitrification, denitrification, and phosphorus removal from nutrient-rich industrial wastewater using granular sludge. Biotechnology and Bioengineering. v.100, n.3, 2008, p.529–541.
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Direitos autorais Cadernos Zygmunt Bauman
Este obra está licenciado com uma Licença Creative Commons Atribuição 4.0 Internacional.
