Published Jul 30, 2015



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Andrés Felipe Torres-Franco, MSc

Nancy Vásquez-Sarria, PhD

Jenny Alexandra Rodriguez-Victoria, PhD

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Abstract

A pilot-scale study was conducted to evaluate a traditional contact stabilization activated sludge system (CSASC) and a modified CSAS (CSASM) treating domestic wastewater. The CSASC system was comprised of a contact reactor (CR), a stabilization reactor (SR) and a secondary settler (SS); the CSASM included a second CR, a second SS (CR2 and SS2), and a modified SR (SRM) divided into four zones: an attached-suspended growth zone which allowed the system to reach an average sludge retention time close to 36 d and favored the occurrence of nitrification; an anoxic zone for denitrification occurrence; an aerated suspended growth zone with a high presence of organic carbon; and an additional aerated suspended growth zone with a high ammonia concentrations environment. The CSASC’s removal efficiencies of chemical oxygen demand (COD) and total ammonia nitrogen (TAN) were respectively 94±4 % and 53±12%; whereas CSASM’s efficiencies were 88±7% for COD and 92±7% for TAN. Concentrations of TAN and NO3 --N in the CSASC’s final effluent were 14.3±5.2 and 5.0±2.9 mg×L-1; and 4.8±4.4 and 9.1±5.8 mg×L-1 in the CSASM’s final effluent. Results demonstrated that the proposed configuration obtained higher nitrogen removal efficiencies than traditional CSAS.

Keywords

Lodos activados, Estabilización por Contacto, materia orgánica carbonácea, material nitrogenado, agua residual domésticaactivated sludge, contact stabilization, organic carbon, nitrogen removal, domestic wastewater

References
[1] W. Gujer and D. Jenkins, “The contact stabilization activated sludge process—oxygen utilization, sludge production and efficiency”, Water Research, vol. 9, no. 5, pp. 553-560, 1975.
[2] W. Gujer and D. Jenkins, “A nitrification model for the contact stabilization activated sludge process”, Water Research, vol. 9, no. 5, pp. 561-566, 1975.
[3] N. Z. Al-Mutairi, F. A. Al-Sharifi and S. B. Al-Shammari, “Evaluation study of a slaughterhouse wastewater treatment plant including contact-assisted activated sludge and DAF”, Desalination, vol. 225, no. 1, pp. 167-175, 2008.
[4] R. Al-Sa’ed and O. Zimmo, “Process performance evaluation of the contact stabilisation system at Birzeit University”, International Journal of Environment and Pollution, vol. 21, no. 5, pp. 511-518, 2004.
[5] S. N. Vásquez, V. J. Rodríguez and L. P. Torres, “Comportamiento del nitrógeno en un sistema de lodos activados en la modalidad de estabilización por contacto tratando aguas residuales domésticas”, Afinidad, vol. 67, no. 548, pp. 283-288, 2010.
[6] F. Meerburg, S. Vlaeminck, J. Vercamer and N. Boon, “Turn it up!: High-load Contact Stabilization (HiCS) is a valuable activated sludge process for maximizing sludge production from sewage”, in Proc. 2nd IWA Specialist conference on EcoTechnologies for Sewage Treatment Plants (EcoSTP-2014), 2014.
[7] W. V. Alexander, G. Ekama and G. V. R. Marais, “The activated sludge process part 2. Application of the general kinetic model to the contact stabilization process”, Water Research, vol. 14, no. 12, pp. 1737-1747, 1980.
[8] C. W. Randall and D. SEN, “Full-scale evaluation of an integrated fixed-film activated sludge (IFAS) process for enhanced nitrogen removal”, Water Science and Technology, vol. 33, no. 12, pp. 155-162, 1996.
[9] M. Tizghadam, C. Dagot and M. Baudu, “Wastewater treatment in a hybrid activated sludge baffled reactor”, Journal of Hazardous Materials, vol. 154, no. 1, pp. 550-557, 2008.
[10] A. K. Thalla, R. Bhargava and P. Kumar, “Nitrification kinetics of activated sludge-biofilm system: A mathematical model”, BioresourceTechnology, vol. 101, pp. 5827-5835, 2010.
[11] I. A. Hamdy, M. A. Mahmoud, S. Mohamed, O. Alaa and M. Mostafa, “The effects of modification for contact stabilization activated sludge on EBPR”, HBRC Journal, vol. 10, no. 1, pp. 92-99, 2014.
[12] APHA. Standard methods for the examination of water and wastewater, 21st ed. Washington: APHA, American Water Works Assoc. and Water Environment Federation, 2005.
[13] B. E. Rittmann and P. L. Mccarty, “Model of steady state biofilm kinetics”, Biotechnology and Bioengineering, vol. 22, no. 11, pp. 2343-2357, 1980.
[14] B. E. Rittmann and J. A. Manem, “Development and experimental evaluation of a steadystate, multispecies biofilm model”, Biotechnology and Bioengineering, vol. 39, no. 9, pp. 914-922, 1992.
[15] M. Fouad and R. Bhargava, “A simplified model for the steady-state biofilm-activated sludge reactor”, Journal of Environmental Management, vol. 74, no. 3, pp. 245-253, 2005.
[16] C. Grady, G. T. Daigger and H. Elm, “Biological wastewater treatment. Revised and expanded”, Environmental Science and Pollution Control Series. Marcel Dekker, 1999.
[17] Y. H. Lin, “Kinetics of nitrogen and carbon removal in a moving-fixed bed biofilm reactor”, Applied Mathematical Modelling, vol. 32, no. 11, pp. 2360-2377, 2008.
[18] H. Spanjers and P. Vanrolleghem, “Respirometry as a tool for rapid characterization of wastewater and activated sludge”, Water Science and Technology, vol. 31, no. 2, pp. 105-114, 1995.
[19] Q. Feng, Y. Wang, T. Wang, H. Zheng, L. Chu, C. Zhang and X. H. Xing, “Effects of packing rates of cubic-shaped polyurethane foam carriers on the microbial community and the removal of organics and nitrogen in moving bed biofilm reactors”, Bioresource Technology, vol. 117, pp. 201-207, 2012.
[20] Metcalf and Eddy. Wastewater engineering: treatment and reuse. New York: McGraw-Hill, 2003.
[21] T. Mañunga, J. A. Rodríguez Victoria and P. Torres Lozada, “Tratamiento de agua residual doméstica sin clarificación primaria en un sistema de lodos activados en la modalidad de estabilización por contacto”. Revista Científica Ingeniería y Desarrollo, vol. 30, no. 2, pp. 246-260, 2012.
[22] N. Bernet and M. Spérandio, “Principles of nitrifying processes”, in Environmental technologies to treat nitrogen pollution, 1st ed. London: IWA Publishing, 2009, pp. 23-37.
[23] F. Çeçen, E. Orak and P. Gökçin, “Nitrification studies on fertilizer wastewaters in activated sludge and biofilm reactors”, Water Science and Technology, vol. 32, no. 12, pp. 141-148, 1995.
[24] J. Liu, B. Wang, W. Li, C. Jin, X. Cao and L. Wang, “Removal of nitrogen from coal gasification and coke plant wastewaters in A/O submerged biofilm-activated sludge (SBF-AS) hybrid system”, Water Science and Technology, vol. 34, no. 10, pp 17-24, 1996.
How to Cite
Torres-Franco, A. F., Vásquez-Sarria, N., & Rodriguez-Victoria, J. A. (2015). Performance of novel contact stabilization activated sludge system on domestic wastewater treatment. Ingenieria Y Universidad, 19(2), 7 - 20. https://doi.org/10.11144/Javeriana.iyu19-2.pncs
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