System dynamics for sequencing batch reactors modeling
DOI:
https://doi.org/10.5902/2236117014314Keywords:
System dynamics, Sequencing batch reactors, Vensim.Abstract
Wastewater treatment by sequencing batch reactors is a variation of the activated-sludge process, because they combine all of the treatment steps and processes into a single tank. This paper presents a model created in Vensim and based on system dynamics with the aim of simu- lating the filling and depletion of the tanks in a wastewater treatment system by sequencing batch reactors, considering a high variability of the inflow along the day. The system shown is comprised of two tanks, a bypass, and an optional influent equalization basin. Some examples are included to illustrate the capacity of the model to simulate different system configurations, something that is supported by the results of these examples. The model can be adapted to include characteristics of similar wastewater treatment systems, allowing the evaluation of different conditions depending on the characteristics of wastewater inflows and physical or chemical features of the treatment plant.
Downloads
References
AL-REKABI, W. S.; QIANG, H.; QIANG, W. W. Review on sequencing batch reactors. Pakistan Journal of nutrition, v. 6(1), p. 11–19, 2007.
FLANAGAN, M. J.; BRACKEN, B. D. Design procedures for dissolved oxygen control of activated sludge processes. Municipal Environmental Research Laboratory, Office of Research and Development, US Environmental Protection Agency. Cincinnaty, 1977.
FORD, F. A. Modeling the environment: an introduction to system dynamics models of environmental systems. 2. ed. Washington D.C.: Island Press, 2009. 400 p.
GONÇALVES, J. C. S. I. Desenvolvimento de modelo numérico para a simulação da qualidade da água em rios utilizando o software Vensim PLE. Dissertação (Mestrado em Engenharia Civil), Universidade de São Paulo, 2009.
IZQUIERDO, L. R.; GALÁN, J. M.; SANTOS, J. I.; OLMO, R. D. Modelado de sistemas complejos mediante simulación basada en agentes y mediante dinámica de sistemas. EMPIRIA. Revista de Metodología de Ciencias Sociales, n. 16, p. 85–112, 2008.
LIU, Y.; GUO, H.; YU, Y.; DAI, Y.; ZHOU, F. Ecological–economic modeling as a tool for watershed management: a case study of Lake Qionghai watershed, China. Limnologica-Ecology and Management of Inland Waters, 38(2), p. 89–104, 2008.
LOPES, F. A. (2011). Drenagem ácida de minas concentrada como fonte de ferro para a coagulação e para a Reação de Fenton: aplicações no tratamento de esgoto sanitário de uma instituição de ensino superior. Dissertação (Mestrado em Engenharia de Minas, Metalurgia e dos Materiais), Universidade Federal do Rio Grande do Sul, 2011.
METCALF & EDDY, INC. Wastewater engineering: treatment and reuse. 4. ed. New York: McGraw-Hill, 2003. 1848 p.
NEW ENGLAND INTERSTATE WATER POLLUTION CONTROL COMMISSION. Sequencing Batch Reactor Design and Operational Considerations. Lowell, MA, 2005.
NOVOTNY, V.; IMHOFF, K. R.; OLTHOF, M.; KRENKEL, P. A. Handbook of urban drainage and wastewater. Hoboken, NJ : John Wiley & Sons Inc.,1989.
SANTOS, R. C. O.; BARBOSA FILHO, O.; GIORDANO, G. Proposta de um método racional para o dimensionamento de reatores de tratamento de esgotos por lodos ativados em bateladas para remoção de carga orgânica. Eng. sanit. ambient, v. 11, n. 2, p. 153–161, abr/jun 2006.
SOUZA, C. C. D. Estudo do desempenho de reatores de lodos ativados de fluxo contínuo e de batelada no tratamento de águas residuárias em regime não estacionário, Trabalho de Diplomação (Graduação em Engenharia Civil), Universidade Federal do Rio Grande do Sul, 2011.
STAVE, K. A. A system dynamics model to facilitate public understanding of water management options in Las Vegas, Nevada. Journal of Environmental Management, v. 67, n. 4, p. 303–313, 2003.
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY. Wastewater Technology Fact Sheet – Sequencing Batch Reactors. EPA 832-F-99-073. Washington D.C., 1999.
WEI, S.; YANG, H.; SONG, J.; ABBASPOUR, K. C.; XU, Z. System dynamics simulation model for assessing socio-economic impacts of different levels of environmental flow allocation in the Weihe River Basin, China. European Journal of Operational Research, v. 221, n. 1, p. 248–262, 2012.
Downloads
Published
How to Cite
Issue
Section
License
![Creative Commons License](http://i.creativecommons.org/l/by-nc-sa/4.0/88x31.png)
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
DECLARATION