Simulation of un industrial waste treatment tank

Elcio Fernando Pereira, Luiz Mário Nelson Gois


The objective of the present work was to evaluate the operation of an industrial sedimentation tank used in the separation of solid waste from the petrochemical industry. The depth data were obtained through a “interface float”, while the diameters and the positions of the particles through the CFD simulation. The computational fluid dynamics simulator (FLUENT 6.3.26) was used to perform a multiphase simulation using the Euler-Lagrange approach and was used to determine the particles trajectories and cotours of solids accumulated in the bottom of the tank. This allowed a better understanding of solids accumulation and improvement of the cleaning process. In the simulation of the tank a large computational mesh comprising 464,094 computational nodes was designed. The use of the Euler-Lagrange approach meant that a discrete phase model had to be established and the parameters of Rosin-Rammler solids distribtion model for the boundary conditions of the simulation had to be determined.



CFD, settling tank; simulation

Full Text:



Crowe, C.T., Sommerfeld, M. & Tushi, Y. (1998). Multiphase Flows with Droplets and Particles. CRC Press: Boca Raton, FL.

Dickenson, J.A. & Sansalone, J. J. (2009). Discrete Phase Model Representation of Particulate Matter (PM) for Simulating Separation by Hydrodynamic Unit Operations. Env. Sci., 43(1): 8220-8226.

Ekama, G. A. & Marais, P. (2004). Assessing the applicability of the 1D flux theory to full-scale secondary settling tank design with a 2D hydrodynamic model. Water Research, 38(3): 495-506.

Flamant, O. (2004). Experimental Analysis and Simulation of Settling Process. Proc. Saf. Env. Prot.,. 82(4): 312-318.

Kahane, R., Nguyen, T. & Schwarz, M. P., (2002). CFD modelling of thickeners at Worsley Alumina App. Math. Mod., 26 (02): 281-296.

Matko, T. (1996). Recent Progress in the Numerical Modelling of Wastewater Sedimentation Tanks, Proc. Saf. Env. Prot., 74(4): 245-258.

Ramin, E., (2014). A new settling velocity model to describe secondary sedimentation, Water Research, 66: 447-458.

Rostami, F. ( 2011). Numerical modeling on inlet aperture effects on flow pattern in primary settling tanks. .Appl. Math. Mod.35(6): 3012-3020.

Veselind, P. A. (1980). The Rosin-Rammler Particle size distribution. Resource Recovery and Conservation,. 5: 275 – 277.

Yu, L. (2013). Multiphase modeling of settling and suspension in anaerobic digester. Appl. Energy, 111: 28-39.



  • There are currently no refbacks.

Base de Dados e Indexadores: Base, Diadorim,, DOI Crossref, Dialnet, Scholar Google, Redib, Doaj, Latindex, Redalyc, Portal de Periódicos CAPES

Research, Society and Development - ISSN 2525-3409

Licença Creative Commons
Este obra está licenciado com uma Licença Creative Commons Atribuição 4.0 Internacional

Rua Irmã Ivone Drumond, 200 - Distrito Industrial II, Itabira - MG, 35903-087 (Brasil)