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Modelación de la transferencia de oxágeno en sistemas de aereación mediante un modelo de dos zonas simplificado

A new two zone simplified oxygen mass-transfer model with an analytical solution was proposed and used to analyze the unsteady state reaeration data of diffused reaeration systems in order to find the volumetric mass-transfer coefficients. Series of unsteady state reaeration tests in a 1000 l tank w...

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Bibliographic Details
Main Authors: Durán Herrera, Esteban, Rojas Meza, Gerardo
Format: Online
Language:spa
Published: Universidad de Costa Rica 2009
Online Access:https://revistas.ucr.ac.cr/index.php/cienciaytecnologia/article/view/2641
Description
Summary:A new two zone simplified oxygen mass-transfer model with an analytical solution was proposed and used to analyze the unsteady state reaeration data of diffused reaeration systems in order to find the volumetric mass-transfer coefficients. Series of unsteady state reaeration tests in a 1000 l tank was performed to validate the model. The effect of the air flow rate and the temperature upon the mass-transfer coefficients was studied and empirical equations were used to successfully correlate them. The air flow rate was varied from 0,50 to 1,33 - 10-3 normal m3/s and the water temperature was varied from 293,25 to 303,25 K. It was found that the new model describes mathematically the aeration process very well and gives a better physical understanding of it.