Inicio  /  Water  /  Vol: 14 Par: 3 (2022)  /  Artículo
ARTÍCULO
TITULO

Exploring the Removal of Organic Matter in Constructed Wetlands Using First Order Kinetic Models

Bárbara Santos Soares    
Alisson Carraro Borges    
Antonio Teixeira de Matos    
Rubens Barrichello Gomes Barbosa and Fabyano Fonseca e Silva    

Resumen

Mathematical models have become an excellent tool to evaluate the characteristics and performance of Constructed Wetlands (CWs). They help to characterize the dynamics of pollutant removal in these systems. The aim of this research was to evaluate the kinetics of organic matter removal in CWs using two models: (i) the conventional first order model and (ii) the sigmoidal or k-n model. For this purpose, data from 41 CWs where domestic sewage is treated were used. The cluster analysis was performed to identify similar groups of CWs based on the estimation of model coefficients. According to the results obtained, the model that provides a better fit for the removal of organic matter in CWs is the sigmoidal-type. However, its ?n? coefficient, which would represent an increase in resistance to degradation, remains a not totally explained variable. The sigmoidal or k-n model is promising, presenting good adjustment indices.

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Revista: Water