Probe dynamics influence on determination of volumetric oxygen transfer coefficient

Abstract

This paper deals with practical aspects of volumetric oxygen transfer coefficient determination. The attention was paid to influence of dissolved oxygen probe dynamics on measurements. A new identification method of volumetric oxygen transfer coefficient was developed. This method involves numerical integral calculation. The new method and three other methods (graphical, logarithmic and regression) of determining volumetric oxygen transfer coefficient value were applied. The comparative simulation research was done using dissolved oxygen concentration model. All four methods were finally aplied to real biotechnological wastewater process with the activated sludge.

Desenvolvimento de um modelo linear e projeto de um controlador para concentração de oxigênio dissolvido em um reator de lodo ativado em escala de bancada

“…Essa reação química, combinada com o processo de difusão do oxigênio através da membrana, tem sido modelada em [3,6] …”

“…Para o projeto e a análise do controlador do tipo PD (proporcional-derivativo), utilizou-se o modelo linearizado desenvolvido na seção anterior, indicado em (6).…”