Sistema de control para una planta de tratamiento de aguas residuales con un modelo dinámico de decantación
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Hernández Velásquez, Nathalie Johana
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En este trabajo se presenta la elaboración e implementación de un controlador para una planta de tratamiento de aguas residuales con sistema dinámico de decantación, en donde a grandes rasgos el proceso se puede definir como la interacción de una población microbiana contenida en un biorreactor, que consume la materia orgánica presente en el fluido entrante y pasa por un tanque decantador en donde se realiza una separación física de sólidos y líquidos dando como resultado agua clarificada. La metodología utilizada se conoce como Ajuste de Retroalimentación por referencia virtual (VFRT) y está basada en la recolección de datos de entraday salida de la planta para obtener el controlador a travás de una estructura definida que en este caso se especifica como un controlador PID (Proporcional Integral Derivativo). La señales de entrada están definidas como la dilución Oxígeno y del Sustrato altamente degradable, las variables de salida estudiadas corresponden al Sustrato y el Oxígeno. Para la obtención de datos fue necesario elaborar un simulador que representara adecuadamente el modelo acoplado con el sistema dinámico de decantación y los controladores resultantes son implementados en dos escenarios diferentes.
Abstract: This work presents the development and implementation of a controller for a wastewater treatment plant with a dynamic settling system, where in general the process can be defined as the interaction of a microbial population contained in a bioreactor, which consumes The organic matter present in the incoming fluid passes through a decanter tank where a physical separation of solids and liquids is carried out, resulting in clarified water. The methodology used is known as Feedback Adjustment by Virtual Reference (VFRT) and is based on the data collection of input and output from the plant to obtain the controller through a defined structure that in this case is specified as a PID controller (Proportional Integral Derivative). The input signals are defined as the Oxygen dilution and the highly degradable Substrate, the output variables studied correspond to the Substrate and the Oxygen. In order to obtain data it was necessary to elaborate a simulator that adequately represents the model coupled with the dynamic decantation system and the resulting controllers are implemented in two different scenarios.
Abstract: This work presents the development and implementation of a controller for a wastewater treatment plant with a dynamic settling system, where in general the process can be defined as the interaction of a microbial population contained in a bioreactor, which consumes The organic matter present in the incoming fluid passes through a decanter tank where a physical separation of solids and liquids is carried out, resulting in clarified water. The methodology used is known as Feedback Adjustment by Virtual Reference (VFRT) and is based on the data collection of input and output from the plant to obtain the controller through a defined structure that in this case is specified as a PID controller (Proportional Integral Derivative). The input signals are defined as the Oxygen dilution and the highly degradable Substrate, the output variables studied correspond to the Substrate and the Oxygen. In order to obtain data it was necessary to elaborate a simulator that adequately represents the model coupled with the dynamic decantation system and the resulting controllers are implemented in two different scenarios.