Reingeniería del sistema de control de la planta de tratamiento de aguas residuales en la cartopel S.A.I.

Abstract

The project of reengineering the control system of the waste water treatment plant at CARTOPEL S.A.I., is developed with the finality of making an automatic working of the plant by using the controller Allen Bradley MicroLogix1400.

This work includes pH sensors, turbidity and dissolved oxygen, which are connected to the transmitter Liquiline CM444 to send the analog signals to the PLC and thus it can perform control to certify an adequate chemicals and biologic treatments of the water that is sent into the rain water channels in order to meet the physical and chemical properties of treated water, is to say the water which is sent into the rain water channels is within the norms and reglaments in course. Also for the purpose of improving the chemicals homogeneity of the engine speed agitator located in the tank in which the chemical treatment is performed through a frequency variator.

This research also presents an HMI screen which serves to monitor the system variables, the display also provides the direct interaction with each processing engine and can observe the system failure alarms and keep a record for each batch performed.