Visión Electrónica
Design of an Automated System for a Drinking Water Treatment Plant
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Resumen
The Municipality of Restrepo, Meta (Colombia), supplies water from the Caney River to the population through the Emiliano Restrepo Echeverría water treatment plant, with a capacity of 84.5 L/s. However, the lack of an efficient control system has been a challenge. To address this deficiency, an automatic dosing system for reagents such as 10% aluminum sulfate, caustic soda, sodium hypochlorite, and calcium was designed, using sensor data from devices like flow meters, pH meters, and turbidity meters. The design, based on the grafcet method and programmed in TIA Portal V16, includes a Human-Machine Interface (HMI) that displays the system's behavior and potential errors. Additionally, a feature has been incorporated to allow automatic transition to manual mode in case of technical failures or when operator intervention is necessary. This system not only records physicochemical variables but also controls dosing through electromechanical pumps to ensure the quality of water supplied to the population of Restrepo.