Modelado y control de una planta piloto de nanofiltración aplicada a la reutilización de aguas residuales en agricultura

Nowadays, the use of wastewater treatment facilities is necessary due to the scarcity of quality water resources. Nanofiltration plants are becoming more and more interesting, since they require less energy than other systems. A manually operated nanofiltration plant is used at Plataforma Solar de Almeria, based on the operators’ experience. This work is devoted to the analysis, modeling and control of this kind of plant, which has helped to both improve knowledge and to determine the optimal operating point and identify the variables that most influence the behavior of the system. Furthermore, an automatic control architecture is proposed, based on a multivariable controller with decoupling. It is possible to achieve ideal operating conditions in terms of production, safety and membranes maintenance, as can be seen in the results presented.