Coagulation process control in water treatment plants using multiple model predictive control

A multiple model predictive control (MMPC) strategy is proposed for coagulation control in water treatment plants. The proposed control strategy is developed to work effectively with different local operating regions of the chemical dosing unit where coagulation takes place. The surface charge and pH values of the chemically treated water are controlled at the same time to reduce waste, operational costs and improve the quality of portable water distributed for public consumption by manipulating the flow rates of the chemical reagents. The simulation results show that coagulation control can be effectively controlled by using the proposed control strategy.