Water treatment system
Water treatment systems include primary, secondary and tertiary treatment stages through which tap water or waste water is converted into drinking water. In the initial stage, very large particles such as plastic, paper, etc. are screened and removed with the help of bar screens and sand removal systems. In the primary stage, the total suspended solids are removed with the help of a clarifier. Biological and chemical oxygen demand are removed in the secondary stage by an aeration process. The third stage system constitutes a filter to remove the remaining total suspended solids. It also constitutes a reverse osmosis system to remove total dissolved solids and other ions. In treated tanks, chlorination is performed to disinfect and remove bacteria present in the water.
A water treatment system consists of a different number of unit operations, such as clarifiers, filters, reverse osmosis systems, etc. Flow, pH, and pressure are indicators of whether these unit operations are functioning properly. When these parameters deviate from the standard values, signals from the flow meter, pH meter, pressure transmitter are sent to the SCADA direct control system, which sends an electrical signal or supply gas to the actuators of these automatic valves to open and close.