CHLORINATION CONTROL IN WATER TREATMENT PLANT BASED ON PLC AND SCADA

Abstract

The drinking water purification industry has become one of the largest industries in the world. Every human being needs to get clean water for its day to day activity. Currently, water purification systems in Delhi Technological University is manual. In the absence of automation, plant operators have to physically monitor performance values of water and equipment to determine the best settings on which to run the production equipment. This report focuses on the design and simulation of a PLC and SCADA-based water chlorination control system. The method used in this project describes the main components used in the system design such as pump, liquid level sensors, and solenoid valves. The ladder logic for the water and chlorine tank filling system was implemented by simulation using a Programmable Logic Controller (PLC). Simulation software was used to demonstrate the automation at tank filling and tank emptying in relation to the valve opening and closing. Flow simulation in the water tank is conducted to analyse the level on the sensors and the water tank is modeled in Simulink. Finally, the PLC ladder diagram is programmed, and the simulation results have verified the effectiveness of the design.