pH controller for water treatment using fuzzy logic

In recent years the industrial application of advanced control techniques for the process industries has become more demanding, mainly due to the increasing complexity of the processes themselves as well as to enhanced requirements in terms of product quality and environmental factors. Therefore the process industries require more reliable, accurate, robust, efficient and flexible control systems for the operation of process plant. In order to fulfill the above requirements there is a continuing need for research on improved forms of control. In Industries, pH of a solution plays a major role in the output and efficiency of the system. Deviation in pH can affect health of humans and plants. World Health Organization has issued an order that pH value of metro water should be maintained at 7 which is a neutral value. Nowadays in industries pH value is maintained only using manual methods. This method cannot be determined as error less and accurate. This is one of the most important reasons that an automatic pH controller should be developed and used in industries. During the manual pH control there many possibilities for error to occur which in turn may affect many life forms. This automatic pH control method is fast, error free and accurate.