Design and implementation of polynomial based controllers in pH neutralization system for effluent treatment process

Abstract

Most of the process industries generate wastewater as an offshoot of their production The effluent from the process industries is a major source of environmental pollution It also has a major impact on human health In accordance with the environmental conservation act and environmental rules it is mandatory to install Effluent Treatment Plants to treat the wastewater before it is discharged An important and common technique used in wastewater treatment system is neutralization The purpose of neutralization is to adjust or control the pH value of the wastewater so that it does not have impact over the environment However it is very difficult to control pH process with adequate performance due to its severe nonlinearity time varying properties and sensibility to small disturbance when working near the equivalence point Therefore more reliable accurate robust efficient and flexible control systems are required for pH neutralization process In order to fulfill the above requirements there is a continuing need for research on improved forms of control Many research studies have been reported in the literature for pH neutralization process