Abstract
A pH-process model for a chemical waste-water treatment plant is constructed by applying basic physico-chemical laws. The unknown composition of the wastewater is modelled by a composition of hypothetical chemical species which best describe the titration curves of real liquid samples. The dissociation parameters of the coagulant, aluminium sulphate, is also determined by using appropriate titration curves. The overall pH-model comprises a linear state model of concentrations and an implicit output model describing the physico-chemical equilibrium conditions. The estimation of the hypothetical concentrations is performed by a Kalman-type filtering algorithm obtained with the aid of a certain transformation. Using a non-linear transformation of the estimates, a deviation signal is generated and fed into the PI-controller. A feedforward control loop was connected to the algorithm and results of two simplifications of the algorithm are presented. After tuning by simulation, these algorithm variations we test...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
