Analogue and microprocessor control of an electrochemical waste-acid treatment process
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Electrochemical cells used for effluent treatment may, in many cases, require automatic control to handle load changes in the waste discharge. Results are presented for the automatic neutralization of a simulated chloralkali waste-acid stream using hydroxyl generated by an electrochemical cell operating under current control. The performance of a simple analogue PID controller is compared with that of a modern microprocessor-based adaptive controller.
KeywordsPhysical Chemistry Hydroxyl Treatment Process Automatic Control Electrochemical Cell
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- F. G. Shinskey, ‘pH and pIon Control in Process and Waste Streams’, John Wiley, New York (1973).Google Scholar
- ‘Controlling pH or Ion Concentration of a Stream’, British Patent Application No. 793/089.Google Scholar
- D.W. Clarke and P. J. Gawthorp,Proc. IEE 122 No. 9 (1975) 929.Google Scholar
- J. G. Zeigler and N. B. Nichols,Trans. ASME 64 (1942) p. 759.Google Scholar
- K. J. Åstrom and B. Wittenmark,Automatica 9 (1973) 185.Google Scholar
- A. J. Morris and Y. Nazer,Automatica (1978).Google Scholar