Extremum-seeking control of redox processes in Wastewater Chemical Treatment Plants

E. C. MARTÍNEZ

Computer-Aided Chemical Engineerin

Elsevier

Lugar: Amsterdam; Año: 2007; p. 865 - 870

Monitoring and control of redox processes are key to operate wastewater chemicaltreatment plants at high-loading-rate whilst rejecting concentration and compositiondisturbances. Carbon dioxide concentration and oxidation-reduction potential (ORP),were selected here as inferential measurements of oxidation kinetics. An extremumseekingcontrol cascade is proposed for advanced oxidation processes (AOPs). Thelogic of the master loop is designed to constantly drive ORP readings to its achievablemaximum. The inner-slave loop in the cascade is in charge of regulating the carbondioxide production rate by manipulating the loading rate. The logic of the controlstrategy is simple and cheap to implement using standard sensors and control hardware.