Model-based pH monitor for sensor assessment.
Owing to the nature of the treatment processes, monitoring the processes based on individual online measurements is difficult or even impossible. However, the measurements (online and laboratory) can be combined with a priori process knowledge, using mathematical models, to objectively monitor the treatment processes and measurement devices. The pH measurement is a commonly used measurement at different stages in the drinking water treatment plant, although it is a unreliable instrument, requiring significant maintenance. It is shown that, using a grey-box model, it is possible to assess the measurement devices effectively, even if detailed information of the specific processes is unknown.
van Schagen
Kim
K
DHV BV, PO Box 1132, Amersfoort 3800 BC, The Netherlands. kim.vanschagen@dhv.com
Rietveld
Luuk
L
Veersma
Alex
A
Babuska
Robert
R
D000468:Alkalies / Q000737:chemistry; D003198:Computer Simulation; D006863:Hydrogen-Ion Concentration; D007753:Laboratories; D008962:Models, Theoretical; D009426:Netherlands; D018508:Water Purification / Q000295:instrumentation*
D000468:Alkalies