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dc.contributor.authorMuralidharan Nair, Abhilash
dc.contributor.authorGonzalez Silva, Blanca Magdalena
dc.contributor.authorHaugen, Finn
dc.contributor.authorRatnaweera, Harsha
dc.contributor.authorØsterhus, Stein Wold
dc.identifier.citationJournal of Water Process Engineering. 2020, 37:101494 1-13.en_US
dc.description.abstractEnhanced biological phosphorus removal (EBPR) from municipal wastewater has been achieved in a multistage Moving Bed Biofilm Reactor (MBBR) configuration. The process operations can be further optimized by real-time monitoring of water quality parameters in the individual chambers of the EBPR-MBBR process. This work presents a hybrid, soft-sensor as a cost-effective monitoring option for real-time estimation of phosphates (PO43−-P) and soluble COD (sCOD) concentrations in the anaerobic chambers of a multistage EBPR-MBBR pilot plant. The soft-sensor is developed by implementing an Extended Kalman filter on a reduced-order nutrient removal model. The hybrid model is constructed by combining mechanistic elements of phosphorus release kinetics in anaerobic conditions, and a statistical model correlating PO43−-P and sCOD concentration with conductivity measurements. A systematic method for developing, calibrating a reduced-order model and tuning of the Kalman filter parameters have been discussed in this work. The drift in soft-sensor performance was studied and practical solutions were suggested for re-calibrating the model utilizing data from periodic lab measurements. The estimation results are successfully validated against standardized lab measurements to demonstrate the accuracy of the soft-sensing algorithm.en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleReal-time monitoring of enhanced biological phosphorus removal in a multistage EBPR-MBBR using a soft-sensor for phosphates.en_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.source.journalJournal of Water Process Engineeringen_US
dc.relation.projectNorges forskningsråd: 247612en_US
dc.description.localcodeThis is an open access article distributed under the terms of the Creative Commons CC-BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en_US

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal