Optimal-design-and-operation-of-a-UASB-reacto_2015

Optimal-design-and-operation-of-a-UASB-reacto_2015_Computers-and-ElectronicsOptimaldesignandoperationofaUASBreactorfordairycattlemanureF.Haugena,⇑,R.Bakkea,B.Liea,J.Hovlandb,K.VasdalcaTelemarkUniversityCollege,KjolnesRing56,N-3918Porsgrunn,NorwaybTel-Tek,N-3918Porsgrunn,NorwaycTelemarkUniversityCollege,Porsgrunn,andFossFarm,Skien,NorwayarticleinfoArticlehistory:Received6November2013Receivedinrevisedform17November2014Accepted2January2015Keywords:AnaerobicdigestionUASBreactorBiogasMathematicalmodelsOptimizationabstractOptimaldesignandoperationofaplannedfull-scaleUASBreactoratadairyfarmaredeterminedusingoptimizationalgorithmsbasedonsteadystatesimulationsofadynamicADprocessmodelcombinedwithmodelsofthereactortemperatureandheatexchangertemperaturesbasedonenergybalances.Availablefeedstockis6m3/ddairymanureproducedbytheherd.Threealternativeoptimizationproblemsaresolved:Maximizationofproducedmethanegasflow,minimizationofreactorvolume,andmaximizationofpowersurplus.Constraintsoftheoptimizationpro