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1、MicrobialAggregatesinAnaerobicWastewaterTreatmentN.KosaricUniversityofWesternOntario,DepartmentofChemicalandBiochemicalEngineering,London,Ontario,Canada,N6A5B9R.BlaszczykLodzTechnicalUniversity,InstituteofChemicalEngineering,BioengineeringSection.90-924Lodz/Poland1Intr
2、oduction..................................................................282AnaerobicConversionProcesses.................................................283Bioreactors...................................................................353.1AnaerobicContactReactor......
3、...........................................363.2AnaerobicFilter...........................................................373.3UpflowAnaerobicSludgeBlanketReactor(UASBR)...........................383.4FluidizedorExpandedBedReactor.......................................
4、...393.5Discussion................................................................404Aggregation..................................................................414.1ThePhenomenonofBacterialAggregation....................................414.2GranulationinUASBReactors.
5、.............................................444.3TheInfluenceofProcessParametersonGranulesMaintenance..................464.4IndustrialApplicationofMicrobialAggregatesforWastewaterTreatmentinUASBReactors..................................................................
6、515References....................................................................55Thephenomenonaggregationofanaerobicbacteriagivesanopportunitytospeedupthedigestionrateduringmethanogenesis.TheaggregatesaremainlycomposedofmethanogenicbacteriawhichconvertacetateandH2/CO
7、2intomethane.Otherbacteriaarealsoincludedintheaggregatesbuttheirconcentrationisrathersmall.Theaggregatesmayalsobeformedduringacetogenesisorevenhydrolysisbutsuchaggregatesarenotstableanddisruptquicklywhennotfed.Atwostageprocessseemstobesuitablewhenhighconcentratedsolidw
8、astemustbetreated.Specialconditionsarenecessarytopromoteaggregateformationfrommethanogenicbacteriabutaggregatesoncefo
