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高硫酸盐高COD废水的厌氧处理研究.docx

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高硫酸盐高COD废水的厌氧处理研究 Title:AnaerobicTreatmentofHighSulfateandHighCODWastewater:AResearchReview Abstract: Highsulfateandhighchemicaloxygendemand(COD)wastewateriscommonlyfoundinvariousindustrialprocesses,suchasmining,petrochemical,andpulpandpaperindustries.Thedischargeofsuchwastewaterwithoutpropertreatmentcanleadtoenvironmentalpollutionandposeathreattoaquaticlife.AnaerobictreatmenthasbeenrecognizedasaneffectiveandsustainableapproachfortheremovalofsulfateandCODfromwastewater.ThispaperpresentsacomprehensivereviewontherecentadvancementsinanaerobictreatmenttechniquesforhighsulfateandhighCODwastewater.Ithighlightsthemainfactorsaffectingthetreatmentefficiency,exploresvariousreactorconfigurations,andexaminestheimpactofoperationalparametersontheperformanceofanaerobictreatmentsystems.Additionally,thekeychallengesandfutureperspectivesofanaerobictreatmentforhighsulfateandhighCODwastewaterarediscussed. 1.Introduction: HighsulfateandhighCODwastewaterischaracterizedbyitscomplexityandthepresenceofmultiplepollutants.Itisimportanttodevelopefficienttreatmenttechnologiestoalleviatethenegativeimpactsassociatedwiththistypeofwastewaterdischarge.Theanaerobictreatmentprocessoffersseveraladvantages,suchasenergyrecovery,reducedsludgeproduction,andreliableremovalofsulfateandCOD.Thispaperaimstoanalyzetherecentresearcheffortsinthisfieldandprovideinsightsintothecurrentstate-of-the-artinanaerobictreatmentforhighsulfateandhighCODwastewater. 2.FactorsAffectingTreatmentEfficiency: VariousfactorsinfluencetheperformanceofanaerobictreatmentsystemsforhighsulfateandhighCODwastewater.Theseincludeorganicloadingrate,hydraulicretentiontime,temperature,pH,andreactorconfiguration.Theinterplayofthesefactorsdeterminestheoverallefficiencyofthetreatmentprocess. 3.ReactorConfigurations: Severalreactorconfigurationshavebeendevelopedandappliedforanaerobictreatment,suchasupflowanaerobicsludgeblanket(UASB)reactors,expandedgranularsludgebed(EGSB)reactors,anaerobicsequencingbatchreactors(ASBR),andanaerobicmembranebioreactors(