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UASB反应器处理PTA废水的启动及污泥特性分析.docx

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UASB反应器处理PTA废水的启动及污泥特性分析 Title:Start-upandSludgeCharacterizationofUASBReactorfortheTreatmentofPTAWastewater Abstract: Theaimofthisstudywastoinvestigatethestart-upprocessandsludgecharacteristicsofanUpflowAnaerobicSludgeBlanket(UASB)reactorusedforthetreatmentofpurifiedterephthalicacid(PTA)wastewater.Thestart-upperiodinvolvedtheoptimizationofoperatingconditionsandtheacclimationofanaerobicmicroorganismstoefficientlydegradethecomplexorganiccompoundspresentinthewastewater.Additionally,thesludgepropertieswereanalyzedtounderstandthemicrobialcommunitystructureandoverallperformanceofthereactor.TheresultsshowedthattheUASBreactordemonstratedsuccessfulstart-upandachievedsatisfactorytreatmentefficiencyforPTAwastewater. 1.Introduction Purifiedterephthalicacid(PTA)isawidelyusedchemicalintheproductionofpolyesterfibers,films,andresins.However,theproductionofPTAgenerateslargevolumesofwastewatercontaminatedwithorganiccompoundsthatarechallengingtotreat.TheUASBreactorhasbeenrecognizedasaneffectiveandeconomicaltechnologyfortheanaerobictreatmentofvariousindustrialwastewaters.Thisstudyaimstoinvestigatethestart-upprocessandsludgecharacteristicsofaUASBreactorforPTAwastewatertreatment. 2.MaterialsandMethods 2.1UASBReactorDesignandOperation 2.2Start-upProcedureandOptimization 2.3SludgeSamplingandCharacterization 2.4AnalyticalTechniques 3.ResultsandDiscussion 3.1Start-upProcess Thestart-upphaseinvolvedtheoptimizationofvariousoperationalparameterssuchashydraulicretentiontime(HRT),organicloadingrate(OLR),andpH.ItwasobservedthatagraduallyincreasingOLRledtothedevelopmentofastableandefficientmicrobialcommunitycapableofdegradingPTAwastewater.ApproximatelyXdayswererequiredforthereactortoachievesteady-stateoperation. 3.2PerformanceEvaluation TheUASBreactorwasevaluatedintermsofitsremovalefficiencyforkeyparameterssuchaschemicaloxygendemand(COD)andtotalsuspendedsolids(TSS).TheaverageCODremovalefficiencyexceededX%,demonstratingtheeffectivenessoftheUASBreactorforPTAwastewatertreatment. 3.3SludgeCharacterizat