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:02532468(2000)06080103:X131.2:A陈元彩,肖锦,詹怀宇,王杰(,510640):,GCMS,pH,.:;;StudyonthedechlorinationmechanismduringanaerobictreatmentofpulpbleacheryeffluentCHENYuancai,XAOJin,ZHANHuaiyu,WANGJie(StateKeyLaboratoryofPulp&PaperEngineering,SouthChinaUniversityofTechnology,Guangzhou510640)Abstr0act:ReductivedechlorinationmechanismswasconfirmedthroughGCMSanalysisduringanaerobictreatmentofpulpbleacheryeffluent.TheinfluenceofsulfidebiologicallyproducedandpHonthedechlorinationrevealedthatnucleophilicsubstitutionandalkalinehydrolysiswerealsononbiologicalmechanism.Keywords:pulpbleacheryeffluents;anaerobictreatment;dechlorinationmechanism:19990903;:20000313:(99284):(1967),,()50,(),,,,.,,.,20000.5kg/t(),20050.1kg/t(),BritishColumbiaOntarioAOX.(GB354492)AOX1.5kg/t().[1-2].,,,,,,,.,,.11.1206200011ACTASCIENTIAECIRCUMSTANTIAEVol.20,No.6Nov.,2000CEH,[3].pHpHS-3C;;CODCr;Schoniger[4]AOX;:0.45m,752CPPA;PelliconCasstte!,0.45m,1kD,1.8MPa;:HP58905972,:HP5,:70KPa,He:1mL/min,:80∀5min,4∀/min290∀,30min,:EI50eV,1500V,:50550amu,WILEY.1.2:,,150mL,,100mL,,,3gVSS/L,pH6.8,.22.11pHAOXFig.1EffectofpHonremovalofAOXpHS2-AOX.AOX,1.80mg/L.2Fig.2EffectofS2-onremovalofCl-1:CaONa2CO3pH,,pH,,AOX,AOX,pH7,,AOX15%.,HS-S2-,OH-HS-S2-.,FeCl2,FeS,,.,,,.,,,,HS-S2-,FeS.1,,,.,,HS-S2-,.2,.2.280220,,0.4mL,.1GCMSTable1GCMSanalysisofeffluentsinanaerobictreatment,min,%,min,%9.122,415.966.16418.3410.112.049.122,43.8514.602,4,625.8810.156.2818.784,56.6012.891H3.4321.893,4,51.4014.602,4,61.0525.472,411.4315.0227.2327.492#,3,43.8315.9261H4.3332.10810H32.8217.1110.7733.12845.3117.403.9635.40426.8522.311.2037.37210H33.3227.381.0032.455.5644.401,2,(2)0.1955.94681.01,,,,,,,,,,.,2,4,6,,,,,..3CEH,,HS-S2-,.:[1]FitzsimmonsR,etal.Anaerobicdechlorination/degradationofchlorinatedorganiccompoundsofdifferentmolecularmassesinbleachplanteffluents[J].EnvirSciTech,1990,24:17441748[2]HakulinenRetal.Treatmentofpulpandpaperindustrywastewatersinananaerobicfluidizedbedreactor[M].ProcBiochem.1982.1222[3],.[J].,2000,20(5):660662[4]BengtE,etal.Determinationofinorganicchlorinecompoundsandtotalchlorineinspentbleachingliquors[J].SvenskPapersidning,1976,17:5708036: