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1、War.Res.Vol.29,No.6,pp.1483-1490,1995~Pergamon0043-1354(94)00303-3Copyright~c;1995ElsevierScienceLtdPrintedinGreatBritain.Allrightsreserved0043-1354/95$9.50+0.00TREATMENTOFCLAMPROCESSINGWASTEWATERSBYMEANSOFUPFLOWANAEROBICSLUDGEBLANKETTECHNOLOGYGREGORYD.BO
2、ARDMANI*@,JESSIL.TISINGER2andDANIELL.GALLAGHERItDepartmentofCivilEngineering,VPI&SU,Blacksburg,VA24061and2SybronChemicalsInc.,Salem,Virginia,U.S.A.(FirstreceivedDecember19937acceptedinrevisedformOctober1994)Abstract--Theabilityofupflowanaerobicsludgeblank
3、et(UASB)technologytotreatwastewatersfromamechanicalshucking,clamprocessingfacilitywasevaluated.Bothbatchandcontinuousflowstudieswereperformedatapprox.3UCtoevaluatetheeffectsofvaryingorganicloadingrate(OLR),hydraulicresidencetime(HRT),NaCIlevel,andnutrient
4、additions.Amongtheparametersmeasuredwerebio-chemicaloxygendemand(BOD5),chemicaloxygendemand(COD),totalsuspendedsolids(TSS),variousnutrientsandgasproduction.TheUASBsystemprovedtobeeffective,accomplishingsolubleBOD5,solubleCOD,andTSSremovalsof87,83and83%,re
5、spectively,underthebestconditionsconsidered(averageOLR=13.8gCOD/I/dandaverageHRT=3h).Theaverageconversionofwastewaterorganicstomethanewasintheareaof80%o.Sodiumlevelsatandabout5250mg/1significantlyimpactedontheperformanceoftheUASB.Keywords--anaerobictreatm
6、ent,upflowanaerobicsludgeblanket(UASB),clamprocessingwastewaters,organicloadingrate,salttoxicityINTRODUCTION(1991)andSchneideretal.(1988).ThebasicfeatureofUASBsystemsisthatwastetravelsup-flowAnaerobictreatmentofwasteshasbeenpracticedthroughabedofgranulate
7、dsludge.Granulationofformanyyears,inmanydifferentconfigurationsandthesludgeisgenerallyregardedastheweaklinkinmodesofoperation(McCarty,1982).Thehigh-ratestartingaUASBsystem,so,inmanycases,granularsystemsinusetodayusuallyoperateatmesophilicsludgefromanother
8、facilityisintroducedtoreduce(25-35°C)orthermophilic(45-65°C)temperatures,start-uptimes,oftentolessthanaday(Maatandandoftenhavehydraulicretentiontimes(HRT)lessHabets,1987).Thestart-uptimereportedbyGoodwinthan20h(Maat
