CAAC工艺处理模拟大豆深加工废水厌氧出水付伟超

23720107ResearchofEnvironmentalSciencesVol.23No.7July2010CAAC121212*1.8320032.100081－AACMBBR－CAAC..HRT≥1.3dρCODCr50mg/LCODCr95%ρMLSS0～15mg/L.301d10.157131.4%.－X703A1001－6929201007－0964－06TreatmentofAnaerobicEffluentsfromSyntheticSoybeanDeepProcessingWastewaterbyContinuousAerobic-anaerobicCoupledProcessFUWei-chao1WUShi-han2ZHUYi1LIXiao-xia2WANGJin-mei1LIChun21.KeyLaboratoryforGreenProcessingofChemicalEngineeringofXinjiangBingtuanCollegeofFoodScienceShiheziUniversityShihezi832003China2.DepartmentofBiologicalEngineeringSchoolofLifeScienceBeijingInstituteofTechnologyBeijing100081ChinaAbstractTomeetthedemandsofthetreatmentofwastewaterfromthesoybeanfurtherprocessingindustryacontinuousaerobic-anaerobiccoupledCAACprocesscomposedofmovingbedbiofilmreactorMBBRandAACreactorwasdesigned.TheCAACprocessachievedcontaminationremovalandexcesssludgereductionofanaerobiceffluentsfromsyntheticsoybeandeepprocessingwastewaterthroughchangingenvironmentalconditionsindifferentreactorsalongtheflowofthestream.WhenthehydraulicretentiontimeHRTwaslongerthanorequalto1.3dρCODCrwasbelow50mg/LintheeffluentandtheremovalrateofCODCrreached95%.ρMLSSintheeffluentwascontrolledbetween0-15mg/Lstably.During301daysofcontinuousoperationadischargingsludgewascompletedandtheobservedyieldofsludgewas0.1571whichwasonly31.4%thatoftheactivatedsludgeprocess.TheCAACprocessshowedexcellentexcesssludgereduction.Keywordswastewatertreatmentexcesssludgereductioncontinuousaerobic-anaerob[e-mail].*1970－、[e-mail]、BOD5CODCrρCODCr5000～20000mg/L1.ABR、UASBIC2-3.ρNH4+-N40～50mg/LρCODCr1200～1500mg/L24-5.、.40%～60%6-7..MovingBedBiofilmDOI10.13198/j.res.2010.07.107.fuwch.0097CAACReactorMBBR、、、、、8.－Aerobic-AnaerobicCoupledAAC9CODCr93.08%BOD595.81%SS98%《》GB18918—2002〔ρCODCrρBOD5ρSS1003030mg/L〕1a10-11.MBBRAAC－ContinuousAerobic-AnaerobicCoupledCAAC.CAACMBBRAAC.11.1CAACMBBRAAC128.89L.MBBR8.19LBioMTM30%1AAC20.7L231234.MBBR1MBBRAAC2344..AAC3～5cm50%～60%10%～30%10.23100%480%.CAACρDO2.21ρDO4.4～4.8mg/L20～0.6mg/L30～0.2mg/L43.4～3.5mg/L.CAACpH3.1—MBBR2—3—4—1Fig.1Experimentalsetupflowchart1BioMTMTable1MaintechnicalparametersofBioMTMcarrier/mm/mm/mm/kg/m3/m2/m310100.70.96～0.9812002ρDOFig.2DOmassconcentrationsindifferentzones3pHFig.3pHindifferentzones1.2CAACC6H12O6NH42SO42.569232Table2Thecompositionandcharacteristicsofsimulatedwastewaterρ/mg/LCODCrTNTPpH1500～200045～5045～507.0～7.5ρCODCrρTNρTPρMLSSρNH4+-NρDOJPBJ－608DOpH－DELTA320pH12.1.3CAAC.MBBR13.2.6ρCODCr120mg/LNH4+-NρNH4+-N.NH4+-N14141.21NH4+-N70%.1NH4+-N1597%CAACNH4+-N91%.22.1HRTCODCr4、HRTCAACCODCr.4ρCODCr1500～2000mg/LρCODCr100mg/L.15HRT2.1d1.8d271.5d321.3d.HRTCODCr.4HRT1.3dCODCrHRT1.0dCODCr87.8%ρCODCr150mg/L.4CAACCODCrFig.4RemovalefficiencyofCODCrinCAACprocessCAACCODCr－.1CODCr50%～70%.12.pH3232、153pH.234ρCODCr8%～13%ρCODCr.2.2CODCrNH4+-N518.5℃CODCrNH4+-N95%85%6697CAACρCODCrρNH4+-N507.5mg/L.14.5℃CODCr89%NH4+-N70%ρCODCrρNH4+-N12016mg/L.CODCrNH4+-N20～30℃1618.5℃NH4+-N.5CODCrNH4+-NFig.5CODCrandNH4+-Nremovalratesunderdifferenttemperature2.36CAACCODCr.6CODCr0.90kg/m3·d1.54kg/m3·dCODCr87%.2.4CAAC17TP17TPρTP.17.1723TP.17-18.CAACCHU19.6CODCrFig.6CODCrremovalratesunderdifferentorganicloadings2.5CAACρMLSS609.74g274.33gρMLSS15mg/L301dBOD54921.65g95%0.1571.CAAC200.4～0.631.4%.7CAACρMLSS.7123ρMLSS18.ρMLSSFood-to-Microorganism76923RatioF/MρMLSS.ρMLSSF/M20ρMLSS.CAACHRT、、.7301dρMLSSFig.7ChangeofρMLSSindifferentzonesduringthe301-daycontinuousoperation7ρMLSS15mg/L《》GB18918—2002B211234480%4ρMLSS.ρMLSS.3a.CODCrCAAC.HRT≥1.3d18.5℃CODCr95%ρCODCr50mg/LCODCr.b.CAACMBBRAAC、－.ρMLSS15mg/L《》GB18918—2002B.c.CAAC0.15710.4～0.631.4%.d..References1.J.200632168-71.2.J.200733660-62.3.J.20014190-194.4ZHUGFLIJZWUAPetal.TheperformanceandphaseseparatedcharacteristicsofananaerobicbaffledreactortreatingsoybeanproteinprocessingwastewaterJ.BioresourceTechnology200899178027-8033.5LUOSTARINENSLUSTESVALENTINLetal.Nitrogenremovalfromon-sitetreatedanaerobiceffluentsusingintermittentlyaeratedmovingbedbiofilmreactorsatlowtemperaturesJ.WaterRes20064081607-1615.6WEIYSVANHOUTENRTBORGERARetal.MinimizationofexcesssludgeproductionforbiologicalwastewatertreatmentJ.WaterRes200337184453-4467.7ANDREOTTOLAGFOLADORIP.AreviewandassessmentofemergingtechnologiesfortheminimizationofexcesssludgeproductioninwastewatertreatmentplantsJ.JournalofEnvironmentalScienceandHealthPartAToxic/HazardousSubstances＆EnvironmentalEngineering20064191853-1872.8GAPESDJKELLERJ.ImpactofoxygenmasstransferonnitrificationreactionsinsuspendedcarrierreactorbiofilmsJ.ProcessBiochemistry200944143-53.9.J.200624126-29.10.－J.200657122970-2974.11.AACJ.20096082067-2073.12.M.4.2002.8697CAAC13.J.19928313-17.14.J.1999273351-354.15.J.20092291056-1062.16.M.2001.17.J.20083497-9.18.、、J.2009225540-543.19CHULBWANGJLWANGBetal.ChangesinbiomassactivityandcharacteristicsofactivatedsludgeexposedtolowozonedoseJ.Chemosphere2009772269-272.20LOWEWCHASEHA.TheeffectofmaintenanceenergyrequirementsonbiomassproductionduringwastewatertreatmentJ.WaterRes1999333847-853.21.GB18918—2002S.2002.969