AOMBBR工艺处理制革废水的研究

313Vol.31,No.320106JournalofHebeiUniversityofScienceandTechnologyJune2010:1008-1542(2010)03-0274-04A/O-MBBR吴巍,张洪林(辽宁石油化工大学环境与生物工程学院,辽宁抚顺113001):介绍了A/O-MBBR工艺对制革废水的进一步处理,考察了废水的有机物处理效果及氨氮(NH3-N)的处理效果实验结果表明,当填料填充比例为60%时,有机物的处理效果:随着水力停留时间(HRT)的延长,COD去除率增加,当HRT达12h时COD去除率达到92%;在HRT为12h时,随着进水COD质量浓度增加,COD去除率增加,在400mgL-1时达到95%,之后随COD质量浓度的继续增大其去除率有所下降氨氮的处理效果:随着HRT的逐渐增大,氨氮质量浓度不断降低,在HRT为12h时,出水氨氮质量浓度小于1.5mgL-1;氨氮去除率随进水COD质量浓度变大呈上升趋势,COD质量浓度在400mgL-1时氨氮去除率达到98%:A/O-MBBR工艺;制革废水;水力停留时间:X703:AA/O-MBBRprocessfortreatmentoftannerywastewaterWUWei,ZHANGHong-lin(CollegeofEnvironmentandBioengineering,LiaoningShihuaUniversity,FushunLiaoning113001,China)Abstract:ThispaperintroducedtheA/O-MBBRprocessontannerywastewaterforfurtherprocessing,examinedtheeffectofwastewaterorganicmatterandammonianitrogentreatmenteffect.Theresultsshowthatwhenthefillerfillingratiois60%,thetreatmenteffectoforganicmatterimproveswiththeHRTextension.WhentheHRTisupto12h,CODremovalratereaches92%;andwhentheHRTis12h,withtheincreaseofinfluentCODconcentration,CODremovalrateincreases,95%atthe400mgL-1,latertheremovalratedecreaseswhenCODconcentrationcontinuestoincrease.Theeffectsofammoniatreat-mentarethatammonianitrogenconcentrationdecreaseswiththeextensionofHRT;whentheHRTis12h,theeffluentam-moniaconcentration1.5mgL-1;NH3-NremovalrateriseswiththeinfluentCODgettinglarger;whenCODconcentrationis400mgL-1itcanreach98%.Keywords:A/O-MBBRprocess;tannerywastewater;hydraulicretentiontime:2009-11-19;:2010-03-11;::(1984-),,,,:,A/O,(MBBR)[1]MBBRBOD,COD,SS,,A/O-MBBR,A/OMBBR,,(NH3-N)[2]COD,SS,A/O-MBBR,11.1,11.2表1废水水质Tab.1Waterqualityofwastewater(COD)(NH3-N)(SS)pH175~300110~19080~1107.3~7.9:pH,mgL-1COD:(CODCODcr);NH3-N:;pH:pH;SS:;DO:;1.31图1A/O-MBBR工艺流程图Fig.1FlowsheetofA/O-MBBRprocessA/O,,[3]20cm20cm50cm,,,100%MBBR,(1),,80cm,35cm,45L,45%1.4MBBR,2,,[4],,,2表2填料的技术参数Tab.2Technicalparametersofcarrierelements/mm/(m2m-3)/%2550090图2MBBR系统填料实物图Fig.2CarrierelementsofMBBR1.55025mgL-1[6-7],,15d,[8],7d,1~2cm,[9-11],[12]220~25,pH7.3~7.9,NH3-N2.1MBBRCOD260mgL-1,(HRT)24h,,33,,COD55%,COD92.4%,,COD55%2.2HRTHRT,HRTCOD,44,HRT,COD;HRT12hCOD92%,2753A/O-MBBR(COD)20mgL-1,HRT12h18h,COD2%2.3CODHRT12h,COD100~600mgL-1,COD55,(COD)400mgL-1,CODCOD,COD400mgL-1,COD96.2%(COD)400mgL-1,COD2.4HRTNH3-NCOD250mgL-1,NH3-N130mgL-1HRT,NH3-N66,HRT,NH3-N,HRT12h,(NH3-N)1.5mgL-1,2.5CODNH3-NNH3-N130mgL-1,NH3-NCOD77,NH3-NCOD,COD400mgL-198%COD250~600mgL-1,NH3-N90%A/O-MBBR2762010图7进水COD质量浓度对NH3-N去除效果的影响Fig.7EffectofinfluentCODconcentrationonNH3-Nremovalefficiency31):55%,HRT,COD,HRT12hCOD92.4%;HRT12h,COD,COD,COD400mgL-1COD96.2%,CODCOD2)NH3-N:55%,NH3-NHRT,HRT12h1.5mgL-1;NH3-NCOD,COD400mgL-1NH3-N98%3),COD250~600mgL-1,NH3-N90%,A/O-MBBRA/O,MBBRA/O-MBBR,,:[1].[J].(IndustrialWaterTreatment),2004,24(2):12-15.[2].[M].:,2002.[3].A/O[J].(WaterPurificationTechnology),2007,26(5):49-51.[4]RUSTENB,HELLSTROMBG,HELLSTROMF,etal.PilottestingandpreliminarydesignofmovingbedbiofilmreactorsfornitrogenremovalattheFREVARwastewatertreatmentplant[J].WatSciandTech,2000,41(4/5):13-20.[5].[M].4.:,2002.[6],,,.MBBR[J].(ChinaWaterSupplyandDrainage),2005,21(1):49-52.[7]SUVILAMPIJ,LEHTOMAKIA,RINTALAJ.Comparisonoflaboratory-scalethermophilicbiofilmandactivatedsludgeprocessesinte-gratedwithamesophilicactivatedsludgeprocess[J].BioresourceTechnology,2003,88(3):207-214.[8]./[J].(ChinaWaterSupplyandDrainage),2006,23:14-18.[9],,.[J].(JournalofHebeiUniversityofScienceandTechnology),2009,30(3):257-261.[10],,,.[J].(EnvironmentalScience),2003,23(6):742-747.[11]BERNETN,DELGENESN,AKUNNAC,etal.Anaerobicaero-bicSBRforthetreatmentofpiggerywastewater[J].WatRes,1999,34(2):611-619.[12]CHENS,SUNDZ,CHUNGJS.Treatmentofpesticidewastewaterbymoving-bedbiofilmreactoreombinedwithFenton-coagulationpretreatment[J].JournalofHazardousMa-terials,2007,144:577-584.[13],.[J].(JournalofHebeiUniversityofScienceandTech-nology),2009,30(4):362-364.2773A/O-MBBR