MBBRBAF工艺降解腈类有机物的性能研究夏凡

4　12环境工程学报Vol.4,No.12201012ChineseJournalofEnvironmentalEngineeringDec.2010MBBR/BAF夏　凡　梅　凯　陆　曦　佘步存(,210009)　　(MBBR)(BAF),。2,R=200%,pH=7.5,HRT=3d,COD、CN-、NH3-N、TNBOD53024、38、185、305845mg/L,COD、CN-、NH3-N、TNBOD550、0.5、10、4517mg/L,98.2%、98.7%、94.2%、85.2%98.0%,BOD/COD0.290.34,《》(DB32/939-2006)。　　(MBBR)　(BAF)　X703　　　A　　　1673-9108(2010)12-2819-04StudyontheperformanceofdegradationoforganicnitrileusingMBBR/BAFtechnologyXiaFan　MeiKai　LuXi　SheBucun(CollegeofEnvironment,NanjingUniversityofTechnology,Nanjing210009,China)Abstract　Asmall-scaleexperimentalstudyonnitrilewastewaterremovalusingacombinationprocessofmovingbedbiofilmreactor(MBBR)andbiologicalaeratedfilter(BAF)wascarriedouttoinvestigatethedegra-dationlawoforganicnitrile.Afterrunningfor2monthssteadily,fortwo-stagenitrificationliquidrefluxrateR=200%,pH=7.5andHRT=3d,whentheaverageconcentrationsofCOD,CN-,NH3-N,TNandBOD5ofin-fluentwere3024,38,185,305and845mg/L,respectively,theiraverageconcentrationsofeffluentwere50,0.5,10,45and17mg/L,respectively.Andtheirremovalefficiencieswere98.2%,98.7%,94.2%,85.2%and98.0%,respectively.TheratioofBOD/CODrosefrom0.29to0.34,andtheeffluentcouldmeettheStandard(Grade-1)ofJiangsuProvinceChemicalIndustryMajorWaterPollutionDischarge(DB32/939-2006).Keywords　organicnirtrile;movingbedbiofilmreactor(MBBR);biologicalaerationfilter(BAF):2009-10-29;:2010-04-20:(1984～),,,:。E-mail:[e-mail]　　R-CN。,。,(100～200℃)(),,[1],[2]。(),、MX-CP[3]。[4-7],、[8]。Leite[9]、Gong[10]MABR+。,[8]。,,(moving-bedbiofilmreactor,MBBR)、(biologicalaeratedfilter,BAF),,,,、[11-13]。,,。41　1.1　1。MBBRBAF。MBBR,,55cm×12cm×50cm,30L;63cm×12cm×40cm,31L;,Υ11cm×140cm(),13L。10～20L/d、MBBR15～20L/min,BAF1～2L/min。、MBBR,0.96～0.99g/cm3,300m2/m3,300m2/m3。BAF:,,,,,;BAF,、。(47,)1　Fig.1　Schematicdiagramofexperimentalsystem1.2　(COD、、),,pH7.0。KH2PO4、。1。1　Table1　CharacteristicsofwastewaterqualityCOD(mg/L)BOD5(mg/L)BOD5/CODCN-(mg/L)pH(mg/L)TN(mg/L)2200～3780800～9000.27～0.3530～5010～11150～200300～45030248450.2938101853051.3　[14]:COD;BOD5;NH3-N;MLSS、MLVSS;DO、,DO;,;pH,pH。1.4　:1,2,3MBBR,4,5,6,7,8。282012　:MBBR/BAF2　2.1　pHCOD,pH,pH,3dCOD2,pH=6.5,7.5,9COD,33d,200%。2　pHFig2　OrganicmatterdegradationatdifferentreactionpHalongthereactionprocess2,3pHCOD,COD。pH=6.5,COD3175.6mg/L,COD52.7mg/L,COD98.3%;pH=7.5,COD3340.9mg/L,COD68.1mg/L,COD98.0%;pH=9,COD3733.4mg/L,COD80.1mg/L,COD97.9%。,CODMBBR,90%,pH=6.5～9.0,MBBR/BAFCOD,97.5%。、,,pH=7.5pH。2.2　,MBBR+BAFCOD。3,3dCOD。3,,MB-3　Fig3　OrganicmatterdegradationatdifferentrefluxratiosalongthereactionprocessBR/BAFCOD,-。12,MBBR,10.64%0.84%。.13,,COD192.3%96.2%。3COD1720mg/L,252mg/L168mg/L。,A/MBBRCOD。2.3　HRT,MBBR/BAFCOD。,3dCOD。4　HRTFig.4　OrganicmatterdegradationatdifferentHRTsalongthereactionprocess4,COD,,、,28214。,,,。,,,。、,,2dMBBR/BAF。2.4　,2,MBBR/BAF200%,pH=7.5,HRT=3d,COD50mg/L,98.2%;BOD17mg/L,B/C0.34;10mg/L,94.2%;CN-0.5mg/L,TN45mg/L,《》DB32/939-2006,COD5。5　CODFig5　CODremovaleffectsduringlong-termoperation3　　、pH、(HRT),200%,pH=7.5,HRT=3d,COD50mg/L,98.2%,BOD17mg/L,B/C0.34,94.2%,CN-0.5mg/L,TN45mg/L,《　》(DB32/939-2006)。MBBR/BAF。[1]..:,2002.68-70[2]..:,1998.134-135[3]..,1994,16(3):58-59[4]..,2002,29(3):43-44[5]..,2007,28(1):29-30[6],,..,2001,31(6):36-37[7],,,..,2007,5(4):210-212[8]JoanneBaxter,SteohenP.Cummings.Thecurrentandfu-tureapplicationsofmicro-organisminthebioremediationofcyanidecontamination.AntonievanLeeuwenhoek,2006,90(1):1-17[9]LeiteJ.A.C.,FernandesB.S.,PozziE.,etal.Applica-tionofananaerobicpacked-bedbioreactorfortheproduc-tionofhydrogenandorganicacids.InternationalJournalofHydrogenEnergy,2008,33(2):579-586[10]GongZ.,YangF.L.,FurukawaK.J.Feasibilityofamem-brane-aeratedbiofilmreactortoachievesingle-stageauto-trophicnitrogenremovalbasedonAnammox.Chemo-sphere,2007,69(5):776-784[11]ValdiviaA.,Gonzalez-MartinezS.,WildererP.A.Bio-logicalnitrogenremovalwiththreedifferentSBBR.WaterScienceandTechnology,2007,55(7):245-254[12]ComettI.,Gonzalez-MartinezS.,WildererP.Treatmentofleachatefromtheanaerobicfermentationofsolidwastesusingtwobiofilmsupportmedia.WaterScienceandTech-nology,2004,49(11-12):287-294[13]RostronW.M.,StuckeyD.C.,YoungA.A.Nitrificationofhighstrengthammoniawastewaters:Comparativestudyofimmobilisationmedia.WaterResearch,2001,35(5):1169-1178[14]《》.(4).:,20022822