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3312006JOURNALOFBEIJINGUNIVERSITYOFCHEMICALTECHNOLOGYVol.33,No.12006PVF123232(11,100029;21,102617;31,100029):,(PVF),,,PVF,COD95%,80%8%PVFCODCODNH+42N20,(SND):;;PVF;:TQ32819:2005204208:,1982,3E2mail:luxiaozhong@bipt.edu.cn(MBBR)[122],,,,[325];,,,(PVA)(PVF),,,,1PVF111,1788,;,,;,95%,;,;,37%,,112PVF,11211100mL(10%),10mL,1g,20mL,0,315,10,1215g1121260,10mL,,10min11213,6510h,,113,,,PVF10mm,,,,,,1(ASTMD792)1,,60%,,,,,,,3%8%,PVF,2#3#,1PVFTable1PerformancesofthePVFfoamcarriers1#2#3#4#5#/%0381012/(g/cm3)018201801850188019/%50606050302211,10cm,50cm,415L,1,2#3#1Fig.1Schematicofexperimentsetup212CODNH+42N400900mg/L1550mg/L213[6],2;,N2(12)2;,;COD,COD21430%(30%),315g/L(MLSS),,(DO)210mg/L,,20,5hKH2PO4,mCODmNmP=10051COD1000mg/L,NaHCO3pH,,,10%,,COD450mg/L,1,,3311CODCOD22,2CODFig.2CODchangedwithtimetreatedbytwokindsofmediumsCOD,80%,COD95%,3#,,,,COD731:PVF3123(1050mg/L),10303NH+42NFig.3NH+42Nconcentrationchangedwithtimetreatedbytwokindsofmediums4NO32N,NO22NFig.4NO32NandNO22NconcentrationchangedwithNH+42Ntreatedbytwokindsofmediumsmg/L,DOMLSS,2#85%,3#,78%,,3#2#,,,(SND),3#430mg/L,[729],011110mg/L,10150mg/L,,,3#2#,3#313C/NCODNH+42NC/N[10],3C/N,(mCODmNmP=10051),(SND),C/NCOD,C/N20,COD,C/N10,COD,,,C/N30,COD,,C/N20314PVF,33CN1478891A[11],[5],,COD(COD6015mg/L),PVF,,,,,,8320062C/NTable2TestresultsunderdifferentC/Nvalueconditions2#3#C/N=102030102030COD/(mg/L)433129569143687191433129569143687191COD(mg/L)9140217821191551763212135189COD/%989997879494NH+42N/(mg/L)431952611224151431952611224151NH+42N/(mg/L)416051884124816481946123NH+42N/%908083807075NO-22N/(mg/L)010501190129010501190129NO-22N/(mg/L)017001330149012701300140NO-32N/(mg/L)413561654152413561654152NO-32N/(mg/L)15172410451181184218031183Table3Comparisonofremovaleffectsfordifferentkindsofcarriers2#PVF3#PVF/%30293030/h46655COD/(mg/L)548318554554COD(mg/L)6235347COD/%8817881993199817NH+42N/(mg/L)28452828NH+42N/(mg/L)81546NH+42N/%7114661785177816315,,(SND),,,3#2#,,,,8%PVF,,,,,PE20[12],PVF,PVF,,,41)2#3#,COD95%,3#COD2)2#80%,3#78%,2#,3)C/N20,4)PVF,3#,,PVF8%[1]WangJianlong.Wastewatertreatmentbyahybridbio2logicalreactor(HBR):effectofloadingrates[J].ProcessBiochemistry,2000,36:297-303.[2],.[J].,2003,29(4):13-15.931:PVF[3].[J].,1994,16(4):13-16.[4],.[J].,1999,21(2):42-44.[5],,.[J].,2002,22(3):333-337.[6].[M]..:,2002,258-284.[7],,,.[J].,2000,32(1):1-4.[8]MariYanagida.Microbialpopulationdistributioninporouscarrierinfludized2bedbioreactorforsimultaneousremovalofcarbonaceousandnitrogenouscompounds:nu2mericalsimulationbasedonexperimentaldistributions[C].Beijing:Asia2PacificBiochemicalEngineeringConference,1997,1085-1088.[9]YiFan.Simultaneousnitrificationanddenitrificationinabubblecolumnwithporouscarrierparticles[C].Bei2jing:ProceedingsofCUCHE23,2000,8-12.[10]XingXinhui.EffectofC/Nvaluesonmicrobialsimulta2neousremovalofcarbonaceousandnitrogenoussub2stancesinwastewaterbysingle[J].BiochemicalEngi2neeringJournal,2000,5(1):29-37.[11],,,.[P].,02141723.7,2002208230.[12],,,.[J].,2003,19(5):39-41.PreparationofsuspendedcarrierPVF(polyvinylalcohol2formaldehyde)foamsanditsperformancesinwastewatertreatmentLIUYu2hang1LUXiao2zhong2ZHAOMing2HUXiang3SUNXiao2min2(11CollegeofMaterialsScienceandEngineering,BeijingUniversityofChemicalTechnology,Beijing100029;21FacultyofMaterialsandChemicalEngineering,BeijingInstituteofPetrochemicalTechnology,Beijing102617;31CollegeofChemicalEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:Anewkindofporouspolymercarriers,activePVFfoam,waspreparedinthispaper.ThePVFcarri2ershavealargespecificsurfaceareaandanexcellentcompatibilitytothemicrobes.Andtheirspecificgravityisneartowater,andtheycanprovidehabitattoaccreteandgrowformicroorganismintheMovingBedBiofilmReactorProcess(MBBR).ItwasshownthattheremovalratesofCODandNH+42Nwereabout95%and80%,respectivelywhentwokindsofPVFcarrierswereusedtotreatthesimulativesanitarysewageintheHybridBi2ologyicalReactor,withprominentlyapplication.Underthesameprocessconditions,thePVFcarrierswhosecontentofactivecarbonis8%hadmorepreferableremovalrateofCOD,andthedenitrificationeffectwasmoreperfectly.WhentheconcentrationratioC/NofCODtoNH+42Nwas20andtheDOconcentrationwas210212mg/L,SNDinMBBRwasmostamiabletooccure.Keywords:movingbedbiofilmreactorprocess;porouscarrier;PVFfoams;simultaneousnitrificationanddeni2trification042006