您好,欢迎访问三七文档
当前位置:首页 > 行业资料 > 其它行业文档 > PAC对膜生物反应器过滤性能的影响曹占平
EffectofpowderedactivatedcarbononfiltrationperformanceofthemembranebioreactorCaoZhanping1,ZhangJingli2,ZhangHongwei1(1.KeyLaboratoryHollowFiberMembraneMaterialandMembraneProcessoftheSectionofEducation,TianjinUniversityofPolytechnic,Tianjin300160,China;2.EnvironmentalandMunicipalEngineeringDepartment,TianjinInstituteofUrbanConstruction,Tianjin300384,China)1,2,1(1.,300160;2.,300384)[],,(1,2500mg/L)。,21.5,。1μm,。,。[];;;[]X505[]A[]1005-829X(2008)10-0017-04Abstract:Inordertostudytheeffectofpowderedactivatedcarbon(PAC)onmembranefiltrationresistanceinthemembranebioreactor(MBR),thecomparisonoffiltrationperformanceoftwogroupsofMBR(powderedactivatedcarbonisnotaddedtoreactorNo.1,500mg/LofpowderedactivatedcarbonisaddedtoreactorNo.2)havebeenconductedunderthesameinfluentwaterandsameoperatingconditions.Theaddingofactivatedcarboncanprolongthefiltrationcycleofthereactorby1.5timesandchangethegrainsizedistributionoftheparticlesinthemixedliq-uid.Theparticleswhicharebiggerthanthemembraneapertureandsmallerthan1μmarethemainpollutionfactorthatproducesmembranefiltrationresistance.Theviscosityofthemixedliquidpromotestheformationofgelatin.TheaddingofPACcaneffectivelyreducetheviscosityandthecontentofminuteparticles.Consequently,theinter-mixturefiltrationperformanceisimproved.Keywords:membranebioreactor;powderedactivatedcarbon;filtrationperformance;gelatinlayer[](06FZZDSH00900);(08JCZDJC24300)〔1〕:〔2〕。(MBR),〔3〕。(EPS)〔4〕。〔5~7〕。,MBR(PAC)MBR〔8〕,PAC。,,PAC,,。2810200810IndustrialWaterTreatmentVol.28No.10Oct.,20081711.1,1。19L。,,。0.22μm,1.2mm,0.8mm,75%~80%,,1m2。1.2,4.0g/L,,2PAC500mg/L,PAC,80μm,。1PAC,。。,1。:2mg/L,6h,,10min,5min,20℃,10L/(m2·h)。1.3Malvern2601LCMaster。(LVDVI,Brookfield,);MLSSMLVSS。EPS〔9〕:5mL,2%EDTA2mL,10mL,20℃5h,6880r/min20min,0.45μm,EPS,、、,mg/L。22.1PAC。,。10L/(m2·h),,。。,,。50kPa,,2。2,2PAC,,75,。,1.5,PAC,(EPS、、),,。1,30d,50kPa,,20d,,,。,,275,,,,。534271681—1;2—2;3—;4—U;5—;6—;7—;8—160504030201001020304050607080/kPa12/d21pHCOD/(mg·L-1)NH3-N/(mg·L-1)TP/(mg·L-1)TN/(mg·L-1)SS/(mg·L-1)//(mg·L-1)7.51984810.5658150100395.52008-10,28(10)182.2〔10〕,Carman-Kozney:α=180(1-ε2)2ρpdpε23=1Phρp=rcρp(1):Rf=rcδ=180(1-ε2)2dpε23δ(2):α———,m/kg;ε2———,%;dp———,m;ρp———,kg/m3;ph———,m2;rc———,m-2;δ——,m。1,、。2,,,。330,,83μm。,290.8μm。1,14μm,1μm23%8%,PAC,,。,10.5μm,2,16.5μm95μm。,2PAC,,1,,,,,10~20μm,。,0.45μm,1.0μm,A.L.Lim〔11〕2,,,。2.3EPSEPS,、、。,,EPS,EPS,,,〔12〕。J.S.Kim〔13〕,,EPS,。1EPS120mg/L。PAC2EPS80mg/L,1/3。PAC,,EPS。H.Nagaoka〔14〕EPS,,。12,4。4,,,75d2,40MPa·s。。PAC,,,,65432100.1110100100012/%/m312010080604020020406080/d/(MPa·s)214,:PAC2008-10,28(10)19。PAC。3PAC,,,1μm,,,1μm,。1μm,,1μm。Carman-Kozne,,1μm(0.5μm0.077μm,0.22μm),。,,。,,。,EPS,,,,1μm,,1/3。,,。1μm,。〔13〕。,,1.5,。4(500mg/L)EPS、,,,,1.5。,。1μm,,。[][1],.[M].:,2002:105-144.[2]OgnierS,WisniewskiC,GrasmickA.Membranebioreactorfoulinginsub-criticalfiltrationconditions:alocalcriticalfluxconcept[J].JournalofMembraneScience,2004,229(1):171-177.[3]DefranceL,JaffrinMY,GuptaB,etal.Contributionofvariousconstituentsofactivatedsludgetomembranebioreactorfouling[J].Bioresour.Technol.,2000,73(2):105-112.[4]KimuraK,YamatoN,YamamuraH,etal.Membranefoulinginpi-lot-scalemembranebioreactors(MBRs)treatingmunicipalwastewa-ter[J].Environ.Sci.Technol.,2005,39(16):6293-6299.[5],,.[J].,2004,22(6):15-16.[6]ChoJ,AhnKH,SeoY,etal.ModificationofASMNo.1forasubmergedmembranebioreactorsystem:includingtheeffectsofslublemicrobialproductsonmembranefouling[J].WaterSci.Technol.,2003,47(12):177-181.[7]GaoM,YangM,LiH,etal.Nitrificationandsludgecharacteris-ticsinasubmergedmembranebioreactoronsyntheticinorganicwastewater[J].Desalination,2004,170(2):177-185.[8],,,.PACIMBR[J].(),2004,20(2):143-146.[9],,,.EDTA[J].(),2003,35(2):120-122.[10],,,.-[J].,2006,27(11):2344-2349.[11]LimAL,BaiR.Membranefoulingandcleaninginmicrofiltrationofactivatedsludgewastewater[J].JournalofMembraneScience,2003,216(1-2):279-290.[12]MukaiT,TakimotoT,KohnoT,etal.UltrafiltrationbehaviorofextracellularandmetabolicproductsinactivatedsludgesystemwithUFseparationprocess[J].WaterResearch,2000,34(3):902-908.[13]KimJS,LeeCH,ChunHD.ComparisonofultrafiltrationcharacteristicsbetweenactivatedsludgeandBACsludge[J].WaterResearch.,1998,32(11):3443-3451.[14]NagaokaH,UedaS,MiyaA.Influenceofbacterialextracellularpolymersonthemembraneseparationactivatedsludgeprocess[J].WaterSci.Technol.,1996,34(9):165-172.[](1970—),1994,,。:022-24528104,E-mail:czp1@tom.com。[]2008-05-27()2008-10,28(10)20
本文标题:PAC对膜生物反应器过滤性能的影响曹占平
链接地址:https://www.777doc.com/doc-6539664 .html