饮用水处理中浸没式纤维超滤膜的清洗中试

201010,2,,2(1.,266033;2.,150090):..:,80%90%;84.3%,[:14OLmh);:22.sm/(h)[14oL/(mZh)]39%.:80L/(mZh),45m3/(mh),1201805,93%,94%.pH2HCI150250mg/LNaC10,,Na0H;.:;;;;,,,,,.,,.,,EFM3j.11.1,.240t/d.IVC,;1500~;:(OUT/IN).10,10mX25m,745~X53~XZ037~,l.1Fig.1Sehematiediagramofthemembranemodule,,,;,,/;,,,.:::20100921(2008ZX07423024);(20101Xol);(20100471074).(1987),,.([e-mail])*:(1931),,,.:8131.2,,J/J.,)K,.10ZZKx10%,,,L/(mZhkPa);,L/(mh);,kPa;K;;.EFMr,::(3),;,,;r1.1.3,,,,40L/(mZh),()2.2m.,,;,40L/(mZh),EFM.,,,25.22.1,.ABCDEFGH8,3,k,1.8()4h,:225min,s15min.1Table1Experimentaldesignonairbubblingandwaterbaekwashiforthemembrane/s/(h,m)/(Lh,m)/(m2)/(Lm2)K/%6874758072797284668790877897748994839622.5IU0631938253D1007889787267780017n006778001700ŒƒnJ.13585’2070803022.51j†01.122.530809.O.7-:011196313196313382525n1130800.381.252.253.117.0098.6))0000njƒX:,,/(m2h);,,L/(h).81420102.21)2.,,74%80%(Za);2b,,._____~;jjj/_:45m,/(hm,)))JJJ;:///_)______/////306090120/s00.3060.91.21.5/(m3m2)2aFig.ZaEffeetofairbubblingonmembranePermeabilityrestorationwithtime2)3.3a,;Zb,3b,,ZbFig.ZbEffeetofairbubblionmembranepermeabilityrestorationwiththeamountofairbubbled,.,...._____._____________________________________...________:///,:140U(h.m)))////___________________________.___________///1oo8O.________~________{_____________________,:8(hmZ,---____~:140IJ(h.m)))///l-------l----60402000.5/s1.01.520/(L.m2)253.03aFig.3aEffeetofwaterbaekwashionmembranepermeabilityrestorationwithtime3)4a.23,3bHg3bEflecofterhaehamrnemlbilityrestorationwiththean10untofwaterbaekwashed,;,.0090-,gU------22r)4040D0”””“807045ms/(hmZ)mZ)45m3/I.mZ):22.5m3/(hmZ)0306090120150180210/s345:45m,/2):22.5m3/(h,):45m2):22.5m,/(h2)6770so4aFig.4bEffeetofeombinationofairbubblingandwaterbaekwashingonmembranepermeabilityrestorationwithtirne/(Lm2)4bFig.4bEffeetofeombinationofairbubblingandwaterbaekwashionmembranepermeabilityrestorationwiththean10untofwaterbaekwashed:4)4b.,,X.3b4b,,,.,140L/(hm)705,84.3%,2.72L/mZ;,14OL/(hmZ)22.5m3/(hm)1.67L/m,39%,.,,.,,.2.32.2,,,.45m3/(hmZ);80L/(hmZ),5051005180530054205,7,K.5.2.4,.,:,;,;..2.rng/IJ2Tab.2Typesofmembranefoulantsandeorrespondieleaningagents(Ca,Mg2+F),EDI,A400800nlg/L,.5%~1%,NaOHNa()H1101oo,.36.6,.,1.02.3Tab.3ExPerimentaldesignontheehemiealeleanioffouledmembraneABC601201802403(X)360420480ls5Fig.5Variationofeleanieffieieneyofeombinationofairbubblingandwaterbaekwashingwitheleaningtime5,7min,1805,93%.7min,96%.,,,,.1201805,94%.NaCIO,25Orx/L,(H,pH11.6,IICI,PH:40n40n3hHCI,pH2.09,CIO,25Orl/LCIO,2540~40~ZhHCI,pll2.37,CI(,2040n1ZhNaCIO,25On/Lgh.1.weJJ.weILlllLCU8070605040!B,fllV,111,.,,..HCI.8162010yyy=0.079In(x)+1.17333RZ=0.906-----____---6Fig.6Cleaningeffieieneiesoffouledmembranebyeombinationofdifferentehemiealagents/,,4.,NaC10HCI,HCI.,,.NaCIO,;,.4Tab.4Comparisonofmetaleoneentrationinehemiealeleaningsolutions/(mgL)NaC10NaCIO7Fig.7EffeetofCleaningeffieieneyontimeunderdlfferenteoneentratlon.,EFM,,,.,,.,,.,;[s,9;(89).Fe1.280.190.711.43Mn0.141.000.030.262009.11.052009.11.22:1.05m3,250m2.2.52.4,.:,(C)tl,;Ct:,(t1+t:);,t3,(t1+tZ+t3)X,Y,7.7,,.,.,,8Fig.8Thepietureofrootmembranewirefouling31),;,,;2),;,:,;3),,,;;4),NaC10,;,,;5);.,,,.[1MulderM.()M,().:,1999.299304.[2,,.J.,2006,26(1):4749.3desaardH,TllorsenT,MelinEPracticaleeriencesfromembranefiltrationplantsforh~CSubstanceremovalJ].Wateri1ehnol,2000,41(10):3341.[4].M],:,2000.248251.5KimuraK,HaneY,wataY.Irreversiblemembranefoulingduringultrafiltrationofurfaeewater[J].WaterReseareh,2004,38:34313441.[6,[J.,2001,17(10):14.[7,,.J].,2007,27(5):8258.[8]ChangS,FaneAG.Filtrationofbiornasswithlab--sealesubmergedhollowfibremembranemodule:effeetofop-erationaleonditionsandmoduleeonfigurationJJChemTeehnolBioteehnol,2002,77:10301038.[9]CuiZF,ChangS,FaneAG.Theuseofgasbubblingtoenhaneemembraneproeesses[J.JMembrsei,2003,221(1~2):135.CleaningofimmersedhollowflberultrafiltrationmembranefordrinkingwatertreatmentSHENYudong,TIANJiauZ,LUMdu,LlGuibaiZ(1.SehoolofEnvironmentalandMunieipalEngineering,QingdaoTeehnologiealUniversity,Qingdao266033,China;2.StateKeyLaboratoryofUrbanWaterResoureeandEnvironment,HarbinInstituteofTeehnology,Harbin150090,China)Abstract:Thefeasibilityandeeononlyofhollowfiber(HF)nlenllraneforultrafiltrationtreatrnentofdriiwa--ter15highlydepen(entonthefoulibehaviorandcorrespondielengoperatioPilotscaleeerirnentsthirnrnersedHFmembranewereconduetedtoinvestigatetheeffeetofoperatingconditionsofPhysiealeleaningandchemicalel~ontheelinationofmembranefouliTheresultsshow:aseomparedthindividualairbub-bliorwaterbaekwashing,theeomlinationofairandwatereleanieouldsubstantially11111rovetheeleanief--fieieney,asdemonstratedbytheincreaseofpemabilityrestorationcoeffieientfrom80%to90%.ToaChievethesarneelearneffeet(84.3%permeabilityrestoration),39%ofthewaterconsLlnlltioneouldalsoberedueedbythecombinedairbubbliat22.5m3/(m2h)andwaterbaekwashiat14OL/(m2h),whenconlparedthindividualwaterbaekwlshiat14OL/(m2h).Theoptizedeleaeonditionwasdet~nedaswaterbaek-wasat4oL/(m2h)conlbinedwithairbubbliat45m3/(m2h)for1201805.UnclerthisCondition,thepermeabilitycouldbereeovere