反渗透膜污染过程与膜清洗的试验研究李毓亮

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 36320103TECHNOLOGYOFWATERTREATMENTVol.36No.3Mar.,201046DOI:10.16796/j.cnki.1000-3770.2010.03.010。22.1800mg·L-1400mg·L-1。0.41MPapH7～810%～15%。15%。2。pHpH7～8。pH8。pHpHpH。2。、、。。298%98%。。2.2、。。30mg·L-1250mg·L-1。0.41MPa10%～15%。3。3。pH。[4]。。3。99%。2.3。[5]。3Fig.3Membranefluxandconductivityofpermeatewaterversusoperatingtime05010015020025030035040014151617181920
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/hJ/Lmh96.096.597.097.598.098.599.099.5100.0R/%2Fig.2Membranefluxandsaltrejectionversusoperationtime47。1.5。0.1%0.1%。。250mg·L-10.42MPa15%。4。414%86%。18%。82%。2。SEM。。380%。[1].[D].,2008:8-9.[2].[M].:,2000:22-23.[3],,.[J].,2005,31(11):16-18.[4]Liqilin,Xuzhihua.Foulingofreverseosmosismembranesbybiopolymersinwastewatersecondaryeffluent:Roleofmembranesurfacepropertiesandinitialpermeateflux[J].JournalofMembraneScience,2007(290):173-181.[5],.[J].,2008,2(9):1160-1162.0510152025J/L
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h 4Fig.4ChangesofmembranefluxesbeforeandaftercleaningwithhydrochloricacidorsodiumhydroxideEXPERIMENTALSTUDYONROMEMBRANEFOULINGPROCESSANDMEMBRANECLEANINGLiYuliang1,JinYan2,ZhangXingwen1（1.SchoolofEnvironmentalandBiologicalScienceandTechnologyDalianUniversityofTechnology,Dalian116023,China;2.VontronTechnologyCo.,Ltd.,Beijing102249,China）Abstract:Thepollutionexperimentsofreverseosmosiswerecarriedoutbyusinginorganiccalciumcarbonateandorganiccolloidal.Thetrendofmembraneperformanceweretested,respectively.Theexperimentalresultsshowedthatboththetwokindsofpollutioncouldleadtoadeclineinflux.Whenthepollutionofinorganiccalciumcarbonatedevelopedtoacertaindegree,therateofdesalinationwouldreduce.However,colloidalorganicpollutioncouldincreasetherateofdesalination.CleaningexperimentsandSEMpicturesshowed:morethan80%wereirreversiblepollutioninthetwokindsofmembranefouling.Keywords：reverseosmosismembraneelement;inorganiccalciumcarbonatecontamination;colloidalorganicpollution;membraneperformance36348