海水淡化反渗透聚酰胺膜的清洗阮慧敏

、、、、[1]。、、、。[2]。。。[3-6]。、。11.1。20cm2。1.2、。。。1.31、、、、。1、2、3。13310014、。TQ028.8A1000-3700(2008)[e-mail]。

 1Fig.1Testequipmentofmembraneperformance3412200812TECHNOLOGYOFWATERTREATMENTVol.34No.12Dec.,200847DOI:10.16796/j.cnki.1000-3770.2008.12.013。NaCl32000mg·L-15.5MPa20cm225℃35mL·h-1634μS·cm-155mL·h-1240μS·cm-1。1.4400mL500mL25℃1～6h。10s。。Ry=Cf-CpCf×100＝1-CpCfCC×1001CpμS/cmCfμS/cmRy。1。22.1。。Hitachis-47002。、、、、。2.2DNA。3。3。。0.2%HCl2h46mL·h-1470μS·cm-1。2.3、、、。4。4。。pH12。2SEMFig.2SEMimageofthefouledmembrane12345638404244464850
Scm h
mLh4404604805005205405605806006203HClFig.3EfficiencyofHClcleaningatvariouscleaningtime123456404244464850
Scm h
mLh5405605806006206406606807004NaOHFig.4EfficiencyofNaOHcleaningatvariouscleaningtime341248123456404244464850
Scm h
mLh5405605806006206406606807007207405NaOH+EDTA-Na2Fig.5EfficiencyofNaOH+EDTA-Na2cleaningatvariouscleaningtime。0.1%NaOH3h44.5mL·h-1570μS·cm-1。2.40.2%10.1%NaOH+0.2%20.2%NaOH+0.2%30.3%NaOH+0.2%5。NaOHEDTA-Na2SiO2、。。。。。50.1%NaOH+0.2%EDTA-Na22h45mL·h-1566μS·cm-1。3。、、、。0.2%2h。。SiO2、NaOH+EDTA-Na20.1%NaOH+0.2%EDTA-Na22h。。[1],,.[M].:,2001:299-303.[2],.[M].:,2004:210-213.[3]Ren'ePeterSchneider,LiutasMartinaitisFerreira,PaulaBinder,etal.AnalysisoffoulantlayerinallelementsofanROtrain[J].Jour-nalofMembraneScience,2005,261:152-162.[4],,,.[J].,2007,17(1):1-4.[5]JoseJSadhwani,JoseMVezab.Cleaningtestsforseawaterreverseosmosismembranes[J].Desalination,2001,139:177-182.[6]WuiSengAng,SangyoupLee,MenachemElimelech.Chemicalandphysicalaspectsofcleaningoforganic-fouledreverseosmosismembranes[J].JournalofMembraneScience,2006,272:198-210.STUDYONTHECLEANINGOFSEAWATERREVERSEOSMOSISPOLYAMIDEMEMBRANESRUANHui-min,QIUJun-hong,SHENJiang-nan,SHUIYin-jie(CollegeofChemicalEngineeringandMaterialsScience,ZhejiangUniversityofTechnology,Hangzhou310014,China)Abstract:Onthebasisoftheproblemofreverseosmosis(RO)membranesfoulingintheROseawaterdesalinationprocess,threekindsofchemicalcleaningagentswerestudiedthroughlab-scalesimulationtests.TheaffectionofcleaningefficiencyofROmembraneswerediscussedundertheconditionofdifferentconcentrationsanddifferenttimewiththethreekindsofchemicalcleaningagents.Keywords:RO;membranefouling;membranecleaning;seawaterdesalination!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!，，49