超滤反渗透双膜技术深度处理印染废水曾杭成

2　8环境工程学报Vol.2,No.820088ChineseJournalofEnvironmentalEngineeringAug.2008/曾杭成1　张国亮1＊　孟　琴2　陈金媛1　王岐东3(1.,310014;2.,310027;3.,100084)　　,,。,,BW30CPA2,。,,。(COD)10mg/L,80μS/cm,99%93%,。BW30CPA2,CPA2。　　　　　　X703.1　　　A　　　1673-9108(2008)08-1021-05TreatmentoftextilewastewaterusingultratfiltrationandreverseosmosisdualmembranesystemZengHangcheng1　ZhangGuoliang1　MengQin2　ChenJinyuan1　WangQidong3(1.CollegeofBiologicalEnvironmentalEngineering,ZhejiangUniversityofTechnology,Hangzhou310014;2.CollegeofMaterialChemicalEngineering,ZhejiangUniversity,Hangzhou310027;3.DepartmentofEnvironmentalScienceandEngineering,TsinghuaUniversity,Beijing100084)Abstract　Ultrafiltrationandreverseosmosiscombinedmembraneprocesseswereappliedforinthetextilewastewatertreatmeatandreuse.Aspretreatment,ultrafiltrationhadgoodperformanceonremovalofturbidityandorganicmatterswithhighmolecularweight,whichcouldguaranteegoodqualityoffeedwaterforreverseosmosis.Twokindsofreverseosmosismembranes(BW30,CPA2)weretestedandcomparedlaterbycarryingoutthelab-testunderdifferentoperatingpressures,timesandtemperatures.ItappearedthatpermeatehadCODvaluelowerthan10mg/Landconductivitynomorethan80μS/cm.TherejectionforCODandsaltcouldreachashighas99%and93%,respectively.Permeateofbothtwomembranescouldberecycledtomostofdyeingprocess.ComparedwithCPA2,BW30hadalittlebetterqualityofpermeate,butitsfluxwassomewhatlower.Atlast,permeatefluxdecreaseduetomembranefoulingwasalsoanalyzed.Keywords　ultrafiltration;reverseosmosis;textilewastewater;reuse;membranefouling:(20776133);(2006C23067):2007-12-21;:2008-04-27:(1984～),,,。＊,E-mail:[e-mail]　　COD、、,[1]。,,,,[2,3]。Fentons、、,,[4,5]。,,,。。,,,,。、COD,。COD、、[6],,,,。21　1.1　1,,,COD,COD250mg/L,《》。1　Fig.1　Schemeoftheexperimentalsystem　　,2。,,,。。,。,,。1.2　PAN-300、PAN-700、PVDF3,30000,70000140000Dalton,BW30CPA2。1.3　DDS-ⅡA,722N680nm,pHPHS-3DpH,COD,861-813。2　2.1　　3,COD,2,,PAN-30091%,4.2NTU,PAN-700PVDF87%90%。COD,,。3,PAN-300COD,37.2%。,COD,,,。2　CODFig.2　RemovalofturbidityandCODwithdifferentultrafiltrationmembranes2.2　。:10228:/Jw=AΔP(1):Jw=ΔPR(2):A,R。,、3。,,,。20℃,2。3,,CPA2,,CPA2BW30。(2),BW30CPA245.66h·MPa/m29.75h·MPa/m。,,。3,,,,。,,。3　Fig.3　Changeofmembranefluxasafunctionofpressure2.3　42。4,,,BW30CPA2,6h,2,。,,。4,,CPA220℃40℃,53.3L/(m2·h),93.3L/(m2·h),BW304　CODFig.4　ChangeoffluxandCODrejectionasafunctionoftimeatdifferenttemperatures。6h,,,。,,,20℃40℃,5L/(m2·h)。4COD。4,[7],,,COD。40℃,COD,,,COD。4,,,CPA2BW30,,。,COD,。2.4　,,(2)RRmRg,,(2):Jw=ΔPRm+Rg(3)(3):Rg=ΔPJw-Rm(4)　　Rg(4)。20℃、2.8MPaRg。5Rgt,102325,,,,2.8MPa,,。5,CPA2BW30,3h,CPA2BW30,CPA2,。Abbas[8](Rg)(V),。,,CPA2BW30,。5　Rg(20℃)Fig.5　Changeofresistanceofgelatinlayervs.time(20℃)2.5　SEM6SEM,6。,,,,,,。,,。,,,。6　PVDFBW30SEMFig.6　SEMpicturesofPVDFandBW30membraneafterexperiment2.6　120℃。1,90%,CODUV254,。,。BW30CPA2,COD,COD2.8mg/L2.9mg/L,,COD,10mg/L。,BW30CPA230～40μS/cm70～80μS/cm,,。,,。1　Table1　CharacteristicsofpermeatetreatedbyUFandROPAN-300RPAN-700RPVDFRBW30RCPA2R1＊COD(mg/L)25015737.221016.1220.311.92.8992.99960pH7.067.03-6.97-7.10-6.98-7.06-6.5～8.5UV2541.5841.4866.21.496.01.5124.50.05296.70.08794.5-(NTU)57.35.2917.4875.790010001005(μS/cm)196017709.7618604.918505.33598.27596.2-Cl-(mg/L)589.3589.305890589.307.698.713.697.7250SO2-4(mg/L)3263260326032601.599.52.999.1-NO-3(mg/L)108.6108.601090108.602.797.52.697.6-　　:＊GB/T19923-2005;R(%)10248:/　　/,。10t/h,,0.1/m3,0.18/m3(2),0.35/m3;0.5/m3,0.35/m3(3),0.4/m3,,/1.88/m3,1.35/m3,3.23/m3,(3.5/m3),/。,、,/。3　　　　,,。,,,COD,。COD,20℃,BW30COD99%98%,CPA2COD99%,96%。,,,,。,,2,,,,。[1]MoJ.H.,LeeY.H.,KimJ.,etal.Treatmentofdyea-queoussolutionsusingnanofiltrationpolyamidecompositemembranesforthedyewastewaterreuse.DyesandPig-ments,2008,76:429～434[2],,,..,2007,1(2):46～48[3]ZhangG.,ZengH.C.,MengQ.WaterRecyclingfromDyeingEffluentUsingNanofiltrationandDiverseOsmosisMembranes.AnnualACSMeeting,Boston,September,2007[4]RobinsonT.,McMullanG.,MarchantR.,etal.Remedi-ationofdyesintextileeffluent:Acriticalreviewoncurrenttreatmenttechnologieswithaproposedalternative.Biore-sourceTechnology,2001,77:247～255[5]AllegreC.,MoulinP.,MaisseuM.,etal.Treatmentandreuseofreactivedyeingeffluents.JournalofMembraneScience,2006,269:15～34[6]FersiC.,GzaraL.,DhahbiM.Treatmentoftextileefflu-entsbymembranetechnologies.Desalination,2005,185:399～409[7]JianX.,DaiaY.,HeaG.,etal.PreparationofUFandNFpoly(phthalazineethersulfoneketone)membranesforhightemperatureapplication.JournalofMembraneSci-ence,1999,161:185～191[8]AbbasH.,HossainM.M.,ChenX.Modellingofanhy-drousmilkfatfractionationinanultrafiltrationmembraneprocess.ChemicalEngineeringandProcessing,2007,46:393～3971025