粉末活性炭超滤一体化工艺处理微污染水效果

457()Vol.45No.720147JournalofCentralSouthUniversity(ScienceandTechnology)July2014−1111223(1.1001242.5283053.150001)(PAC)−(UF)UV254CODMnPAC0.100NTUPAC102040mg/LPACPAC10mg/LPACPACPACPAC−UFTU991A1672−7207(2014)07−2517−06Treatmentofmicro-pollutedwaterwithPACandultrafiltrationintegratedprocessLIUYongwang1,LIXing1,YANGYanling1,RENJiawei1,LUOWangxing2,LINXianzeng2,LIGuibai3(1.CollegeofArchitectureandCivilEngineering,BeijingUniversityofTechnology,Beijing100124,China;2.FoshanWaterGroupCo.Ltd.,Foshan528305,China;3.StateKeyLaboratoryofUrbanWaterResourceandEnvironment,HarbinInstituteofTechnology,Harbin150001,China)Abstract:Anintegratedprocessofpowderedactivatedcarbon(PAC)andultrafiltration(UF)wasusedtotreatamicro-pollutedwater.EffectsofPACdosagesonturbidity,UV254andCODMnremoval,aswellasmembranefoulingwereinvestigated.EffectsofPACretention-timeonorganicremovalwasconductedsimultaneously.Theresultsindicatethattheeffluentturbidityisunder0.1000NTU,whichcouldnotbeinfluencedbyPACdosageandtheturbidityofinfluent.OrganicsremovalisenhancedwiththeincreaseofPACdosageat10,20and40mg/L,buttheperformanceofunitPACmassisreduced.Itcouldmeetthedemandofeconomicsandeffluentqualityatthedosageof10mg/LPAC.OrganicsremovalisdecreasedwiththeincreaseofPACretention-time,andthedeclineisweakeratahigherdosage.MembranefoulingisreducedwithPAC−UFprocess.Abettertrans-membranepressure(TMP)recoveryisreceivedforsodiumhypochloritecompositewithacidoralkaliduringchemicalcleaning.Keywords:ultrafiltration;powderedactivatedcarbon;membranefouling;chemicalcleaning2013−07−062013−09−06(2012ZX07404-003)(1963−)010-67391726E-mail:[e-mail]()452518[1][2][3−4][5−7](powderedactivatedcarbonPAC)[8−10]PAC[11−12]PAC−UFPACPAC−UFPACPAC−UFPAC−UF11.1(20min)(6%)25~30mg/L()1PVC0.01µm1.45mm0.85mm0.02m2PAC80μm13%9%615mg/g5.5mL1Table1Waterqualityparametersofrawwater/NTU*2.32~4.602.85UV254/cm−10.032~0.0410.037ρ(CODMn)/(mg·L−1)1.43~2.061.74ρ()/(mg·L−1)0.165~0.4120.342/25.8~26.726.4pH7.73~7.857.80*1mg1L1NTU1.224(TMP)124h3min70L/(m2·h)10min1min20:1380mL30min102040mg/L24h30L/(m2·h)1Fig.1Sketchofmembranedevice50L/(m2·h)24h2h30L/(m2·h)TMP5min%1000tdtppppR(1)Rptpdp01.3UV254CODMnTMP7−2519HACH2100N0.001NTUUV254754N254nm0.45µmCODMnTMPPLC22.12.1.12PACPAC/(mg·L−1):10;210;320;440;52PACFig.2EffectofPACdosagesonturbidityremoval2PAC−UFPACPAC0.100NTU95%1.000NTU2.1.2UV254CODMnUV254CODMn2PAC−UF3(a)UV254;(b)CODMnPAC/(mg·L−1):1;20;310;420;5403PACFig.3EffectofPACdosagesonorganicsremovalUV254TOCTHMs,[3]2PAC3UV254UV2546.65%PAC102040mg/LUV25440.50%50.07%64.93%PACUV254UV254PACPACPAC−UFCODMn1.4~2.1mg/L()4525201.70mg/L1.39mg/L18.24%PAC102040mg/LCODMn0.960.820.67mg/L43.53%51.77%60.59%PACCODMnPACPAC−UFPAC102040mg/LPACUV2543.38%2.20%1.46%CODMn2.53%1.68%1.06%10mg/LPAC2.1.3TMP1PAC444PACPACPACPACPACPAC[3]PACPACPAC10mg/L40mg/L4PACTMPFig.4EffectofPACdosageonmembranefouling0.25kPa/h0.15kPa/hPACPAC[13]PAC2~10g/L15g/LPACPACPAC40mg/L1.52g/L2.2PACPAC22h18h51UV2542h;2UV25418h;3CODMn2h;4CODMn18h5PACFig.5EffectofPACdosageandretentiontimeonorganicsremoval510mg/LPAC2hUV2546.65%59.01%52.36%CODMn17.50%53.81%36.31%PACUV254PAC−UFPACPACPAC40mg/L20mg/LUV25473.90%68.48%55.95%31.67%17.94%36.81%40mg/L20mg/L7−2521UV254PACPAC2.3TMPPACTMP66NaClOEDTA[11]EDTATMP0.01mol/LHCl3%70.84%83.67%0.01mol/LNaOH66.69%Lee[14]0.01mol/LHCl+200mg/LNaClO0.01mol/LNaOH+200mg/LNaClOLiang[15]11%H2O2;2200mg/LNaClO;30.01mol/LHCl;40.01mol/LNaOH;51%;61%EDTA;70.01mol/LHCl+200mg/LNaClO;80.01mol/LNaOH+200mg/LNaClO6TMPFig.6TMPrecoveryofdifferentchemicals3(1)PAC−UF0.100NTUPAC(2)102040mg/LPACPAC10mg/LPAC(3)PAC−UF(4)[1]XIAShengji,LIUYanan,LIXing,etal.DrinkingwaterproductionbyultrafiltrationofSonghuajiangRiver[J].JournalofEnvironmentalSciences,2007,19:536−539.[2],.[J].,2007,1(1):1−3.LIGuibai,YANGYanling.Ultrafiltration—the3rdgenerationkeywaterpurificationtechnologyforcity[J].WaterTechnology,2007,1(1):1−3.[3],,,.PAC−UF[J].,2010,42(11):1779−1782.QUFangshu,LIANGHeng,WANGHui,etal.PurificationoftheeffluentofsedimentationwithPAC−UFprocess[J].JournalofHarbinInstituteofTechnology,2010,42(11):1779−1782.[4]MoziaS,TomaszewskaM.TreatmentofsurfacewaterusinghybridprocessesadsorptiononPACandultrafiltration[J].Desalination,2004,162:23-31.[5]YiantsiosSG,KarabelasAJ.Anexperimentalstudyofhumicacidandpowderedactivated[J].Desalination,2001,140:195−209.[6]ZularisamAW,IsmailAF,SalimR.Behavioursofnaturalorganicmatterinmembranefiltrationfor[J].Desalination,2006,194:211−231.[7]ZHANGYan,TIANJiayu,LIANGHeng,etal.ChemicalcleaningoffouledPVCmembraneduringultrafiltrationofalgal-richwater[J].JournalofEnvironmentalSciences,2011,23(4):529−536.[8]LIYonghong,ZHANGXiaojian,ZHANGWei,etal.Effectofpowderedactivatedcarbononimmersedhollowfiber()452522ultrafiltrationmembranefoulingcausedbyparticlesandnaturalorganicmatter[J].Desalination,2011,278:443−446.[9]LINHongjun,WANGFangyun,DINGLinxian,etal.Enhancedperformanceofasubmergedmembranebioreactorwithpowderedactivatedcarbonadditionformunicipalsecondaryeffluenttreatment[J].JournalofHazardousMaterials,2011,152:1509−1514.[10]MunzG,GoriR,MoriG,etal.Powderedactivated