高锰酸钾预氧化对混凝超滤去除天然水体中腐殖酸的影响研究

、[1-3]。、[4-6]。[7-8]。-、。11.1。90%。UV254HA22.4mg/L。HA4.3mg/L7.6mg/L1。1.21。KMnO40、0.2、0.5、1.0、2.0mg/L30min。15mg/LAlCl3。。USIC-20.1～0.2μm20×103～50×1030.3m2。10L/h30kPa。1Fig.1ExperimentalsystemHA2HA4HA87.137.577.612.44.37.60.0860.1330.2403.85.89.55.47.014.216.416.017.51Tab.1QualityofinfluentwaterpHρ(HA)/(mg·L-1)UV254/cm-1ρ(DOC)/(mg·L-1)CODMn/(mg·L-1)/215009--2.4、4.3、7.6mg/L。。、、。0.2～1mg/L。7.6mg/L1h0.95～0.97。-TQ028.8A1000-3770(2014)[e-mail][e-mail]40820148TECHNOLOGYOFWATERTREATMENTVol.40No.8Aug.,2014833KMnO4UV254DOCFig.3EffectofKMnO4dosageontheremovalofUV254andDOCbycoagulation0.00.51.01.52.0010203040506070
/(mgL)/%1htJt29℃。KMnO410minJ0。1.3CODMnGB11892－89[9]UV254UV-7504DOCTOC/TNTOC-LCPH。DOCUV2540.45μm。SUVA=100UV254/ρ(DOC)。30kPaJt/J0。22.12.1.12。2KMnO41mg/LUV254DOC。KMnO41mg/L2.4mg/L7.6mg/LUV254DOC0.027cm-11.1mg/L。、pHKMnO4[10]。[11]。MnO2KMnO4NOM[12]。2.1.23。3UV254。DOCKMnO40.5mg/L。KMnO4。2.1.3。KMnO44。4KMnO41mg/LUV254DOC。20%。20×103～50×10310×103～30×103。2.1.3SUVA。KMnO41mg/L2KMnO4UV254DOCFig.2EffectofKMnO4dosageontheremovalofUV254andDOCbypre-oxidation0.00.51.01.52.02.50.000.050.100.150.200.250.300246810
/(mgL)UV/cmρ(DOC)ρ(DOC)/(mg·L-1)4KMnO4UV254DOCFig.4EffectofKMnO4dosageontheremovalofUV254andDOCbyultrafiltration0.00.51.01.52.005101520253035
/(mgL)/%40884SUVA2。2KMnO4DOCUV254SUVA。SUVA。10×103HA2SUVA[13-14]。34KMnO4。2.4、4.3、7.6mg/L1mg/LKMnO4UV25439%、52%、69%DOC84%、60%67%。3DOC54%、30%20%。2.2J0(24.3±0.3)L/(m2·h)。5Jt/J0。5。[15]1、。2Jt/J050～20min23。5KMnO4。KMnO41mg/L。KMnO4[16]。0.2～1.0mg/L。3KMnO4。2.4、4.3、7.6mg/L1mg/LKMnO4DOC84%、60%67%30%～47%。KMnO4、HA2HA4HA82.296.675.7810.162.294.983.453.112.533.562.322.812SUVATab.2SUVAofwatersampleSUVA/(L·mg-1·m-1)5(a)HA201020304050600.60.70.80.91.0J/Jt/min5(b)HA401020304050600.60.70.80.91.0J/Jt/min5(c)HA85KMnO4Fig.5EffectofKMnO4dosageonfluxratiosofultrafiltrationateachHAconcentration01020304050600.60.70.80.91.0J/Jt/min－85EFFECTOFPRE-OXIDATIONWITHPOTASSIUMPERMANGANATEONTHEREMOVALOFHUMICACIDFROMSURFACEWATERINACOAGULATION-ULTRAFILTRATIONPROCESSGuoXiaofang,QianFeiyue,ShenYaoliang,WangJianfang,ChenChongjun,WuPeng(SchoolofEnvironmentalScienceandEngineering,SuzhouUniversityofScienceandTechnology,JiangsuKeyLabofEnvironmentalScienceandEngineering,Suzhou215009,China)Abstract:Thecombinedprocessofpotassiumpermanganatepre-oxidation,coagulationandultrafiltrationwasusedforremovalofhumicacidfromsurfacewater.Andeffectofpotassiumpermanganatedosageoneffluentwaterqualityofeachstepandultrafiltrationmembranefoulingwasinvestigated,withhumicacidmassconcentrationsof2.4mg/L,4.3mg/Land7.6mg/L.Resultsshowedasignificantenhancementofpre-oxidationontheremovaloforganicsincombinedprocess,andthetargetcontaminantofthreestepswasnaturalorganicmatter,humicacidandorganiccompoundofhighmolecularweight,respectively.Inaddition,membranefoulingcouldbelesseneffectively,duetothepre-oxidationwithpotassiumpermanganatedosageof0.2~1.0mg/L.Fluxratiosofultrafiltrationmembraneremainedat0.95~0.97duringtheoperationtimeof1h,evenwhenhumicacidmassconcentrationwas7.6mg/L.Keywords:pre-oxidationwithpotassiumpermanganate;coagulationandultrafiltrationprocess;humicacid;membranefouling、。UV254DOC70%。KMnO40.2～1mg/L。2.4～7.6mg/L1hJt/J00.95～0.97。。[1]GuoXiaoya,LiQilin,HuWanli,etal.Ultrafiltrationofdissolvedorganicmatterinsurfacewaterbyapolyvinylchloridehollowfibermembrane[J].JournalofMembraneScience,2009,327(1/2):254-263.[2]ArnalJM,Garcia-FayosB,VerduG,etal.Ultrafiltrationasanalternativemembranetechnologytoobtainsafedrinkingwaterfromsurfacewater:10yearsofexperienceonthescopeoftheAQUAPOTproject[J].Desalination,2009,248(1/3):34-41.[3]PierreLe-Clech,Eun-KyungLee,VickiChen.Hybridphotocatalysis/membranetreatmentforsurfacewaterscontaininglowconcentrationsofnaturalorganicmatters[J].WaterResearch,2006,40(2):323-330.[4]KennedyMariaD,KamanyiJoe,HeijmanBasGJ,etal.ColloidalorganicmatterfoulingofUFmembranes:roleofNOMcomposition&size[J].Desalination,2008,220(1/3):220-213.[5],,,.[J].,2005,25(4):530-534.[6].[M].:,2000:31-46.[7]HyungKimMi,YuMyongJin.CharacterizationofNOMintheHanRiverandevaluationoftreatabilityusingUF-NFmembrane[J].EnvironmentalResearch,2005,97(1):116-123.[8],,.[J].,2012,38(1):105-108.[9]GB11892－89[S].[10]TaoLin,ShaolinPan,WeiChen,etal.Effectofpotassiumpermanganatepre-oxidationonfoulingandporesizeofultrafiltrationmembranefordrinkingwatertreatment[J].DesalinationandWaterTreatment,2012,50(1/3):254-263.[11],,,.[J].,2011,37(2):102-105.[12]LZZhang,JMa,MYu.Themicrotopographyofmanganesedioxideformedinsituanditsadsorptivepropertiesfororganicmicropollutants[J].SolidStateSci,2008,10(2):148-153.[13],,,.[J].,2010,36(3):96-98.[14],,,.[J].,2001,2l(5):553-556.[15],,.[J].,2009,29(1):11-16.[16],,,.//[J].,2007