高铁酸钾对水中藻类及其次生嗅味污染物二甲基三硫醚同步去除研究

34520135ENVIRONMENTALSCIENCEVol．34No．5May2013111121.3100142.361005．PFC-PFCpH、．PFC90.6%FePFC92.4%．PFC94.5%．1min92.5%10min74.6%．2-TU99X52A0250-3301201305-1767-062012-06-142012-10-15Q12E0800632008ZX07421-002-06512084681978～[e-mail]AlgaeandItsOdorousMetaboliteDimethylTrisulfideinWaterbyPotassiumFerrateMAXiao-yan1ZHANGZe-hua1WANGHong-yu1HUShi-fei1LIQing-song21.ArchitectureEngineeringCollegeZhejiangUniversityofTechnologyHangzhou310014China2.WaterResourcesandEnvironmentalInstituteXiamenUniversityofTechnologyXiamen361005ChinaAbstractCo-removalofoscillatoriaalgaeanditspotentialodorousmetabolitedimethyltrisulfideDMTSinsimulatedalgae-ladenalkalinesourcewaterbypotassiumferrateK2FeO4wasinvestigatedincontrasttopotassiumpermanganateKMnO4pre-oxidationfollowedbypolyferricchloridePFCundervaryingconditionsincludingpHinitialoxidantdosageandturbidity．Basedonthepre-comparisonwithPFCtheoptimaldosageofPFCinthecombinedKMnO4pre-oxidation-PFCtreatmentwasdetermined．Potassiumferrateresultedin92.4%removalofalgaehigherthanPFCwhenthedosagewasequivalentasmeasuredbyFeandKMnO4showedobviouslypositiveeffectasacoagulationaid．Degradationofdimethyltrisufide92.5%bypotassiumferratewasbetterthanthepre-oxidationofpotassiumpermanganate74.6%andthetreatmenttimewasdecreasedfrom10minto1min．Keywordsalgaetasteandodordimethyltrisulfidepotassiumferratecoagulation2-MIBgeosmin．、、ng·L－1．、1～4．2-2-MIB、geosminβ-、56．、、、7～11．1213．K2FeO4．Park14FeⅥ2-MIBgeosmin34pH6～825%FeⅥ．DMTS15pH．PFCKMnO4K2FeO4．11.1DMTS≥95%TokoyChemicCompany≥99%CNW≥99.5%PFCB=1.0KMnO4≥99.5%K2FeO4≥50%18MΩ·cm．GC-2014XSP-2C2100PpHSensION．1.2BG11．105～106·L－1DMTS555.3～600.0μg·L－1．-pH62～65NTU1．1Table1Waterqualityindexofartificialwaterwithalgaeofhighconcentration/·L－1DMTS/μg·L－1UV254/cm－1/NTUpH6.4×105555.3～600.00.03562～6510.81.31PFCFe250r·min－11min50r·min－110min30min．2KMnO4100r·min－110minPFC．．3K2FeO4Fe100r·min－11min250r·min－11min50r·min－110min30min．1.41.4.1DMTS100mL100mL．5%NaCl1mL1200r·min－110minGC．250℃50℃15℃·min－1150℃30℃·min－1240℃FID250℃1.5mL·min－11μLDMTS3.419min．1.4.2215%．22.1K2FeO41K2FeO40.05mmol·L－1DMTS44.5%0.20mmol·L－192.5%93.3%．K2FeO42.2V0.7V161K2FeO4DMTS．K2FeO40.2mmol·L－1K2FeO40.2mmol·L－1．K2FeO4AmesK2FeO4“”1617．K2FeO40.05mmol·L－187.5%867151K2FeO4Fig．1RemovalofalgaeanditsodormetaboliteswithdifferentdosageofK2FeO492.8%．K2FeO4Fe3+FeOH31819．．K2FeO40.30mmol·L－11.5NTU．2.2PFCPFC、18．2PFC．PFCK2FeO4PFCK2FeO4．2PFC0.125mmol·L－185.3%PFC90.6%．PFCPFCFeⅢPFC2021．PFCDMTS1522PFCDMTS227.2%．PFC0.25mmol·L－190.6%0.76NTU．2PFCFig．2RemovalofalgaeanditsodormetaboliteswithdifferentdosageofPFC2.3KMnO4-PFC3PFC0.25mmol·L－1KMnO40.0125～0.0750mmol·L－1．3KMnO4-PFCDMTS90.9%．KMnO41.7V0.59V2324KMnO4K2FeO4KMnO4．3KMnO4Fig．3RemovalofalgaeanditsodormetaboliteswithdifferentdosageofKMnO4KMnO4-PFC90%94.8%．967134PFC4.2．KMnO425ZetaKMnO4EOMEOMKMnO4MnO2．KMnO4KMnO4MnO2．KMnO4KMnO4．2.4K2FeO4KMnO4-PFC1～30.25mmol·L－1PFC90.6%KMnO4-PFC94.8%K2FeO492.4%K2FeO4PFCK2FeO4．3KMnO4-PFC＞K2FeO4＞PFCKMnO4-PFC＞K2FeO4＞PFC．PFCDMTSK2FeO492.5%KMnO4-PFC74.6%．KMnO40.05mmol·L－1K2FeO40.25mmol·L－1KMnO45FeⅥMnⅦK2FeO4DMTSKMnO4．13KMnO4K2FeO40.05mmol·L－1DMTS74.6%44.5%KMnO4K2FeO4．pH10KMnO4K2FeO4pHK2FeO42326．2.5K2FeO4KMnO4-PFC2.1～2.3K2FeO4KMnO4-PFC2K2FeO40.25mmol·L－1KMnO4-PFCPFCFe0.25mmol·L－1KMnO40.05mmol·L－1．2.5.1pH42pH．KMnO4pH70%75.2%．K2FeO4pHpH5.24DMTS35.4%pH9.1378.5%pHKMnO4K2FeO416．K2FeO4KMnO4K2FeO4PFCKMnO4MnO2．4pH2Fig．4InfluenceofpHvalueontheremovalofalgaeanditsodormetabolitesbythetwomethods2.5.25K2FeO41min92.4%92.5%KMnO420min94.5%79.5%．K2FeO430s60～600s27．K2FeO4KMnO4K2FeO4KMnO4．2.5.3620771552Fig．5Influenceofpre-oxidationtimeontheremovalofalgaeanditsodormetabolitesbythetwomethods18．K2FeO4KMnO4KMnO4．KMnO4K2FeO4、、．62Fig．6Influenceofturbidityofrawwaterontheremovalofalgaeanditsodormetabolitesbythetwomethods31K2FeO4FeOH3．2PFCK2FeO4PFC．KMnO4-PFCK2FeO4．3K2FeO4．1ZhangXJChenCDingJQetal．The2007watercrisisinWuxiChinaanalysisoftheoriginJ．JournalofHazardousMaterials20101821-3130-135．2OwensPNWallingDE．ThephosphoruscontentoffluvialsedimentinruralandindustrializedriverbasinsJ．WaterResearch2002363685-701．3DengXWLiangGDChenJetal．SimultaneousdeterminationofeightcommonodorsinnaturalwaterbodyusingautomaticpurgeandtrapcoupledtogaschromatographywithmassspectrometryJ．JournalofChromatographyA20111218243791-3798．4．J．2008294902-908．5．J．20072711177l-1777．6．D．2010．7．β-J．20114241161-1166．8．γ-2Al2O3J．2007283563-568．9．2-J．200627122484-2487．10QiFChenZLXuBBetal．Degradationof2-methylisoborneolindrinkingwaterbybauxitecatalyzedozonationJ．JournalofWaterSupplyResearchandTechnology-AQUA2008576427-434．11KutscheraKBrnickHWorchE．Photoinitiatedoxidationofgeosminand2-methylisoborneolbyirradiationwith254nmand185nmUVlightJ．WaterResearch20094382224-2232．12．D．2008．13．D．2008．14ParkGYuMGoJetal．Comparisonbetweenozoneand177134ferrateinoxidisinggeosminand2-MIBinwaterJ．WaterScienceandTechnology2007555117-125.15FranzmannPDHeitzAZappiaLRetal．TheformationofmalodorousdimethyloligosulphidesintreatedgroundwatertheroleofbiofilmsandpotentialprecursorsJ．WaterResearch20013571730-1738．16SharmaVK．Potassiumferra