改性粉煤灰联合高铁酸钾处理造纸废水的试验研究

331121111.2320012.23400035g/100mL25mg/L10mg/L。X703Adoi10.3969/j.issn.1003-6504.2010.05.0371003-6504(2010)05-0154-05ExperimentalStudyonUsingtheProcessofModifiedFlyAshandK2FeO4toTreatPapermakingWastewaterHEWen-li1GUIHe-rong12YUANZhi-hua1WUBin1HECan11.InstituteofEarthandEnvironmentAnhuiUniversityofScienceandTechnologyHuainan232001China2.SuzhouCollegeSuzhou234000ChinaAbstractPotassiumferrateK2FeO4wasusedtotreatpapermakingwastewaterthathadpretreatedbymodifiedflyashwhichformedthenewwatertreatmentprocessofmodifiedflyashandK2FeO4.Thedosageofmodifiedflyashwas35g/100LandthedopingdosageofK2FeO4was25mg/Lunderwhichthetreatmenteffectofpapermakingwastewaterwasoptimal.Thesupernatantliquidwastreatedbythe10mg/LamountofK2FeO4whichisthebestprocedure.Theeffluentqualityreachedwaterstandardofpaperindustry.Keywordsflyashpotassiumferratepapermakingwastewatercoagulationreusing、、、、、、。40COD148.8×104tCOD33%[1]。[2]、、、、[3-8][9-12]。、[13]。K2FeO4FeO42-FeO42-[14][15]FeO42-Fe3＋FeOH3[16]。[17]、。。。11.1JJ-4WZS-180/185Delta320-SpH-DGX-9243B-1BS110SHJ-5SH[e-mail]。EnvironmentalScience&Technology33520105Vol.33No.5May20105。HCl、H2SO4、HClO4NaOH、CrCl3·6H2O、H2SO4、Na2CO3K2FeO4。。1.21。。、、。[8]。[18-19]ρHCl：ρH2SO4=1：3。1：3。1.3NaClONaOH、FeNO33·9H2ONa2FeO4KOHK2FeO4KOHK2FeO4[20]90%。1.42。《》[20]、。22.11。40g/100mL1200330COD49.3%69.5%。Al3+Fe3+Al3+、Fe3+H2SiO3。。2.22.2.1pH=7.37、1h1h2。2。35g/100mL91.68%1Table1ChemicalcompositionofflyashfrompansanpowerplantinHuainan(%)(%)SiO258.82SO30.71Al2O327.76Na2O0.45Fe2O35.72K2O0.39CaO2.51TiO21.31MgO0.841.492Table2PapermakingwastewaterqualitypH(NTU)SS(mg/L)COD(mg/L)7.37200030101394128015533COD、68.75%、96.85%82.5%。COD、35g/100mL。2.2.2100mL35g3。350minCOD。2.2.3pHHClNaOHpH4。4pHpHpH35g/100mLpH6.8。2.3。。5。525mg/L82.5%97.5%COD68.75%77.55%。COD、Fe3+。。25mg/L1：14000。2.42.4.1Fe6+Fe3+。。20min6。610mg/L53.8NTU13.8NTU74.35%503040%COD288mg/L92mg/L116mg/L36mg/L。15652.4.2pHpH。[21-23]pH=10~12FeO42-pH=8~10FeO42-pH=7FeO42-。pHpH7。7。pHFe6+Fe3+Fe3+FeO42-Fe3+[24]FeOH3。pH=8~10FeOH3。3pHpH≤2pH。pHFeO42-H+H2O。pH7.5。pH6~7pH。pH=6.62。3pHTable3ComparisonofpHbetweenpreandpostadditionofpotassiumferratepH1.002.013.023.984.966.026.948.57pH1.012.103.926.036.847.257.978.683135g/100mL25mg/L10mg/LCOD92.85%、98.5%、99.55%97.34%COD92mg/L3013.8NTU36mg/L。2pH。[][1].[J].200618136-3747.ChuHua-ning,ZhangRen-zhi,HanEn-shan.Treatmenttechnologyandresearchprogressofpapermakingwater[J].AdministrationandTechniqueofEnvironmentalMonitoring200618136-3747.inChinese[2].[J].2005,720-22.ChengAi-huaYaoGai-huanLuRui.TheapplicationoffIyashinwatertreatment[J].ChinaResourceComprehen－siveUtilization2005,720-22.inChinese[3]NelsonMGuarinoCF.Theuseofflyashinmunicipal15733wastetreatment[J].WaterPollutControlFed1969411905-1911.[4]EyeDJBasuTK.Theuseofflyashinmunicipalwastetreatment[J].WaterPollutControlFed197042125-135.[5]MottHVWeberWJ.Sorptionoflowmolecularweightorganiccontaminantsbyflyashconsiderationofenhance－mentofcut-offbarrierperformance[J].EnvironSciTechnol1992261234-1242.[6]PandeyKKPrasadGSinghVN.Copperremovalfromaqueoussolutionbyflyash[J].WaterRes,198519869-873.[7]RaniDeviRPDahiya.ChemicalOxygenDemandCODreductionindomesticwastewaterbyflyashandbrickkilnash[J].WaterAir&SoilPollution200617433-46.[8].[D].2006.ZhangWei.ApplicationofFIyAshinWaterTreatment[D].HuainanDepartementofResourceandEnvironmentEngi－neeringAnhuiUniversityofScienceandTechnology2006.inChinese[9]ShigemotoNHayashiH.SelectiveformationofNa-Xzeo－litefromcoalflyashbyfusionwithsodiumhydroxideperi－ortohydrothermalreaction[J].JournalofMaterialScience199328478l-4786.[10]SenAsitK.Adsorptionofmercurybycoalflyash[J].WaterResearch1987218885-888.[11]WilleyJohnIncSonsRobinsonWilliam.TheSolidWasteHandbook[M].NewYorkWilleyIntersciencePublication1996156-157.[12]LippPLeeCHFaneAG.Fundamentalstudyoftheultra－filtrationofoil-wateremulsion[J].MemberSci198836161-I77.[13].[M].2005.ZhangJin-anZouHong-xiaLiQing-shan.MultipurposeUseofFlyAshandWastePlastic[M].BeijingNationalDe－fenceIndustryPress2005.inChinese[14]MurmamannRKRobinsonPR.ExperimentsutilizingFeO42-forpurifyingwater[J].WatRes197481543-547.[15]DeculaSJChaoACSmallwoodJrC.Amestestofferratetreatedwater[J].JournalofEnvironmentalEngineering19831091159-1167.[16].[J].200121701-704.QuJiu-huiLinSuWangLi-ii.Aquaticstabilityoffer－rateanditsapplicationinwatertreatment[J].ActaScientiaeCircumstantiae200121701-704.inChinese[17].[J].2003222127-129.WuShou-xuan.Removaloftracephenolfromdrinkingwaterusingpotassiumferrate[J].EcologicScience2003222127-129.inChinese[18].[J].199516247.HuangCHSuGLYangLJ.Studyonthefunctionofconcretionofflyash[J].EnvironmentalScience199516247.inChinese[19].[J].2001191106-108.JiangHong-quanLiuHong.DeterminationofpotassiumferrateVIbyredoxtitrationbasedontheoxidationofchromite[J].JournalofJiamusiUniversityNaturalScienceEdition),2001191106-108.inChinese[20]《》.[M]..2002:12.StateEnvironmentalProtectionAdministration.WaterandExhaustedWaterMonitoringAnalysisMethod[M].enlargedfourthedition.BeijingChinaEnvironmentalSciencePress2002:12.inChinese[21]WaiteTDG