超声曝气组合工艺降解采油废水黄原胶的研究李璐

D-、D-D-β-(1,4)-β-D--β-D--α-D-[1][2]。[3]。[4]。、、、。。、、3“”[5-6]。、、。[7][8]、、、[9]。、、、pH。11.1、、、、0.6～0.7mm、、NDJ-1A、JCX-500W、。1.2400mL12h。2L5L15minNDJ-1A[10]。22.12.1.12.0g·L-1、500W、pH6、870L·h-11。1710049、、、pHpH、、。pH、、、pH2、870L·h-1、300W75min97.28%。X74A1000-3770(2010)10-0032-0032009-12-292008K08-03、[e-mail]3610201010TECHNOLOGYOFWATERTREATMENTVol.36No.10Oct.,201032DOI:10.16796/j.cnki.1000-3770.2010.10.007120min97%。90min。90min。2.1.22.0g·L-1、500W、pH62。[11]。2。2.1.3pH0.1mol·L-1pH。2.0g·L-1、500W、870L·h-1pH3。345minpH660%pH123.0。。2.1.4500W、pH6、870L·h-14。4。[12]。4.0g·L-1120min。2.1.52.0g·L-1、pH6、870L·h-15。52Fig.2Effectofaerationonthedegradationofxanthangum020406080100120020406080100
 /min3pHFig.3EffectofpHonthedegradationofxanthangum020406080100120020406080100
 /min4Fig.4Effectofinitialconcentrationonthedegradationofxanthangum020406080100120020406080100
 /min1Fig.1Effectoftimeonthedegradationofxanthangum020406080100120020406080100
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 /min5Fig.5Effectofpoweronthedegradationofxanthangum33。[13]。、[14]。2.2[15][16]。2.0g·L-1、pH、、41。1pH、、、。pH、、。。pH2、870L·h-1、300W75min97.28%。3、pH、、、。、、、、pH55%。pH、、、。2.0g·L-1、pH2、870L·h-1、300W75min97.28%。。[1]JanssonPE,KeeneL,LindbergB.Structureoftheextracelluarpolysaccharidefromxanthomonascampestris[J].CarbohydrRes.,1985,45:275-282.[2],,.(XanthanGum)、[J].,2008(2):91-98.[3]MoorhouseR.Extracelluarmicrobialpolysaccharides:proceedingsofAmericanChemicalSocietySymposium45[C].Stanford:StanfordUniversityPress,1977:99-102.[4]DealICM,MorrisEA.Determinationofthemicrostructureoffermentationpolymerxanthangum:proceedingsofAmericanChemicalSocietySymposium45[C].Stanford:StanfordUniversityPress,1977:74-181.[5].[D].:,2006[6]MartinC,Cadmus,MoreyE,etal.High-temperature,salttolerantxanthanase[J].JournalofIndustrialMicrobiology,1989,4:127-133.[7],,,.[J].,2007,23(2):177-182.[8].[M].:,2005:62.[9],,.、、[J].,2009:82-85.[10],,,.[J].,2007,32(5):52-55.[11],,,.[J].,2005,17(3):549-553.[12],.[J].,2009(8):008-038.[13],,.[J].,2009,28(5):389-400.[14],,,.[D].:,2006,32(8):902-905.[15]TakahashiM,IijimaM,KimuraK,etal.Thermalandviscoelasticpropertiesofxanthangum/chitosancomplexesinaqueoussolutions[J].JournalofThermalAnalysisandCalorimetry,2006,85(3):669-674.[16]GoiaF,CirielloPP.Thecontainmentofoilspillsinporousmediausingxanthan/aluminumsolutions,gelledbygaseousCO2orbyAlCl3solutions[J].JournalofHazardousMaterials,2006,138(3):500-506.1Tab.1Orthogonalexperimentresults/minpH/L·h-1/W/%12345678912345454560606075757575.49073.42779.3575.93024624624693.13073.69061.45331.67729058087058087029087029058073.22379.50375.5476.28020030050050020030030050020073.18077.52077.5734.39386.7577.9361.7995.3667.5757.3597.2875.5765.2240361034DEGRADATIONPROCESSOFXANTHATEGUMINWASTEWATERFROMOILEXTRACTIONBYULTRASONIC－AERATIONLiLu,LiuMei,FuWeina,ZhaoJinglian（DepartmentofEnvironmentalEngineering,Xi'anJiaotongUniversity,Xi'an710049,China）Abstract:Degradationreactionsystemwascomposedbyasetofultrasoniccleanmachineandanairpump.Theeffectoffactorsincludingreactiontime,aerationrate,ultrasonicpower,initialconcentration,pHwereinvestigatedbysingle-factormethod.Theoptimalconditionsforthedegradationefficiencyofxanthangumandremarkablesequenceofthesefactorswereoptimizedbyorthogonalexperiment.Theviscosityreductionrateofxanthanguminaqueoussolutionreachupto97%intheoptimalconditionswithpHof2,aerationcapacityof870L·h-1,ultrasonicpowerof300Wandtreatmenttime75min.Theremarkablesequenceofthesefactorsis:initialpH,aeration,time,ultrasonicpower.WhenthepH,theairflow,ultrasonicpowerandtimewere2,870L·h-1,300W,75minrepectively，thedecreaserateofxanthanviscositycanreach97%.Keywords：wastewaterfromoilextraction;ultrasonicdegradation;xanthategumSTUDYONDECOLORIZATIONOFACTIVEREDX-3BBYMg-Al-FeHYDROTALCITE-LIKECOMPOUNDSANDITSCALCINEDPRODUCTNiuXiangnan,ZhaoYi,ZhuHongtao(SchoolofEnvironmentalScienceandEngineering,NorthChinaElectricPowerUniversity,Baoding071003,ChinaAbstract:AseriesofCO32--typeMg-Al-Fehydrotalcite-likecompounds(HTLCs)withdifferentMg-Al-Femolarratiosweresynthesizedbyco-precipitation,andpartsofthesynthesizedclayswerecalcinedunder500℃toobtainthecorrespondingMg-Al-Fe-Omixedoxides(HTLCs-500).TheMg-Al-Fehydrotalcite-likecompoundsandMg-Al-Fe-OmixedoxideswerecharaterizedbyXRDandFT-IRrespectively.Theeffectsofadsorptiontime,sorbentdosage,initialpHondecolorationefficiencyofsimulatedActiveRedX-3Bdyewastewaterwereinvestigated,andtheadsorptionmechanismwasdiscussed.TheresultsshowedthatthedecolorizationeffectwasthebestwhenMg,AlandFemolarratiowas30.60.4.Mg-Al-Fehydrotalcite-likecompoundsorcalcinedMg-Al-Fehydrotalcite-likecompoundshadanexcellentperformanceindecolorationofwastewater;bothweregoodwithawiderpHandthelatterpossessedmoreadvantages.TheadsorptionresultsofActiveRedX-3BonHTLCsandHTLCs-500wereconformedtotheLangmuirisothermequation,andthesaturatedadsorptionofActiveRedX-3Bwere362.9mg·g-1and889.2mg·g-1respectively.Thermalregenerationforre-useofHTLCs