沸石柱吸附钨冶炼废水中氨氮的试验研究李健昌

DOI10.3969/j.issn.1009－0622.2013.06.011364204、、、。2.72BV50mg·L-198mg·L-1C/C0=0.30.15126BV、43BV157BV、46BV8%NaCl。TF841.1TF09A286201312Vol．28No．6Dec.2013ChinaTungstenIndustry-ATP、、[1]。“”。、、、[2]。[3-5]。。。SiO2、Al2O3、H2O[6]。[7]。Naz+Mi→Mz+Naizi。。NaCl80%[8-9]。。。98mg·L-1。。11.150mg·L-198mg·L-1。5471g0.27～1.4mm。75mmPVC。、、、。。2013－10-201985-。28NaCl。1。122.1h=90cmV=180ml·min-12.72BVC0=50mg·L-1。2。2《》GB8978-199615mg·L-1C/C0=0.3CNH4-NC0NH4-N。2157BV57.7h4.58mg·g-1126BV46.3h3.89mg·g-1。[7]2.1mg·g-13.03mg·g-1[10]。2.22.72BV、4.58BV、7.24BV3。33C/C0=0.32.72BV、4.58BV7.24BV156BV、121BV93BV。。。M·Sarioglu[11]0.5ml·min-1、12BV。Booker[12]10min6min。。2.3pH=9.242.72BV4。4C/C0=0.1543BV46BV。15.8h2.83mg·g-116.9h。3.02mg·g-1。40.20.40.60.89012060300/BVC/CO0.20.40.60.820016012080400/BVC/CO2.72BV4.58BV7.24BV0.20.40.60.820016012080400/BVC/CO75300400700PVC20075275466pH。2.4NaClNH4Z+Na++OH-NaZ+NH3+H2ONH4+NH3NH3。APTNaClNH4Cl。。。NaClNaCl2.72BVNaCl5。5NaCl5NaClNaCl8%NaCl1.1g/L。2.5、8%NaCl2.72BV50mg·L-16。61—2—3—4—5—6—6C/C0=0.3112BV、137BV3.46mg·L-1、4.23mg·L-184BV、107BV2.59mg·L-1、3.30mg·L-1。1。11。。[13]0.34mol/LNaClNaOHKoon[14]pH=12.5。Semmens[15]。Koon150～180BV12h4～20BV·h-1。NaCl。2.6。7、8。7、80.9997/BV/mg·g-1/%1263.891123.4689.0842.5966.61574.581374.2387.21073.3068.0036912/BV30060090012001500/mg·L-16%8%10%040801201602000.20.40.60.8C/C0/BV4728780.9963NH4+。0.999NH4+。1.43mg·L-10.5h1.41mg·L-198%。312.72BV50mg·L-198mg·L-1C/C0=0.30.15126BV、43BV157BV、46BV。28%NaCl。3。[1].[J].200723142-44.[2].[J].20133851-3.[3].[J].201338375-79.[4]COLELLAC.IonExehangeEquilibriainZeoliteMinerals[J].MinerDePosita19963l2554-562.[5].[J].20133948-10.[6].[M].2005.[7]．[J].2010611216-222.[8]JORGENSENTCWEATHERLEYLR.Continuousremovalofammoniumionbyionexchangeinthepresenceoforganiccompoundsinpackedcolumns[J].ChemTechnolBiotechnol20068171151-1158.[9]HEDSTROMAAMOFAHLR.Adsorptionanddesorptionofammoniumbyclinoptiloliteadsorbentinmunicipalwastewatertreatmentsystems[J].EnvironEngSci20087153-61.[10].[D].2004.[11]SARIOGLUM.RemovalofammoniumfrommunicipalwasteusingnaturalTurkishDogantepezeolite[J].SeparationandPurificationTechnology2005411-11.[12]BOOKERNA.AmmoniaremovalfromsewageusingnaturalAustralianzeolite[J].WatSciandTechnol199634917-24.[13].[J].2012682715-2719.[14]KOONJH.Optimizationofammoniaremovalbyionexchangeusingclinoptilite[M].CaliforniaEnvironmentProtectionAgencyUniversityofCaliforniaBerkerly.1971.[15]SEMMENSMKLIEVEJSCHNOBRICHD.ModelingAmmoniumExchangeandRegenerationonClinoptilolite[J].WaterResearch1981156655-666.0.00.51.01.52.0t/h0.40.81.21.6/mg·g-10.00.51.01.52.0t/h0.40.81.21.6/mg·g-1524828ManufacturingProcessofUltra-FineExtrudingRodsbyWC/CoCompositePowderYANGShou-da,ZHANGShou-de,CHENXian-qiang(FujianJinxinTungstenCo.,Ltd.,Longyan364002,Fujian,China)Abstract:Thispaperstudiesthemanufacturingprocessofultra-fineextrudingrodsusingnano-compositepowdermanufacturedbywaterdissolving-chemicalmethod.AppropriatecompositeinhibitorisaddedtotheNano-compositepowdercontaining12%Cobalt.Thentechnologiesofwet-milling,extrusionforming,highpressuresinteringareappliedtotheNano-compositepowder.Technologyparametersofextrudedrodsmadebycompositepowderarestudiedbycomparingthealloypropertiesunderdifferentwetmillingtimeandsinteringtemperatures.Theresultsshowhighqualityrodscanbemadeoutofcompositepowderbyusingextrusionformingmanufacturingtechnique.Thehardness,flexuralstrengththealloyrodwith12%cobaltattains92.8RAand4200MPa.TheWCgrainsizeislowerthan0.4μm.Thepropertiesof12%Cobaltcontentalloyrodsarehardnesscouldbemorethan92.8HRA,bendingresistanceupto4200MPa,tungstencarbideparticlegrainsizesmallerthan0.4μm.Keywords:nano-sizedcompositepowder;extrusionformingmanufacturingtechnique;ultra-fineparticle;extrudedrodsExperimentalResearchonAmmonia-NitrogenAdsorptionintheTungstenSmeltingWaste-waterbyZeoliteColumnLIJian-chang(ZijinCopperIndustryCo.Ltd.,Longyan364204,Fujian,China)Abstract:Thispaperstudiesthedynamiclaw,renewablenature,breakthroughcurve,hydraulicloadcurveandadsorptionkineticsofammoniawastewaterandtungstensmeltingwastebyzeoliteadsorption.Thesimulationdeviceisbuiltbyzeolitepackedcolumn.AtthepenetrationpointsofC/C0=0.3and0.15,thenaturalzeolite'swaste-watercapacityare126BVand43BVrespectivelywhilehandlingsimulatedwastewaterwithammoniaconcentrationof50mg·L-1andtungstensmeltingwastewaterwith98mg·L-1andthewaterspeedis2.72BV.Thehandlingwastewatercapacitiesofthemodifiedzeoliteare157BVand46BVrespectively.Thedisposedwatercapacityreduceswiththeincreasinghydraulicloading.NaClsolutionwiththeconcentrationof8%isappliedforsaturatedzeoliteadsorptionforitsfavorableeffectsandlowcost.Adsorptioncapacityreduceswhenuseregeneratedzeolite.Dynamicanalysisrevealsthatzeoliteisanoptimalmaterialforammoniawastewateradsorption.Keywords:zeolite'scolumn;ammonia-nitrogen;adsorption;tungstensmelting;wastewaterContinuousDeterminationofLead,ZincandBismuthContentsinTungstenMineralProductsbyAtomicAbsorptionSpectrometryZHONGDao-guo(GanzhouNonferrousMetallurgyResearchInstitute,Ganzhou341000,Jiangxi,China)Abstract:Thispaperstudiesthecontinuousdeterminationmethodofleadzincandbismuthcontent