大孔树脂吸附法处理含硝基苯类工业废水试验研究李树鹏

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INDUSTRIALWATER&WASTEWATERVol.42No.5Oct.,2011,,,,(,110021),,。[1-3],“”,。:,,,,:XSA-6:20℃,3.0BV/h,pH1,28BV。40~50℃,1.0BV/h,4%(1∶4),3BV;80.25%。(1.2BV)87.57%,;,。,,,。:;;;:X703.1:A:%1009-2455(2011)05-0032-06TreatmentofindustrialwastewatercontainingnitrobenzenecompoundsbymacroporousresinadsorptionLIShu-peng,FANGHu,LIXue-song,XUWei-chang,YANHai-sheng(ShenyangResearchInstituteofChemicalIndustryDesignandEngineeringCo.,Ltd.,Shenyang110021,China)Abstract:Inordertogettheparametersanddesorptionconditionsformacroporousresinadsorbingnitrobenzenecompounds,andfindtherecoveryrateofthesaidcompounds,atestofnitrobenzenecompounds-containingindustrialwastewatertreatmentbymacroporousresinwascarriedoutwiththesubsequenttreatmentofthedesorptionsolutionstudiedatthesametime.Theresultsshowedthat:theoptimalconditionforthetreatmentofindustrialwastewatercontainingnitrobenzenecompoundsbymacroporousresinXSA-6was:theadsorptiontemperaturewas20℃,theflowvelocitywas3.0BV/h,thepHvaluewas1,andtheamountofwastewaterwas28BV.Whenthedesorptiontemperaturewas40-50℃,theflowvelocitywas1.0BV/h,thedesorptionreagentwas4%sodiumhydroxidemixedwithindustrialmethanol(volumeratiooftheabovetworeagentswas1∶4),thedosageofthecompoundswas3BV,therecoveryrateofnitrobenzenecompoundsinthealkaliwashingdesorptionsolutionwas80.25%atthestageofsodiumhydroxidewashing;andtherecoveryratereached87.57%atthefirsttwostagesbeforethemethanolwashing(1.2BV)andthemethanolwouldbeappliedinthenextbatch;thedesorptionsolutionattheresttwostageshadalowernitrobenzenecompoundsconcentration,whichcouldbeusedtopreparedesorbentforthenextbatch.Theadsorptionanddesorptionperformanceofthesaidresinwerestable,reliableandrepeatable,therefore,itwasprovedtohavecertainapplicationprospectinchemicalindustry.Keywords:macroporousresin;adsorption;desorption;nitrobenzenecompounds:2011-03-28;:2011-07-30·32·1Tab.1QualityofwastewaterfromtheworkshopsectionofmethylationacidrefiningpHρ(CODCr)/(mg·L-1)ρ()/(mg·L-1)/0.8~1.12727~2927605~790450~5002Tab.2Performanceparametersofresin/%/(m2·g-1)/m/(g·mL-1)/(g·mL-1)/(mL·g-1)XSA-65011009×10-90.551.211.11XSA-75090011×10-90.571.201.121.3.22.5g0.5g,100mL,25℃11h。,。,。1.3.33、4、5、67g100mL,3.5h,20、2530℃。,。1.3.4(1):20mL,,20℃,1、2、34BV/h,,。(2):、、。1.4CODCr;-;;pH。1.5(SHA-B);(C184173C);(HH-ZK8);(SL1002K);pH(PB-10)。22.13,,4。4(R):(1)CODCr:pH>>>,:pH1,100mL7g,XSA-6,3.5h。,[4-6],。-,,,。,,,[7-8]。,。,,。11.1,,。1。1.22,2。1.31.3.1、、pH4,。,,,:·33·INDUSTRIALWATER&WASTEWATERVol.42No.5Oct.,20113Tab.3Schemesandresultsofexperiments(A)(B)/(g·100mL-1[])pH(C)(D)/hρ(CODCr)/(mg·L-1)CODCr/%ρ()/(mg·L-1)/%1XSA-6311.588668.211684.22XSA-6532.5104362.517676.03XSA-6753.5131552.817775.84XSA-7333.5131252.922868.95XSA-7551.5167239.931157.56XSA-7712.586169.18.5498.87XSA-6352.5184833.635751.28XSA-6513.565176.624.396.79XSA-6731.588368.312582.94Tab.4AnalysisofexperimentalresultsCODCr/%ABCDABCDKi161.251.671.358.878.768.193.274.9Ki254.059.761.255.175.176.775.975.3Ki359.563.442.160.876.985.861.580.5R7.211.829.25.73.617.731.75.6/%1Fig.1Curvesofadsorptionkinetics24681012t/hqt/(mg·g-1)6050403020100r=200r=100r=405Tab.5Correlationofthecoefficientsofadsorptionvelocityequationr/(mL·g-1)q0/(mg·g-1)B/minR24010.433-1.87240.984510020028.14656.599-18.048-35.8560.98000.9779(2):pH>>>。:pH1,100mL7g,3.5h,XSA-6。,(25℃)(120r/min),CODCr443mg/L7.04mg/L,84.1%99.0%。2.2,r(/)40、100、200,t,qt,1。1,,r,q0,q0rq0=0.2658r,R2=0.9999。qt=0.2658r·exp(B/t),B。5。5,r,qt;t,qt。r,lnqt1/t,R25。2.32,Freundlichlnqe=1/n·lnCe+lnKf2,6。6,XSA-6Freundlich,XSA-6。Freundlich,Freundlich,6,Kf,·34·6XSA-6FreundlichTab.6FreundlichadsorptionisothermofnitrobenzenecompoundsaboutXSA-6resin/KFreundlichKfnR2293lnq=0.3214lnC+1.77735.913.110.9877298lnq=0.3405lnC+1.67405.332.940.9958303lnq=0.3391lnC+1.62835.102.950.99173Fig.3Effectofflowvelocityonadsorptioncapabilityofresin20406080100/BVρ()/(mg·L-1)80060040020001BV/h2BV/h3BV/h4BV/h4Fig.4Desorptioneffectofdifferentdesorbents246810121416/BVρ()/(g·L-1)30252015105023Fig.2Adsorptionisothermsofnitrobenzenecompoundsunderthreedifferenttemperatureconditions515253545556575ρ()/(mg·L-1)q0/(mg·g-1)252219161310293K298K303K。2,Freundlich。2.4732mg/L、pH1、20℃,1、2、3、4BV/hXSA-6,3。,。,,,。GB8978—1996《》,5mg/L,3,1、2、34BV/h,5mg/L45、34、28、23BV。,4XSA-649.70、43.05、42.8530.95mg/g。,。,,,3BV/h。2.5320mL,3,:;:+4%(4∶1);:4%,(1∶4)。4。4,,99.3%,。,。,,。4%。2.635mg/L,20mL(),2.5,0.5、1、2BV/h,30℃,3BV(0.6BV4%,2.4BV。)。5。5,,,,,,,:·35·INDUSTRIALWATER&WASTEWATERVol.42No.5Oct.,20115Fig.5Desorptioncurvesunderdifferentflowvelocity0.61.21.82.43.03.6/BVρ()/(g·L-1)18151296300.5BV/h1.0BV/h2.0BV/h6Fig.6Desorptioncurvesunderdifferenttemperature0.61.21.82.43.03.6/BVρ()/(g·L-1)181512963030℃40℃50℃7Fig.7Desorptioncurvesunderdifferentdosageofdesorbent12345/BVρ()/(g·L-1)18151296302BV3BV4BV,5,。,,,。,,1.0BV/h。2.730、40、50℃33。:1.0BV/h、3BV。6。6,,,,6,。,,。,,40~50℃。2.8,4%。2、34BV。7。7,2BV,8000mg/L,,。3BV,200mg/L,。4BV,26mg/L,,。3BV。2.90~0.6BV,,,,82.3%,。80.25%。,。0.6~1.2BV1.2~1.8BV,,,。,;,,92.4%,。87.57%。1.8~2.4BV2.4~3.0BV,,。2.10,-,,7,。·36·7-Tab.7Datafromtheexperiment

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