您好,欢迎访问三七文档
当前位置:首页 > 商业/管理/HR > 企业文化 > DH3试剂对废水中微量Cu2的吸附动力学研究邓小兵
StudyontheadsorptiondynamicsoftraceCu2+incopper-containingwastewaterbyDH-3reagentDengXiaobing(HangzhouDadiEnvironmentalProtectionCo.,Ltd.,Hangzhou310004,China)DH-3Cu2+(,310004)[]DH-3Cu2+,Cu2+,Cu2+、pH、,DH-3Cu2+,pH2.5~6.5,1.0%,30min,Cu2+200mg/L1.0mg/L,。,Cu2+、。DH-3,Cu2+Cu2+CODCr,。[];;[]X703.1[]A[]1005-829X(2009)06-0038-04Abstract:Thecombinedwatertreatmentreagent,DH-3,isusedfortreatingcopper-containingwastewater,tostudytheadsorptionoftraceCu2+insolution.Theeffectsoftheconditions,suchastheconcentrationgradient,pHvalueandadsorptiontime,areinvestigatedrespectively.TheapplicablescopeofDH-3reagentfortreatingcopper-containingwastewaterisobtained.ItisfoundthatwhenthepHvalueiswithin2.5-6.5,thereagentdosage1.0%,andstirringtime30min.,thewastewatercontaining200mg/Lcoppercanbetreatedtowastewatercontainingbelow1.0mg/Lcop-per,reachingthesecondclassdischargestandard.Aftertheprocessingofrelevantdataoftheexperiments,theeffectofthereagentontheadsorptiondynamicparameters,suchastheadsorptionequilibriumconstant,andadsorptionspeedconstantofCu2+,etc.arealsoobtained.Inaddition,byusingDH-3reagentfortreatingmetalsurfacewastewa-terswiththreedifferentkindsofmetals,thetreatmenteffectsofthereagentontheCu2+andCODCrofthecopper-con-tainingwastewaterareverified.Thedirectionsofexistingproblemsandfurtherimprovementarepresented.Keywords:adsorption;copper-containingwastewatertreatment;calciumcarbonate,,、。,,pH9.0,,Cu2+。,,S2-。DH-3。,,,,,、,。,。11.1:,ZD-8800;,pHS-3A;,3510。:DH-3,[]8632007AA06130129620096IndustrialWaterTreatmentVol.29No.6Jun.,200938——2009-06,29(6);,A.R.;,A.R.。1.250.0mL,0.5000gDH-3,30min,,(Cu2+1000mg/L)(Cu2+1000mg/L)Cu2+。,、30min,1,5min,Cu2+CODCr。1.325℃。(1)Cu2+:10000mg/LCu2+100、200、300、500、1000、1500、2000、4000、6000mg/L,pH3.0(pH,);50mLCu2+,9150mL,0.5gDH-3,30min,Cu2+。(2):12(50mL)200mg/LCu2+,12150mL,pH1.0、1.5、2.0、2.5、3.0、3.5、4.0、4.5、5.0、5.5、6.0、6.5,0.5gDH-3,30min,Cu2+。(3):6(50mL)200mg/LCu2+,6150mL,0.5gDH-3,5、10、15、20、25、30min,Cu2+。22.1Cu2+Cu2+1。1,。,Cu2+ρ0Q1,(1)。Q=ρ0-ρGV(1):Q———,mg/g;ρ0———Cu2+,mg/L;ρ———Cu2+,mg/L;V———,L;G———,g。1,DH-3Cu2+100mg/g。()Pb2+,,Pb2+33mg/g。DH-3,Cu2+。Cu2+xq2。Freundlich〔2〕,(2):lgq=lgkμ+1nlgx(2):q———,mmol/g;x———,mmol/L;1/n———;kμ———。,lgqlgx,3。3kμ=0.735(1-1n)·V1n·G-1,1/n=0.225,,0.1≤1/n≤0.5,〔3〕。,DH-3Cu2+:DH-3Cu2+1201008060402001000200030004000500060007000Cu2+/(mg·L-1)/(mg·g-1)1Cu2+-2.01.51.00.50102030405060708090Cu2+/(mmol·L-1)/(mmol·g-1)21Cu2+Cu2+/(mg·L-1)10020030050010001500200040006000Cu2+/(mg·L-1)0.200.407.370267616100029005000Cu2+/(mmol·L-1)0.0030.0060.121.104.209.7015.8745.6778.74/%99.8099.8097.5786.0073.3058.9350.0027.5016.67/(mg·g-1)9.9819.9629.2743.073.388.4100110100/(mmol·g-1)0.160.310.460.681.151.391.571.731.57lgx-2.51-2.20-0.920.040.620.991.201.661.90lgq-0.80-0.51-0.34-0.170.060.140.200.240.2039——2009-06,29(6)-3-2-10123lgqlgx0.40.20-0.2-0.4-0.6-0.8-130.80.70.60.50.40.30.20.100.511.5lgtlg{ln(q∞q∞-qt)}43/min51015202530Cu2+/(mg·L-1)53.615.44.501.300.200.20/%73.2092.3097.7599.3599.9099.90/(mmol·g-1)0.2310.2910.3080.3130.3150.315lgt0.701.001.181.301.401.48lg{(lnq∞q∞-qt)}0.1200.4110.5810.704——2pH1.01.52.02.53.03.54.04.55.05.56.06.5Cu2+/(mg·L-1)37.27.441.500.20.20.470.580.320.680.580.300.10/%81.4096.2899.2599.9099.9099.7799.7199.8499.6699.7199.8599.95,,H+,pH。2,,pH2.5~6.5,99.75%,Cu2+0.20~0.68mg/L,pH6.5,,。2.3200mg/LCu2+,5、10、15、20、25、30min6,3。3,,25min,q∞(0.315mmol/g)。qtq∞ln(q∞q∞-qt)=ktn〔3〕,lg{ln(q∞q∞-qt)}lgt,4。lgkk=3.567min-n;n=0.960。ln(q∞q∞-qt),n,,。2.4(1)。Cu2+15.0mg/L,CODCr2500mg/L,。“”,、,,Cu2+0.42mg/L,CODCr1124mg/L。Cu2+;CODCr55.04%,,DH-3、,,,。(2)。,42.0mg/L,1.0%DH-3,7.2mg/L,82.8%,0.5mg/L。(3)EDTA。,EDTA、,20.0mg/L。1.0%DH-3,8.0mg/L,59.0%,0.5mg/L。,,DH-3Cu2+,。、、、。。2.2200mg/LCu2+,pH1.0~6.5,2。DH-3Cu2+40——!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Studyontheeffectofmicro-electrolysisandH2O2technologyonthepretreatmentofTDAwastewaterWangSanfan1,LiuHui1,ChenXia2(1.SchoolofEnvironmentandMunicipalEngineering,LanzhouJiaotongUniversity,Lanzhou730070,China;2.SchoolofArchitectureEngineering,LiaochengUniversity,Liaocheng252059,China)/H2O2TDA1,1,2(1.,730070;2.,252059)[]Fenton/H2O2,/H2O2TDA,:pH4~5、n()∶n()=1∶1、HRT70~80min、V(Fe2+)∶V(H2O2)=7∶1~9∶1。TDA,。[]2,4-;;Fenton[]X703.1[]B[]1005-829X(2009)06-0041-03Abstract:Thethreemethods,includingmicro-electrolysismethod,Fentonreagentmethodandmicro-electrolysiscombinedwithH2O2method,havebeencompared.Itisdeterminedtousemicro-electrolysisplusH2O2methodforpretreatingTDAwastewater.Thebestworkingconditionsareasfollows:iron/carbonratiois1∶1,pHfrom4to5,HRTfrom70to80min,thebestvolumeratiobetweenFe2+andH2O2from7∶1to9∶1.TheTDA’sconcentrationofeffluentqualitycanmeettherequirementsofsequentbiologicaltreatmentsystem,andensurethattheeffluentofbiologicalsystemscanreachthenationalfirstgradedischargestandardslevel.Keywords:2,4-toluylenediamine;microelectrolysis;Fentonreagent2,4-(TDA),,,。〔1〕Fenton〔2〕TDA,Fenton。、29620096IndustrialWaterTreatmentVol.29No.6Jun.,20093(1)pH2.5~6.5,1.0%,30min,200mg/L1.0mg/L,;Cu2+,DH-3,、、。(2),DH-3Cu2+100mg/g,,Cu2+。[][1]GB8978—1996[S].[2].()[M].:,2006:364-365.[3],.[M].:,1983:48-49.[](1968—),1990,,。
本文标题:DH3试剂对废水中微量Cu2的吸附动力学研究邓小兵
链接地址:https://www.777doc.com/doc-6535843 .html