利用粉煤灰合成沸石处理重金属污水研究

:2003-01-20:(1963-),,,,,(),:(49832005)1,1,2,2,2(1.,100083;2.,430074):Cu2+Pb2+Cd2+,9.560.890.25mgöl,3hpH,,Cu2+,6.49mgöl,:;;;:X703:A:1001-2141(2003)09-0026-05,,,,,,30Al(OH)3,,,,SiO2A12O3,1985Ho11er[1],[2-3],,,Cu2+Pb2+Cd2+3,11.11.1.1,11W(B)%SiO2Al2O3Fe2O3MnOCaONa2OK2OTi2OP2O5MnOSO349.2034.424.160.845.220.661.221.290.450.030.044.401.1.2,211,NaPl65%,15%22,NaPl25%,55%,,pH[4],,,,2,pH7,1.1.3CuSO4()Pb(NO3)2CdCl22H2OCu2+Pb2+Cd2+1.2THZ-822,1.350ml,,,,,,THZ-82,,259200391.41.5(l)25pH7,2,1gCu2+Pb2+Cd2+3,,(2)25pH,2,Cu2+1g,,,pH(3)25pH7,2,0.20.51.01.5g,Cu2+,,(4)25pH7,121g,,,,Ceqe:qe=Co-CemV1000:qe,mgög;C0Ce,mgöL;V,mL;m,g(5)25pH7,Cu2+1g,,,,Ceqe22.125pH7,Cu2+Pb2+Cd2+3200205mgöL,0.51.02.03.0h2121,Cu2+Pb2+Cd2+30.5h,32(h)(mgöL)(%)Cu2+Pb2+Cd2+Cu2+Pb2+Cd2+0.52.900.570.07198.5597.1598.581.02.040.550.08098.9897.2598.402.01.330.520.08499.3497.4098.323.00.250.510.06999.8897.4598.62197%,3hCu2+Pb2+Cd2+99.88%97.45%98.62%,,Pansi2ni[5]Pb2+20mgöL1L1g,2hPb2+0.2mgöL,99%,4g,10minPasini1g2gCr3+1030mgöL,Cr3+2.0mgöL[6]2.5gpH5.34Cr3+50mgöL,10minCr3+99.2%,lh99.9%,,,3h2.2pHOH-,pH25pH47,Cu2+200mgöL,33,pH4,Cu2+66.80%,pH7,Cu2+99.88%,729:3pHpH(mgöL)(mgöL)(%)Cu2+4720020066.400.2566.8099.88pH,pH,,,,2.325pH7,Cu2+200möL,0.20.5l.01.5g,424(g)(mgöL)(mgöL)(%)Cu2+0.20.51.01.520020020020098.0075.812.501.0351.0062.1098.7599.49242,,Cu2+,0.2gl.5g,5l.00%99.49%,1.0g,98%2.4Cu2+Pb2+Cd2+3200205mgöL,25pH7,55(mgöL)12Ce(mgöL)qe(mgög)Ce(mgöL)qe(mgög)Cu2+20016.869.l60.949.95Pb2+20.04.060.800.350.98Cd2+5.00.0050.250.0110.255,l23,Cu2+:9.169.95mgög,9.56mgög;Pb2+:0.800.98mgög,0.89mgög;Cd2+:0.25mgögCu2+Pb2+Cd2+,5,3,,Cd2+,0.25mgög;Cu2+,210.79mgög;Pb2+,210.18mgög,3,212.5Cu2+200mgöL,25pH7,66(mgöL)Ce(mgöL)qe(mgög)Cu2+20070.206.496,Cu2+6.49mgög,5Cu2+9.169.95mgög,2.673.46mgög,,,3Si4+Al3+,,,,,,,,80%,[7],,,,,:1),[8]:8225(1),,,,;,(2),,,,,,:aA+bBxZaAx+bBKA-B=[B]b[Ax]aö[A]a[Bx]b:KA-B,AB;AxBx,,(s)(c),ZAZBMAZ+AMBZ+B:ZBuZ+AA(s)+ZAuZ+BB(c)ZZBuZ+AA(c)+ZAuZ+BB(s),MAZ+APb2+Cu2+Cd2+;MBZ+BCa2+Ba2+K+Pb2+Cu2+Cd2+Ca2+Ba2+,,K+,K+,,,Ca2+Ba2+K+,,2),,,NaOH,,pH,:H2SiO3+OH-ZHSiO-3+H2OHSiO-3+OH-ZSiO2-3+H2O,,OHH+[9],:-OH--OH--OH--O--O--O-+3H+,,Pb2+Cu2+Cd2+,(),,OH-,,,3),,,,,5001000m2ög[10],0.160.35m2ög[11],,,,4,,,,Al(OH)3,,,SiO2Al2O3,,,,,,,,,,,,,,5929:,0.5h97%,3hpH,,,,,,,Cu2+Pb2+Cd2+9.560.890.25mgög,3,21,Cu2+,Cu2+6.49mgög,,,,61HollerH.,WirschingU.Zeoliteformationfromflyash.Fortschr.Miner.1985,63(1):2143.2MurayamaN.,YamamotoH.,ShibataJ.ZeoliteSynthesisfromCoalFlyAshbyHydrothermalReactionUsingVariousAlkaliSources.PROGRSWorkshoponNovelProductsfromCombustion,Morella,Spain.2001,137142.3SteenbruggenG.,HolimanG.G.TheSynthesisofZeolitesfromFlyAshandThePropertiesoftheZeoliteProducts.JournalofGeo2chemicalExploration.1998,62(13):305309.4,..:,2000,116,123,134.5,..,1997,14(3):4049.6,,,..,1997,15(3):1315.7,,..,2001,21(12):912.8,,..:,1993,5058.9..,1997,16(7):3033.10,..:,1986,235242.11.().:,2000,485490.333333333333333333(16)1.5h,,:PHB,,;,(DPB)PHB,;,PHB,,PHB,2.4l.l,1.21.3SBR(AöOöAöO),:SBR,,PHB,,PHB,,1.4,PHB,,,A2öOUCT,PHB,,,3,PHB,SBR(AöOöAöO),NO3-,(DPB)41,1.:,1998.2..,1989.3,.A2öO.,2000,16(7):1115.4K.ÁSTGAARDetal.Anoxicbiologicalphosphorusremovalinafull2scaleUCTprocess.Wat.Res,1997,31(11):271922726.0325molecularconnectivityindexesUsingtheSynthesizedZeolitefromFlyAshtoTreatHeavyMetalsfromWastewatersGuoYonglong1,WuQiang1,WangYanxin2,YangZhihua2,CaiHeshen2(1.TheMinistryofEducationKeyLaboratoryofCoalResource,ChinaUniversityofMiningandTechnology,Beijing100083;2.EngineeringSchool,ChinaUniversityofGeosciences,Wuhan430074)Abstract:Inthispaper,weusedthesynthesizedzeolitefromflyashtoremoveCu2+,Pb2+andCd2+fromartificialwastewaters,theadsorptioncapacityofsynthesizedzeolitewas9.56,0.89and0.25mgögrespectively.Experimentalresultsin2dicated,theadsorptionequilibriumofusingthesynthesizedze2olitetotreatoriginalwastewaterscouldbereachedinabout3h,theremovalratedecreasedwithdeclineofthepH,there2movalrateincreasedwiththeincreasesofzeoliteusedinexpei2ment.Underthesamecondition,theadsorptioncapacityofflyashwas6.49mgöginremovingtheCu2+,lowerthanthezeolitesynthesizedfromflyash.Keywords:flyash;synthesizedzeolite;wastewatercon2tainingheavymetals;adsorptionNitrogenFluxesandSeasonalChangeattheSediment-WaterInterfaceinNorthernYangtzeRiverEstuaryZhangXingzheng,ChenZhenlou,Liujie,DengHuanguang,XuShiyuan(EastChinaNormalUniversity,Shanghai200062)Abstract:WestudiedINfluxesandseasonalvarietiesatthesediment2waterinterfaceinnorthernYangtzeriver.Be2causethefluxesofINatthesediment2waterinterfaceareinflu2encedbyseveralenvironmentalfactorsaswellaschangeofseasons,thefluxesofINhavegreatdifference.Foronside,sedimentsattheestuaryarethepoolofnitrateandammoniumandcanalleviatemuchnitrogenload,foranother,theestuaryecologysystemarebrittleanddynamic.Thesubstanceex2changeswillbeinfluencedmuchwiththechangesoftheseen2vironmentfactors,andsedimentsmayprobablycontaminatedtheoverlyingwater.Theresearchshowed:Someenvironmentalfactorssuchasbiology,temperature,DOetal,havemajorin2fluencesonseasonalchangesofnitrogenfluxes,whilesomeotherfactors,suchasthesalinity,Ehetal,haveminorinflu2encesonse