树脂吸附法处理磺胺脒生产废水的工艺

1,2,3,4(1.,100871,E2mail:[e-mail];21,100101;3.,100037;4.,050018):,,2.:DRH2,.,COD86%,95%,86%,9918%.,.:;;;:X703:A:025023301(2003)0620520139:(KZCX22310):(1972),,,.:2002212226;:2003203210TreatmentofSulfanilamideProductionWastewaterbyResinAdsorptionTechniqueXuYueqing1,2,PengYingdeng3,ZhaoRenxing4(1.DepartmentofResources,EnvironmentandGeography,CollegeofEnvironmentalSciences,PekingUniversity,Beijing100871,ChinaE2mail:[e-mail];2.InstituteofGeographicSciencesandNaturalResourcesResearch,ChineseAcademyofSciences,Beijing100101,China;3.BeijingMunicipalResearchAcademyofEnvironmentalProtection,Beijing100037,China;4.CollegeofEnvironmen2talScienceandTechnology,HebeiUniversityofScienceandTechnology,Shijiazhuang050018,China)Abstract:Accordingtothecharacterofsulfanilamideproductionwastewater,inthispaper,therecoveryprocessofsul2fanilamide,sodiumnitrateinwastewaterresultingfrommanufacturingsulfanilamidewasdevelopedbyusingmacroporousresin.Theconditionsoftheresinadsorptionanddesorptioncapacitywereinvestigatedandtheoptimalparametersweredetermined.Theresultsofexperimentindicatedthatthistechniquewassuitableforremovalofsulfanilamidefromwastewater.About86%CODremovalwasobtainedundertheoptimizedadsorptionconditions,about86%sulfanil2amideand95%sodiumnitratewererecoveredfromwastewaterforpossiblerecyclingtothemanufacturingprocessandtherecoveredsulfanilamidepspurityreached9918%.Theadsorptioncapacityofresinremainedconstantduringtherepe2titionprocessofadsorptionanddesorption.Thistechniquenotonlyeliminatestheenvironmentalpollutionbutalsoob2taindistincteconomicbenefit.Keywords:resinadsorption;sulfanilamidewastewater;adsorption;desorption,[16]..,,,,,.1111(SG),,:H2NSO2NHCNHNH2246200311ENVIRONMENTALSCIENCEVol.24,No.6Nov.,2003©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.SG,(SN)Na2CO3.:2H2NSO2NH+2H2NCNHNH2HNO3+Na2CO32H2NSO2NHCNHNH2+2NaNO3+2NH3+CO2SG,(),.,NaOH,017018MPa8h,SN,85%SN,SN1,75%SN,.2SN3,,.112,pH11,COD13000mg/L,1722g/L,NaNO3230g/L,Na2CO360g/L,NaOH.2211,.DRH,,2,..212,,1.1Fig.1Thetechnicalflowchartofsulfanilamideproductionwastewatertreatment33112(1)pHpH2,5,7,1011,(250mL,50mL,1712g/L,DRH10mL,23),pH,2.,,04124©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved..,,,,.pH5,,pH7,,pH511,.pH11,,,pH11.2pHFig.2EffectofpHvalueontheresin2adsorptioncapacity(2)(250mL,50mL,1712g/L,DRH10mL,pH11),2330405060,3.,23.,.,;,,.3Fig.3Effectoftemperatureontheresin2adsorptioncapacity(3),2,.,3.(40),4%NaOH1mol/L,,,1.,34%NaOH,1mol/L.13/gL-1Table1Resultofdesorptionbythreedesorbingagents/gL-14%NaOH1mol/L9188615251533122(1)20mL/h40mL/h60mL/80mL/h(24mm600mm,DRH10mL,23,pH11),4.,,.,.,,,;,.4Fig.4Effectofthewastewaterflowontheresin2adsorptioncapacity(2)2%4%6%8%NaOH(40,20mL/h),,5.,,1416©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,.,,,,4%6%.5Fig.5Effectofthedesorbingagentpsconcentrationontheresin2desorbingcapacity(3)5%NaOH40607080,(10mL/h).,(6),,80.6Fig.6Effectoftemperatureontheresin2desorbingcapacity(4)5%NaOH,80,7.,,.10mL/h.3132,(:pH11,20mL/h,23;:5%NaOH,80,10mL/h)DRH20,,(8).,13,191g/L,88122%;5%NaOH,3,97156%,86%.SN==88122%97156%=86%7Fig.7Effectofthedesorbingagentpsflowontheresin2desorptioncapacity8Fig.8Testonthestabilityoftheresin2adsorbing2desorbingcapacity314,pH,..ZBG17018289,9918%.,:H2NSO2NH2.315NaNO324124©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,NaNO3,Na2CO3NaOH,,NaNO3.,GB/T4553293.4,,.411,1t315m3,1m3:86%,90%.80%NaNO395%,m3(SN)1318kg,NaNO321815kg.m323.2m3/mgL-1Table2Productsrecoveredfrompercubicmeterwastewater/kg/kg-1/(SN)131830414(NaNO3)218152155469603m3Table3Costoftreatmentofpercubicmeterwastewater/kg/kg-1/(65%)1602125360()10330(36%)28015148000107560105504/kWh0185/kWh-13144000012/m-301815/(d)-16616/1918544,1m3416/m3.1000t,14516104(4).,,3.1000t,75104,.4Table4Yearlybenefitofwastewatertreatment/m3/tNaNO3/t/104/104/10435004813764173361901414516412,(GB897821996),COD86%,95%,.5,,,(ZBG17018289,GB/T4553293),COD86%,95%,.,,.:1,,.DSD.,2002,18(1):4550.2,,..,2001,18(1):5157.3,,.1,4-.,2000,16(2):140144.4,,..,2000,16(2):134139.5,,.-.,2000,16(3):207212.6,,..,2000,16(1):6671.7,..:,1990.8.().:,1989.407413.9..:,1990.363365.3416©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.