萃取在含盐有机废水焚烧处理中的应用

27120071ActaScientiaeCircumstantiaeVo.l27,No.1Jan.,2007:(1975),,,,E-mai:[e-mail];*()Biography:MAJingying(1975),female,Ph.D.candidate,lecturer,E-mai:[e-mail];*Correspondingauthor,,,.2007.[J].,27(1):86-91MaJY,MaZY,YanJH,etal.2007.Applicationofsolventextractioninincinerationofsaltyorganicwastewater[J].ActaScientiaeCircumstantiae,27(1):86-91马静颖1,2,马增益1,*,严建华1,倪明江1,岑可法11.浙江大学热能工程研究所,浙江大学能源清洁利用国家重点实验室,杭州3100272.浙江建设职业技术学院城市建设工程系,杭州311231:2005-10-17:2006-11-16:2006-11-30:-.,5,30gL-11gL-11min,10min,97.12%99.89%.,,,99.00%.,60gL-1200gL-1,94.76%99.82%97.53%9992%..,,;700850,86.34%99.96%,90.16%99.99%.:;;;:0253-2468(2007)01-0086-06:X703:AApplicationofsolventextractioninincinerationofsaltyorganicwastewaterMAJingying1,2,MAZengyi1,*,YANJianhua1,NIMingjiang1,CENKefa11.StateKeyLaboratoryofCleanEnergyUtilization,ZhejiangUniversity,Hangzhou3100272.DepartmentofCityConstruction,ZhejiangCollegeofConstruction,Hangzhou311231Received17October2005;receivedinrevisedform16November2006;accepted30November2006Abstract:Evaporationresiduescontainhighconcentrationinorganicsaltsandnon-volatileorganiccompounds.Anextraction-desalinationmethodforpara-nitrophenol(PNP)wastewaterwaspresented.EffectofdifferentvolumeratioofsolventandwastewateranddifferentconcentrationofNaClwasdiscussed.IncinerationofthedesalinatedresiduewasincineratedinaFBCincinerator.Theexperimentresultsshowthatone-stageandtwo-stagePNPextractionrateisdecreasedwhenthevolumeratioofwastewaterandsolventisincreased.WhentheinitialconcentrationofNaClisincreasedfrom60gL-1to200gL-1,one-stageandtwo-stageextractionefficiencyisincreasedfrom94.76%and99.82%to97.53%and99.92%,respectively.Extractionefficiencyofn-octanolislessthanethylacetate.Theusedextractionsolventcanberecycled.Whentemperatureoftheincineratorisincreasedfrom700to850,combustionefficiencyofthesteamisincreasedfrom86.34%to99.96%,whilecombustionefficiencyofthesteamandtheresidueisincreasedfrom90.16%to99.99%.Keywords:organicwastewater;desalination;extraction;incineration1(Introduction)(GulyasH,1997),.(Oppelt,1987;Wertheretal.,1999)(Sevonetal.,1991).,(,1993;LemmerSetal.,2001;RoosACetal.,2003).,,,.,1:(LinWGetal.,2003).,..(2002),,CaOFe2O3.Grubor(1999),700.Kaul(1998)H,,.H,;.,,;,(Maetal.,2005).,,,,.,,.,(Chouaietal.,2000;Venkateswaranetal.,2004;,2003;Yasuhiroetal.,2000).,,,,.,.,-.(,2005),,,.2(Experiments)2.1实验装置1-.21-(1.,2.,3.,4.,5.,6.,7.,8.,9.,10.,11.,12.,13.)Fig.1Extraction-incinerationsystem(1.wastewatertank,2pump,3continuousextractor,4recycledsolven,t5supplementalsolven,t6organicphaseoutle,t7inorganicphaseoutle,t8steaminle,t9evaporator,10.steamoutle,t11.organicresidues,12.incinerator,13.wasteheatboiler)2(1.,2.,3.,4.,5.,6.,7.,8.,9.,10.,11.,12.)Fig.2Schematicofthelaboratory-scaleincinerator(1.extractionresidueinlet,2.organicwastesteaminlet,3.airinlet,4.rotameter,5.valve,6.airdistributor,7.fluidizedbedcombustor,8.thermocouples,9.fluegasoutlet,10filter,11.fluegasanalyzer,12.attemperator).,,,.,.8727,,,.,.,C6H5O3N,2883.87kJmol-1;,C4H8O2,2247.89kJmol-1;,C8H18O,528374kJmol-1..DX-120(Dionex),:IonPacCS12A(250mm4mm);:20mmolL-1;1.0mLmin-1;25L;CSRS-ULTRA.O2,COCO2NGA2000-MLT4CEMS.7530G(Agilent).291.0nm.2.2实验方法:1gL-130gL-1,,5,1min,10~60min,,2.:60100140200260gL-1,;3~11(60gL-1)60gL-1~260gL-1(7)..-:,.,-.,7007508008509005.,,.,13.5m3h-1,,20m3h-1.2.3分析方法c:c=1-C1C0100%(1),C0C1(gL-1).s.2(,2002).(POHCS)(DRE):DRE=Win-WoutWin100%(2),WinPOHCS,Wout.(ce):ce=[CO2][CO2]+[CO]100%(3),[CO2][CO]CO2CO.,CO.,(Sevonetal.,1991).,(ce).3(Results)3.1有机物的萃取3.1.1萃取剂对萃取的影响,1min,1.,;60min,.1Table1Extractionefficiencyofdifferentsolvent10min97.12%99.89%30min97.39%99.76%10min94.69%99.34%30min94.72%99.47%60min95.12%99.51%881:3.1.2水油比对萃取的影响3~113.,,,,.,,,11,90.27%98.72%,9188%99.49%.,99.00%,.3(a.,b.)Fig.3Extractionefficiencyatthedifferentvolumeratio(a.ethylacetate,b.n-octanol)3.1.3废水含盐浓度对萃取效率的影响4.,60gL-1200gL-1,94.76%99.82%97.53%99.92%.260gL-1(),.4Fig.4EffectoftheconcentrationofNaClonextractionefficiency3.2脱盐2.,.,,311,99.9%98.9%;60gL-1260gL-1,99.5%97.2%.2Table2TheremovalefficiencyofNa+throughextractions/(gL-1)s399.9%6099.5%599.8%10099.4%799.6%14099.4%999.4%20098.4%1198.9%26097.2%3.3脱盐浓缩后有机物的焚烧30gL-150gL-1(1.000g)5.700800,8634%99.95%;800900,;700850,9016%99.99%.89275Fig.5ceofincinerationofthesteamandincinerationofthesteamandtheextractionresidues4(Discussion)4.1有机物的萃取和脱盐,,,.,10min.,.,,.,,,,.,11,99.00%,.,,,,,..,(,2002).,,...,,.,,,,.,.4.2脱盐浓缩后有机物的焚烧.,,,.,,.,.850~900,,,.5(Conclusions)1).,-.2).30gL-11gL-1,5,1min,10min97.12%99.89%.,,,99.00%.3),60gL-1200gL-1,901:94.76%99.82%97.53%99.92%.4),.700850,86.34%99.96%,90.16%99.99%.5),,.(Acknowledgements):本课题得到了浙江省教育厅的资助,离子色谱分析和分光光度分析得到浙江理工大学理学院化学示范中心的帮助,在此一并表示感谢.:马增益(1970):男,博士,教授.主要从事废弃物无害化能源化利用和燃烧检测技术研究,E-mai:[e-mail]:BieRS,YangLD,ZhouD.2002.Influenceofadditivesonbedsinteringinfluidizedbedincineratortreatingwastesaltyliquid[J].JChemicalIndustryandEngineering,53(12):12531259(inChinese)BuLL,ChenS,QuanX,etal.2005.Studyofdisposalofpara-nitrophenolbywetairoxidationwithassistantmicrowave[J].ScienceinChina(SerEEngineering&MaterialsSc