超临界水氧化技术在城市污泥处理中的应用方明中

24320085WATERRESOURCESPROTECTIONVol.24No.3May2008　　:(1982—),,,,。E-mail:[e-mail],,,(,　510006):综述了超临界水氧化(SCWO)技术的基本原理和工艺、在城市污泥处理中应用的国内外研究进展,并就SCWO处理城市污泥的前景作了展望。SCWO技术处理城市污泥,污泥中有机物的去除率可达99.9%以上,污泥氧化后的最终残余固体产物的容积仅为浓缩污泥容积的1.2%左右,反应后剩余收集液的COD质量浓度小于10mg/L,处理后的残留固体还可以进行磷酸盐和重金属回收。:超临界水氧化;城市污泥;污泥处理技术:X799.3　　　:A　　　:1004-6933(2008)03-0066-03ApplicationofthesupercriticalwateroxidationtechniquetomunicipalsludgetreatmentFANGMing-zhong,SUNShui-yu,LINChu-juan,ZHENGXue-dan(FacultyofEnvironmentalScienceandEngineering,GuangdongUniversityofTechnology,Guangzhou510006,China)Abstract:Theprinciples,process,prospectsandapplicationofthesupercriticalwateroxidation(SCWO)techniquefortreatingmunicipalsludgeisreviewed.TheSCWOtechniquecanremove99.9%oforganicsubstances,andtheCODofresidualliquidfromtreatedsludgeislessthan10mg/L.Thefinalvolumeofresidualsolidisonly1.2%oftheoriginalcondensedsludgevolumeandphosphateandheavymetalscanberecoveredfromit.Keywords:supercriticalwateroxidation;municipalsludge;sludgetreatmenttechnique　　21,,,,。N、P,30%～40%。,、。,,。,,,[1]。,。,。(SupercriticalWaterOxidation,SCWO),、、、。,。1　SCWO1.1　374℃22MPa,[2]。,,、、、、。,,,0.3g/cm3[3]。,·66·[4]。,,,,。99.9%。,。1.2　SCWOSCWO2080Modell[5]。,、,,,CO2、N2、H2O。O2。。CO2,H2O,,,。,,,,,[3]。2　SCWO2.1　SCWO1。(、、),,SCWO,,。、,。1　SCWOSCWO。SCWO、,。ModellDevelopmentCorp.,Eco-WasteTechnologiesModarInc.、。20014,,9.8t/d,,[6]。2.2　,。[7],、、、。,,325%,,。。26MPa、420℃、155s(325%),COD10mg/L,,,1.2%。[8]。,10;Arrhenius,、,;,,。24MPa,(39.11±2.216)kJ/mol,(45.2±17.2)s-1,±8%。[9],,SCWO。,SCWO,21319.15kJ/kg。400℃、26MPa,94.3%,3.0%,———。2.3　MotonobuGoto[10]200～210℃,H2O2,·67·,、,SCWO,,。,(H2O2)。SCWO,TOC,。,。Svanstrom[11]10%,,。CO2,O2。。,。Stendahl[12]。,1～10μm,。,,。。,。,,。,,。,10%。Stark[13]、SCWO,SCWO。,。,300℃,SCWO1mol/L。,SCWO。0.5mol/LHCLSCWO。3　SCWO:①。SCWO,,,。②。,。SCWO,,[14]。,,。,[15],。,。,,。③,,。,,CO2[6]、[16][10],,。④,,。:[1],,.[M].:,2005:18.[2],.[M].:,2005:71.[3],.[M].:,2001:68,73.[4]KRITZERP,DINJUSE.Anassessmentofsupercriticalwateroxidation(SCWO):Existingproblems,possiblesolutionsandconcepts[J].ChemicalEngineeringJournal,2001,83(3):207-214.[5]MODELLM.Processingmethodsfortheoxidationoforganicsinsupercriticalwater:US,4543190[P].1985-09-24.[6]GRIFFITHJW,RAYMONDDH.Thefirstcommercialsupercriticalwateroxidationsludgeprocessingplant[J].WasteManagement,2002,22(4):453-459.[7],,.[J].,2004,20(9):9-13.[8],,,.[J].,2005,39(1):104-108.[9],,,.[J].,2006,20(3):379-384.[10]GOTOM,NADAT,OGATAA,etal.Supercriticalwateroxidationforthedestructionofmunicipalexcesssludgeandalcoholdistillerywastewaterofmolasses[J].JournalofSupercriticalFluids,1998,13(3):277-282.[11]SVANSTROMM,MODELLM,TESTERJ.Directenergyrecoveryfromprimaryandsecondarysludgesbysupercriticalwateroxidation[J].WaterScienceandTechnology,2004,49(10):201-208.[12]STENDAHLK,JAFVERSTROMS.RecyclingofsludgewiththeAquaReciprocess[J].WaterScienceandTechnology,2004,49(10):233-240.(下转第94页)·68·。,。a.。、;,500t/(km2·a);,25°;,[14]。b.。,;、、;,TP0.02mg/L,TN0.2mg/L[2]。c.。、;、,;,,。3　　a.,,,。,。b.。,,,,。。,。:[1]COSTANZAR,D'ARGER,DEGROOTK,etal.Thevalueoftheworld'secosystemservicesandnaturalcapital[J].Nature,1997,387:253-260.[2].:[M].:,2001:1-14.[3],,.[J].,2005(27):51-55.[4]TENLEYMC,RICHARDGL.Alternativelanduseregulationsandenvironmentalimpacts:assessingfuturelanduseinanurbanizingwatershed[J].LandscapeandUrbanPlanning,2005,71:1-15.[5]CHRISTOPHERLL,STEVENEK,JEFFREYB,etal.UsingGIS-basedecological-economicmodelingtoevaluatepoliciesaffectingagriculturalwatersheds[J].EcologicalEconomics,2005,55:467-484.[6]SAIDA,SEHLKEG,STEVENSDK,etal.Exploringaninnovativewatershedmanagementapproach:Fromfeasibilitytosustainability[J].Energy,2006,31:2373-2386.[7],.:[J].,2005,24(6):8-20.[8],,.[J].,2006,25(1):74-78.[9],,.[J].,2003(1):2-8.[10],,,.———[M].:,1986:1-29.[11],,,.AHP[J].:,2004,27(4):433-437.[12]ODYSSEUSGM.Developmentofecologicalindicators-amethodologicalframeworkusingcompromiseprogramming[J].EcologicalIndicators,2002(2):169-176.[13],,.[J].,2006,42(1):100-104.[14],,,.[J].:,2002,26(4):71-74.(:2007-01-08　:　)(上接第68页)[13]STARKK,PLAZAE,HULTMANB.Phosphorusreleasefromash,driedsludgeandsludgeresiduefromsupercriticalwateroxidationbyacidorbase[J].Chemosphere,2006,62:827-832.[14]MARRONEPA,HODESM,KENNETHAS,etal.Saltprecipitationandscalecontrolinsupercriticalwateroxidation.PartB:Commercial/full-scaleapplications[J].JournalofSupercriticalFluids,2004,29(3):289-312.[15]BERMEJOMD,FDEZ-POLANCOF,COCEROMJ.Experimentalstudyoftheoperationalparametersofatranspiringwallreactorforsupercriticalwateroxidation[J].JournalofSupercriticalFluids,2006,39:70-79.[16]STENDAHLK,JAFVERSTROMS.Phosphaterecoveryfromsewagesludgeincombinationwithsupercriticalwateroxidation[J].WaterScienceandTechnology,2003,48(1):185-190.(:2007-01-17　:　)·94·