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当前位置:首页 > 建筑/环境 > 工程监理 > 纯水体系超声空化产额研究丁雷
StudyonultrasoniccavitationyieldinpurewatersystemDingLei1,WangJiaping1,ZhaoYixian1,ZhouHongsheng2,NiuXiaojun3(1.SchoolofResourceandEnvironmentalEngineering,EastChinaUniversityofScienceandTechnology,Shanghai200237,China;2.ShanghaiAcousticsLaboratory,InstituteofAcoustics,ChineseAcademyofSciences,Shanghai200032,China;3.HaihuaYongtaiLawFirm,Shanghai200120,China)1,1,1,2,3(1.,200237;2.,200032;3.,200120)[]H2O2,、。,400kHz120W,H2O2、,。,。[];;H2O2;[]TQ085[]B[]1005-829X(2010)03-0034-04Abstract:Theeffectsofultrasonicfrequencies,ultrasonicpowerandaerationoxygensupplyontheultrasoniccavi-tationyieldinpurewatersystemhavebeeninvestigatedwhenH2O2productionandconductivityvariationareadopt-edtorepresentultrasoniccavitationyieldintheexperiment.Theresultsshowthatinthescopeof400kHzand120W,bothH2O2productionandconductivityvariationareincreasedwiththeincreaseofultrasonicfrequencyandultrasonicpower,andtheenhancedeffectofhighultrasonicfrequencyontheultrasoniccavitationyieldismoreob-vious.Aerationoxygensupplycouldenhanceultrasoniccavitationyieldobviously.Theincreaseofconductivityvari-ationofultrasoundsystemcombinedwithaerationismuchlargerthanthealgebraicsumofconductivityvariationofbothindividualaerationandindividualultrasoundsystem.Keywords:ultrasound;cavitationyield;hydrogenperoxide;ultrasonicoxidation[](B604),(5000K)、(50MPa)400km/h,,〔1-2〕。,。,,〔3-4〕。。,、,、。,。H2O2,(1)~(3)〔5〕。,,,,,(4)~(6)〔6〕,,30320103IndustrialWaterTreatmentVol.30No.3Mar.,201034——2010-03,30(3),〔7-8〕。H2O2。H2O2,400kHz120W、。H2O·OH+·H(1)·H+O2→·OOH(2)·OH+·OH→H2O2(3)N2+O22NO(4)2NO+O22NO2(5)2NO2+H2O→HNO2+HNO3(6)11.11。,50、100、200、400kHz。1.2,。H2O2〔9〕,DZS-706,。1.3。500mL,。,,。,120W。22.1H2O22.1.1H2O250、100、200、400kHz,H2O2,2。2,H2O2。60min,50kHzH2O20.45mg/L,400kHzH2O211.71mg/L。,,H2O2,,,H2O2。2.1.2H2O2400kHz,60、90、120W,H2O2,3。3,400kHz,,H2O2。60min,60WH2O25.17mg/L,120W,H2O211.71mg/L。,,H2O2。2.1.3H2O2100kHz,H2O2,()7L/min,4。4,H2O2。60min,H2O20.72mg/L,H2O21.45mg/L,H2O21。,112108642010203040506070/minH2O2/(mg·L-1)400kHz200kHz100kHz50kHz2H2O214121086420102030405060/minH2O2/(mg·L-1)120W90W60W3H2O2,:35——2010-03,30(3),。,O2·H、·OH·OOH,,H2O2。,4,,H2O2,,,。2.2S0,tSt,ΔS=St-S0。2.2.150、100、200、400kHz,,5。5,。,,,。2,400kHz,,60min,400kHz。,,。2.2.2400kHz,60、90、120W,,6。6,H2O2,400kHz,,,,。2.2.3100kHz,,()7L/min,7。7,。60min,7.5、16.63μS/cm,1,,。,CO2,60min,3.57μS/cm,。4H2O2,,,。4H2O2210180150120906030010203040506070/minΔS/(μS·cm-1)50kHz100kHz200kHz400kHz522020018016014012010080604020010203040506070/minΔS/(μS·cm-1)120W90W60W61.61.41.21.00.80.60.40.20102030405060/minH2O2/(mg·L-1)100kHz100kHz+181614121086420102030405060ΔS/(μS·cm-1)/min7100kHz100kHz+100kHz36———————————————————————————————————————————————[](1978—),2005,。:13816389718,E-mail:leiding@ecust.edu.cn。[]2009-10-25()ResearchonadvancedtreatmentofprintinganddyeingwastewaterXuQikun,WangXiaojun(SchoolofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510006,China),(,510006)[]、。,,COD30mg/L,4,SS1mg/L。96.0%,。。[];;;;[]X703.1[]B[]1005-829X(2010)03-0037-04Abstract:Biologicalaeratedfilter(BAF)andozone,nanofiltration(NF)processeshavebeenusedfortreatingthesecondaryeffluentfromaprintinganddyeingfactory.TheresultsshowthatthepretreatmentsystemofBAFandozonehavesteadilygoodeffectonthecontaminantsremoval.Itseffluent’sCODislessthan30mg/L,chromais4timeslower,SSlowerthan1mg/L.Duringtheexperiment,theaveragedesalinationrateofnanofiltrationis96.0%.Andthedesalinationratedoesnothavedistinctvariationafterchemicalcleaning.Theeffluentqualityofthepro-cessesmeetsthedesignedreuserequirementsofprintinganddyeingfactories.Keywords:printinganddyeingwastewater;biologicalaeratedfilter;ozone;nanofiltration;advancedtreatment30320103IndustrialWaterTreatmentVol.30No.3Mar.,20103(1)H2O2。(2)H2O2。(3)400kHz120W,、,H2O2,,。(4)H2O2,,。[][1].[M].:,2007:52-65.[2]HoffmannMR,HuaI,HochemerR.Applicationofultrasonicir-radiationforthedegradationofchemicalcontaminantsinwater[J].UltrasonicsSonochemistry,1996,3(3):163-172.[3]InceNH,TezcanliG,BelenRK,etal.Ultrasoundasacatalyzerofaqueousreactionsystems:thestateoftheartandenvironmentalappli-cations[J].AppliedCatalysisB:Environmental,2001,29(3):167-176.[4]VassilakisC,PantidouA,PsillakisE,etal.Sonolysisofnaturalphenoliccompoundsinaqueoussolutions:degradationpathwaysandbiodegradability[J].WaterResearch,2004,38(13):3110-3118.[5],.[J].,2000,26(5):19-21.[6],,,.———[J].,1994,13(2):56-61.[7]FengRuo,ZhaoYiyun,ZhuChangping,etal.Enhancementofultrasoundcavitationyieldbymulti-frequencysonication[J].UltrasonicsSonochemistry,2002,9(5):231-236.[8],,,.[J].:,2005,41(1):66-70.[9],,,.Fenton[J].,2006,22(4):88-91.37——
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