超声波强化活性污泥活性的试验研究

Vol.32No.1200637112(1,518055;2,100084),OUR,25kHz,012W/mL,60s,30.49%;3s,20%3s,113sResearchonimprovementofsludgeactivitybyultrasoundprocessYangJinOmei1,ZhangGuangOming1,WangWei2(1.ShenzhenGraduateSchool,TsinghuaUniversity,Shenzhen518055,China;2.DepartmentofEnvironmentalScienceandEngineering,TsinghuaUniversity,Beijing100084,China)Abstract:Thepretreatmentofactivatedsludgebyultrasoundwasstudiedtoimprovesludgeactivityasdenotationusingoxygenuptakerate(OUR).Andthiswasvalidatedbyartificialsewagetreatment.Anincreaseinthebiologicalactivitycanbeobtainedbytheintakeofultrasound.Sonicationatafrequencyof25kHzandapowerdensityof012W/mLincreasedthesludgeactivityby30.49%after60sand20%after3s.3swasrecommendedasoptimalultrasoundtimeforenergyconservation.Highersludgeactivitywasachievedwithinterimultrasoundthanwithcontinualtreatment;andthebestvalueofdutyOcyclewas11.TheeffluentqualitywasbetterusingactivatedsludgeafterultrasonictreatmentthanthatusingunOtreatedactivatedsludge.Keywords:Ultrasound;Sludgeactivity;DutyOcycle;Artificialsewage0,,,,,,,,,,,,[1],,,[2],[3,4];[5,6];,,22d8d,2.2,[7,8]45min6h,[1],,,,OUR,WATER&WASTEWATERENGINEERING©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1):012W/mL,60s,31,11,13,;:11,60s,0.08W/mL0.1W/mL0.2W/mL0.4W/mL;:11,0.2W/mL,0s3s10s30s60s120s;:11,0.2W/mL,60s,0.2W/mL0.4W/mL(2),1.4OUR(Oxygenuptakerate),,OUR,,OUR[9]1,50mLBOD,1000mg/L,7mg/L,DOt,OUR22.112.1.122,11,30.49%,,60s[10]22.1.2333,,,,(0.4W/mL),,0.2W/mL,0.3W/mL[10],,;,[10]WATER&WASTEWATERENGINEERING©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(Lh)211736523199520192722175352.22.2.12,BODNP2NH4CKH2PO4MgSO4CaCl2FeSO47H2ONaHCO3/mg/L40012015035105015100100512.2.225kHz,3s,11,6s,012W/mL2.2.3600mL3L,1500mL,3h,015hCODCr2.2.453hCODCr5,3s,CODCr,3h,3h,51.5h,CODCr100.864mg/L,(GB189182002);3s,CODCr92.984mg/L,3h,CODCr69.344mg/L,B,3s,CODCr37.824mg/L,A5,CODCr92.984mg/L,2h,3s1.5h,0.5h,WATER&WASTEWATERENGINEERING©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[11],,,[10],,,3(1),11,(2),0.2W/mL,30.49%,;,,(3)60s,60s,60s3s20%,60s1/20(4),,(5),3sCODCrCODCr3h,3sCODCr69.344mg/L37.824mg/L,GB189182002BA;,CODCr69.344mg/L,3s1/3,,,,,[12]1,..:,2005.2712,,..,2003,4(8):70723,,,.COD.,2003,55:1401424,,,.4.,2001,16(2):145BienJB,KempaES,BienJD.Influenceofultrasonicfieldonstructureandparametersofsewagesludgefordewateringprocess.WaterSciTechnol,1997,36(4):2872916deSarabiaER2F,Gallego2JuarezJA,GRodr2guez2Corral,etal.Applicationofhigh2powerultrasoundtoenhanceliquid/solidparticleseparationprocesses.Ultrasonics,2000,38:6426467Lafitte2TrouqueS,ForsterCF.Theuseofultrasoundandirradiationaspre2treatmentsfortheanaerobicdigestionofwasteactivatedsludgeatmesophilicandthermophilictemperatures.BioresTechnol,2002,84:1131188TihmA,NicklK,ZellhornM,etal.Ultrasonicwasteactivatedsludgedisintegrationforimprovinganaerobicstabilization.WaterRes,2001,35(8):200320099,..,2002,28(3):4810SchlaferO,SieversM,KlotzbucherH,etal.Improvementofbiologicalactivitybylowenergyultrasoundassistedbioreactors.Ultrasonics,2000,38:71171611,,,..,2002,3(6):434612YinX,HanPF,LuXP.Areviewonthedewaterabilityofbio2sludgeandultrasoundpretreatment.Ultrasonics,2004,42:337348:13760368529:[phone]E2mail:[e-mail]:20050701WATER&WASTEWATERENGINEERING©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.