气浮除藻工艺的比较及影响因素

1、WATERPURIFICATIONTECHNOLOGYVol.31,No.6,2012December25th,2012201231625-2876WaterPurificationTechnology20。《》2010[1]26121153.8%。[2-3]、。98%～99%。[4]。、、、。。、[5]、、[6-7]。、、。、[8]。[]2012-02-23[]2009ZX07101-011[]1986-。E-mail:hmyuanjun@126.com。[]E-mail:gc-zhu@seu.edu.cn。1.2100962.214135、、。。PAC、ASFC90%。pH28%~30%。X703A1009-0177201206-0025-04ComparisonandInfluenceFactorsofAlgaeRemovalwithAir-FlotationProcessesYuanJun1,2,ZhuGuangcan1,2,LüXiwu1,2(1.SchoolofEnergyandEnvironment,SoutheastUniversity,Nanjing210096,C。

2、hina;2.WuxiEngineeringResearchCenterofTaihuLakeWaterEnvironment,SoutheastUniversity,Wuxi214135,China)AbstractThedevelopmentofairflotationprocesswasreviewedinthispaper.Coagulationoptimization,surfactantselection,theimpactsofbubblecharacteristicsandairflotationparameteroptimizationwerediscussedasthereferenceforthepracticalapplication.Itwasarguedthatair-flotationinpressurevesselcouldefficientlyremovealgae,andproducedthealgaeslurrysuitableforthesubse－quenttreatmentprocesses.Thealgaesurfacecharacteri。

3、sticsshouldbetakenintoconsiderationforcoagulantandsurfactantselection.TheapplicationofPAC,ASandFChelpedairflotationprocessesreachmorethan90%pollutantsremovalrate.Thebubblesizeandstabilitywerecorrelatedwithairdissolvingmethodsandinorganicsaltconcentrations.pHshouldbeadjustedaccordingtotheselect－edcoagulantspecies.Refluxratioshouldbecontrolledto28%~30%foralgae-ladenwatertreatment.Keywordsair-flotationcoagulationalgaeremovalcomparisoninfluencefactor25--DOI:10.15890/j.cnki.jsjs.2012.06.006Vol.31,No.。

4、6,2012[9-10]。[11]。、。。。dissolvedairflotation,DAF[12-15]。。DAF。PACDAF1880%[16]。DAF、、pH。8、9DAF。0.13%2×1010／L28%PACAl2O328%5%PAC1。PAC231mg／L、、COD98.8%、98.1%、95.8%99.2%。3%。dispersedairflotation,DiAF,[17]。[18]SDSDiAF。DiAFDAF。cavitationairflotation,CAF。[19]。CAF、、、、、[20]。[21]CAF0.056%99%。CAFCAF、、。DAF。DAFDAF。。。Hyde[22-24]。[25]COD、SS4.6%、6.4%-COD、SS85.7%、98.4%。。。PAC、AS、FC。PACAl2O328%AS、、COD／%99.598.597.596.595.594.593.592.50PAC／mg·L-11DAFFig.1CharacteristicsofAlgae-LadenWaterTreatmentbyDAF／%65.554.543.532.。

5、52COD100200300.26--WATERPURIFICATIONTECHNOLOGYVol.31,No.6,2012December25th,2012≥99%FC≥99%。5%。10L1min10min30%1min10min2。2AS。FC、PACPACCODFCFC。。[26]、TOC、。[27]ASFCPACPASPAMPAM。。10~1000μm[28-31]。Han[32]。。μm100μm。G70~80s-1、70s-1、PAC30s-1。[33]。。/。。Chen[34]CTAB、SDS、TritonX-100ScenedesmusquadricaudaSDSTritonX-100CTABCTABCTAB。CTAB。Phoochinda[29]。。、PAC／mg·L-1COD、COD／%1009896949290888684828090／%3.532.521.510.5110130150170190210AS／mg·L-1COD、COD／%10099.599.598.59897.59796.59695.595／%3.532.521.510.539044049054。

6、05902PAC、ASFCFig.2AlgaeRemovalEffectofAlgae-LadenWaterbyPAC,ASandFCFC／mg·L-1COD、COD／%10095908580757065604090／%3.532.521.510.514019027--Vol.31,No.6,2012。。[35]。。Kiuru[36]。10m3／m2·h10~100μm40μm。。。Chen[34]NaNO3。pH。pH5~7[27]pH6[37]。pHSDSChitosanpH5~8pHCTAB。pHpH[34]。Margarid[38]M.aeruginosaCO2CO2pH。pH。[6,14,28,30,33]6%~10%。0.1%~0.2%28%~30%0.4%56%~60%。。。。。—。pH28%~30%。12010[R].:,2011.2,,,.[J].,2012,31(4):55-60.3,,.、[J].,2008,27(3):70-72.4.-RR[J].,2012,31(4):27-30,43.5J.Rubio,M.L.Souza,R.W.Smith.Overview。

7、offiotationasawastewatertreatmenttechnique[J].MineralsEngineering,2002,15:139-155.6MargaridaRibauTeixeira,MariaJoaoRosa.Comparingdis－solvedairflotationandconventionalsedimentationtoremovecyanobacterialcellsofMicrocystisaeruginosaPartI:Thekeyop－eratingconditions[J].SeparationandPurificationTechnology,2006,52:84-94.7.[J].,1996,15(1):5-7.8,,.[J].,2005,8(4):49-51.9DupreV,PonasseM,AurelleY.BubbleFormationbyWaterRe－leaseinNozzles[J].WaterResearch,1998,32(8):2491-2497.10FritzG,Paulsen.TheDynamicsofBubb。

8、le／ParticleAttachment.7628--Vol.31,No.6,2012andtheApplicationofTwoDisjoiningFilmRuptureModelstoFlotation[J].ColloidandInterfacescience,1996,178:400-401.11J.K.Edzwald.CoagulationinDrinkingWaterTreatment:Parti－cles,OrganicsandCoagulants[J].TAWQ／TWSAJointSpecializedConference,1992,1-15.12,.[J].,2007,21(3):59-61.13,.[J].,1999,7(6):94-103.14T.Schofield.Dissolvedairflotationindrinkingwaterproduction[J].WaterSci.Technol.,2001,43(8):9-18.15,.[J].,1985,4(1):4-8.16W.vanCraenenbroeck,J.VandenBogaert,J.Ceul。

9、emans.Theuseofdissolvedairflotationfortheremovalofalgae-TheAntwerpexperience[J].WaterSupply,1993,11(3／4):123-133.17.[J].,2006,6(3):31-32.18R.W.Smith,Z.Yang,R.A.WhartonJr.,FlotationofChlorellavulgariswithanioniccationicandamphotericcollectors[J].Miner.Metall.Process,1991,8(2):22-26.19,.CAF[J].,2006,31(1):37-39.20.CAF[J].,1997,13(3):45.21,,,.CAF[J].,2005,6(2):88-91.22HydeRA,MillerDG.Waterclarificationbyflotation[J].JWWA,1997,69(7):369-377.23,,.[J].,2007,26(2):17-20.24,,,.[J].,2008,27(5):33-36.25,,。

10、,.[J].,2008,2(12):1639-1643.26,,,.-[J].,2008,34(5):154-156.27,,.[J].,2002,21(3):160-162.28S.Kempeneers,F.VanManxel,L.Gille.Adecadeoflargescaleexperienceindissolvedairflotation[J].WaterSci.Technol.,2001,43(8):27-34.29W.Phoochinda,D.A.White,B.J.Briscoe.Analgalremovalus－ingacombinationofflocculationandflotationprocesses[J].Envi－ronmentalTechnology,2005,25,1385-1395.30JamesK.Edzwald.Principlesandapplicationsofdissolvedairflotation[J].WaterScienceandTechnology,1995,31(3/4):1-24.31K.Fukusi.Anexper。