二氧化氯氧化降解三元采出液技术研究

34520145ActaScientiaeCircumstantiaeVol．34No．5May2014No．2012BAC04B02No．5117837951278404No．20106120120012No．2010K11-02-03No．11JK0954SupportedbytheNationalKeyTechnologyＲ＆DProgramNo．2012BAC04B02theNationalNaturalScienceFoundationofChinaNo．5117837951278404theDoctoralFundofMinistryofEducationofChinaNo．20106120120012andtheScienceandTechnologyＲesearchandDevelopmentProgramofShaanxiProvinceNo．2010K11-02-03theFoundationofEducationBureauofShaanxiProvinceNo．11JK09541971—[e-mail]*BiographySUNXin1971—[e-mail]*CorrespondingauthorDOI10．13671/j．hjkxxb．2014．0182．2014．J．3451166-1172SunXXuYWangXetal．2014．Effectsofwaterdepthonalgaecontrolinstratifiedreservoirsbyin-situwater-liftingaerationtechnologyJ．ActaScientiaeCircumstantiae3451166-1172*7100552013-07-312013-12-092013-12-10．Fluent．．50m110m12．5%30．6%60m175m16d30d．65m48h．．1．2～1．6．0253-2468201405-1166-07X524AEffectsofwaterdepthonalgaecontrolinstratifiedreservoirsbyin-situwater-liftingaerationtechnologySUNXin*XUYanWANGXueLIUWeiHUANGTinglinSchoolofEnvironmentalandMunicipalEngineeringXi'anUniversityofArchitectureandTechnologyXi'an710055Ｒeceived31July2013receivedinrevisedform9December2013accepted10December2013AbstractWater-liftingaerationisaneffectivetechnologyforin-situalgaecontrolinsourcewaterreservoirs．Basedonthetypicaldesignconditionsofwater-liftingaerationprojectforwaterqualityimprovementinJinpenＲeservoirXi'anflowoutsidethewater-liftingaeratorundervariouswaterdepthswasmodeledusingcommercialsoftwareofFluenttonumericallyanalyzetheeffectsofwaterdepthonthealgaecontrolzoneandcontroleffectiveness．Whentheflowoutsidethewater-liftingaeratorreachedquasi-steadystatetheclockwiseflowneartheinletandcounter-clockwiseflowinotherdomainscoexisted．Zoneandstrengthofinletcirculationwerenotsensitivetothewaterdepthandflowvelocitydecreasedasthedistancefromthewater-liftingaeratorincreased．Whenthewaterdepthincreasedfrom50mto110mtheratioofthealgalgrowthcontrolzonetothewholeflowdomainincreasedfrom12．5%to30．6%theradiusofthecorealgalgrowthcontrolzoneincreasedfrom60mto175mandtimerequiredforcompletemixingofalgaeincreasedfrom16daysto30days．Algaesuspendedatthenon-coreinhibitionzonewastransportedpassivelytothecoreinhibitionregionwhereitfinallysettledandstayednearthebottomofthewater-liftingaerator．Underwaterdepthhigherthan65mtheresidencetimeofalgaeunderthecompensationpointwaslongerthan48hoursandincreasedwiththewaterdepth．Theproperdesignintervalsofwater-liftingaeratorsinstratifiedreservoirscanbeproposedas1．2～1．6timesthewaterdepth．Keywordssourcewaterreservoirwaterdepthwater-liftingaerationalgaecontrolnumericalsimulation1Introduction、200852009Hudnelletal．20102011．3、、、、、2013．Congetal．2009Congetal．2011a2011b2012．、、．0．000275m·s－10．000275m·s－12009Congetal．2011b．CFDFLUENTCFDLietal．20062013．FLUENT．2Numericalsimulationmethods2．1．0．375m1a300m50～110m．0．5m6m．．GAMBIT45595、450721b80m、、LHm．1abFig．1Simplifieddiagramofthephysicalmodelofreservoiraandmeshofupperinletandloweroutletareasoutsidethesimulationdomainb2．22007Congetal．2011a．2Congetal．2011aUDF．UDF761134．．．．2Fig．2Velocitiesattheupperinletofthesimulationdomainduringaperiodof270seconds50～110m30m30m0．73℃·m－1．、UDF．50、65、80、95、110m．．0．5mm0．000275m·s－12009Congetal．2011b．Stokes2000UDF．2．3FLUENTＲNGκ-εHodges1999UDF．FirstOrderUpwindSchemePISOPressureImplicitSplittingofOperatorPressureBasedImplicit．ＲNGκ-ε2004ρkt+ρkuixi=xjαkμeffkxj+Gk+ρε1ρεt+ρεuixi=xjαεμeffεxj+C*1εkGk－C2ερε2k2μeff=μ+μt3μt=ρCμk2ε4C*1ε=C1ε－η1－η/η01+βη35η=2Eij·Eij1/2kε6Eij=12uixj+ujxi()7Gk=μtuixj+ujxi()uixj8ρkg·m－3kJtsuixim·s－1μeff、μt、μ、、Pa·sGkkPa·s－1εm2·s－3Eijs－1Cμ=0．0845αk=αε=1．39C1ε=1．42C2ε=1．68η0=4．377β=0．012．0.000275m·s－1Photoshop．3mFLUENT．80m15s29．56%270s18．84%．3m2009Congetal．2011bFLUENT．Uxy0．00027586115m·s－10.000275U0xyUxy．P0xy1mP0xyU0xyU0xy1mP1xyP1xyU1xy1mPixy．3Ｒesultsandanalysis3．180m2．0m376m370%．201071．1km250～300m80．75m32012．3Fig．3Layoutofwater-liftingaerators4#4#6#．、a8HYDＲOLAB0．5m、30m5m1～250m．ADPLAUＲELWH600kHz50m．50～200m．4a80m7．ADP4b．4a4b50～200m．4H=80mFig．4ComparisonofcorezoneofalgaeinhibitionH=80m5Fig．5Comparisonofsimulatedandmeasuredalgaeconcentration5、、．14d0．0050．00124d0．000600．0006．30m、80m961134Congetal．2011b．24d10%．3．2FLUENT6．．．．6a．H=50mb．H=80mc．H=110mFig．6Flowoutsidethewater-liftingaeratorunderdifferentwaterdepthsa．H=50mb．H=80mc．H=110m650m110m．30m．．．3．37．、、．7a．H=50mb．H=65mc．H=80md．H=95me．H=110mFig．7Corezoneofalgaeinhibitionunderdifferentwaterdepthsa．H=50mb．H=65mc．H=80md．H=95me．H=110m730m0．73℃·m－1．．50m110m12．5%30．6%．．0711550m110m60m175m．．．．3．4880m、3250m3、20、40m．、、．3m．3m3m60h48h2012．20m、40m3m．880mFig．8Pathlinesofalgaetransportedpassivelyunderwaterdepthof80m8、、4．50、65、80、95、110m40、60、125、131、132h．．830m0．73℃·m－1、50～110m60～175m．5300m．、、．2．9．9Fig．9Timerequiredforcompletemixingofalgaeunderdifferentwaterdepths4Conclusions130m．250～110m．50m110m60m175m1．21．612．5%30．6%．350m110m40h132h17113416d30d．1971—．Ｒeferences．2007．、J．117-13．2009．J．3511140-145CongHBHuangTLChaiBBetal．2009．Anewmixing-oxygenatingtechnologyforwaterqualityimprovementofurban