浮沉池工艺在北方地区水库水处理中的应用梁恒

WATERPURIFICATIONTECHNOLOGYVol.29,No.5,2010October25th,2010。0~4℃5~10mg／L[1]、mg／L[1]。。、108／Lα10μg／L1μg／L[2]。、、、。《》GB5749—2006。11.1、250101、。、、、、、、。0.3~0.35MPa7%~9%10~20min9~11.5m3／m2·h。TU991A1009-0177201005-0057-05ApplicationofTreatmentProcessesofFlotation-SedimentationBasinforReservoirRawWaterinNorthChinaRegionLiangHeng,ZhangKefeng,WangYonglei,ZhangShen(SchoolofMunicipalandEnvironmentalEngineering,ShanDongJianZhuUniversity,Ji’nan250101,China)AbstractWiththeseasons’orclimates’change,temperature,turbidityandalgalcontentofwaterinthereservoirinnorthChinare－gionalternatedhighlyorlow,seriouslyhavingtheeffectsontheconventionalwatertreatmentprocesses.Theflotationsedimentationbasinprocesswhichcombinedthetechnologyadvantagesoftheflotationandsedimentationfeaturescanrespondtochangesinwaterqualitybetter.Anditsprocessingadvantagesareasfollows:ahighhydraulicloading;acompactpoolbody;highefficiencyandreten－tionofsuspendedsolids;ahighenergyofremovalcapabilityinhighhydraulicload;effluentwithstablewaterquality;startquicklyandahighcapacityagainsttheimpactofdetoriatedrawwaterqualityandhydraulicload.Basedontheoperatingparametersoftheseveralsetsofflotationsedimentationbasinwhichwereputintouse,theparametersoftheflotationsedimentationbasinindealingwithwaterinthenorthernreservoirareasfollows:thedissolvedairpressureis0.3~0.35MPa;therefluxratiois7%~9%;thereac－tiontimeis10~20min;thesurfaceloadingis9~11.5m3／m2·h.Keywordsflotation-sedimentationbasinreservoirrawwaterinnorthChinaregionlowtemperaturelowturbidity[]2010-01-31[]“”2008ZX07422-003[]1985-。[e-mail]。201029557-61WaterPurificationTechnology!!!!!!!!!!57--DOI:10.15890/j.cnki.jsjs.2010.05.014Vol.29,No.5,2010。[3]N=16×n1n2pμd1+d23姨1N———、d1、d2———n1、n2———d1、d2p———μ———。、、3／2。。1.2。。3~4h[4]。2。、。Valade[5]2.1~3.0℃0.79~1.27NTU0.01~0.07NTU。Mally[6]100NTU。、。2.1。,。,。、,。。2.231。[7-9]。1Tab.1Typesandcharacteristicsoftheflotation-sedimentationbasin、,、,1、,,,。。“”2.32.3.1。.58--WATERPURIFICATIONTECHNOLOGYVol.29,No.5,2010October25th,201010~30μm。Edzwald[10]100μmEdzwaldValade5min20min、[11-12]。G70s-1。2~3。2.3.2。0℃KT=0.37720℃KT=0.243C=736KT×PP254%。CO2。10~100μm。Chung[13-14]400~600kPa40μm。。、,,。2.3.3。10m3／m2·h[15]。。2.3.4、。[16]。、、。Re。。31。50NTU0.25~0.3mm／s9.0~11.5m3／m2·h6~7m3／m2·h50%。50NTU9.0~11.5m3／m2·h5.4~9.0m3／m2·h[17-18]。2。0.3~0.35MPa7%~9%。[19]。31710111351168122943141-2-3-4-5-6-7-8-9-10-11-12-13-14-1Fig.1Diagramoftheflotation-sedimentationbasinwithinclinedplateandlateralflow59--Vol.29,No.5,201015~20min10~20min[20]。4。2~3m／min。L[21]2。44.1235km。、。[22]850m3／hL=18mB=9.2mV=9.87mm／s2m3m13m7.10m3／m2·h(、7%)31m60°2.60m80mm3m／min0.1m／sTV4m17.70m3／s·m。2LFig.2DiagramoftheL-shapedscraperandthestraight-shapedscraper2Tab.2Changeofwatergualitybeforeandaftertheapplicationoftheflotation-sedimentationbasinprocessindifferentseasons11~45~67~89~1031525127.87.77.57.64~760~7040~6015~254~5.55.5~65~5.54.5~51.0~2.52.5~3.01.5~2.50.5~1.02.3~3.62.5~2.82.4~2.72.4~3／NTUCODMn／mg·L-1pH／NTUCODMn／mg·L-12。4.21×104m3／d5000m3／d。[17]。[23]60°。。。3、4123456789101112／NTU／NTU1009080706050403020100／NTU3Fig.3Treatmenteffectoftheflotation-sedimentationbasinindifferentperiods.60--WATERPURIFICATIONTECHNOLOGYVol.29,No.5,2010October25th,2010、、。5、。。、、、、、、、、、、、。、、、、9~11.5m3／m2·h0.3~0.35MPa7%~9%10~20min。、。1,,,.[J].(),2008,38(1):245-248.2,,,.[J].,2006,22(22):96-98.3,.[M].:,1999.4,,,.[J].,2004,30(9):21-26.5ValadeMT,EdzwaldJK,TobiasonJE,etal.Particleremovalbyflotationandfiltration:pretreatmenteffects[J].AmericanWaterWorksAssociation,1996,88(11):35-47.6MalleyJP.Laboratorycomparisonofdissolvedairflotationwithconventionaltreatment[J].AmericanWaterWorksAssociation,1991,84(9):56-61.7,,.[J].,2004,24(7):9-12.8,,.[J].,1999,25(5):32-35.9,,,.[J].,2009,25(16):26-28.10EdzwaldJK.Flocculationandairrequirementfordissolvedairflotation[J].AmericanWaterWorksAssociation,1992,84(3):92-101.11ValadeMT.Pretreatmenteffectsonparticleremovalbyflotationandfiltration[J].AmericanWaterWorksAssociation,1996,88(12):35-47.12KiuruHJ.Developmentofdissolvedairflotationtechnologyfromthefirstgenerationtothenewest(third)one(DAFinturbulentflowconditions)[J].WaterScienceandTechnology,2001,43(18):1-7.13ChungY,ChoiYC,ChoiYH,etal.Ademonstrationscaling-upofthedissolvedairflotation[J].Waterresearch,2000,42(3):817-824.14LeppineDM,DalzielSB.Modelingtheglobalefficiencyofdis－solvedairflotation[J].WaterScienceandTechnology,2001,43(8):159-166.15,.[M].:,1992.16,.[M].:,1999:270-271.17,.[J].,2008.4,24(7):92-95.18,,,.／/[J].,2007.5.23(9):89-91.19,,.[J].,2003,19(6):87-88.20,,.-[J].,1997,23(8):8-12.21,.[J].,2006,32(11):1-2.22,,.[J].,2003,19(5):553-556.23,,,.[J].,2009,25(2):35-37.12345678910／9590858075706560／%4Fig.4Treatmenteffectoftheflotation-sedimentationbasinindifferentprocessunits61--