管式超滤膜海水淡化提镁预处理工艺中试研究赵旭臣

、。。。MSF、MED、RORO、、、。、、[1]。、、、pH、、。[2][3]。。。11.163m4.2m212mmPVDF100000。1.2pH7.8938.7μS·cm-110NTUCOD5.75mg·L-1Ca2+、Mg2+0.308、1.138g·L-1。1.3。RO。1。1.4EDTAH293703-11。300160。、。。。TQ028.8A1000-3770(2011)[e-mail]3711201111TECHNOLOGYOFWATERTREATMENTVol.37No.11Nov.,2011111DOI:10.16796/j.cnki.1000-3770.2011.11.02822.12。。。。。2.23。。。[4-5]。2.34。4。。。。[6]。2.4。0.1MPa20℃12hMg2+5。01234567100015002000250030003500
/Lh/h2Fig.2Productwaterchangeswithtime3Fig.3Waterproductionunderdifferentwaterpressure012345671000150020002500300035004000450050005500
/h/Lh4Fig.4Theimpactofrun-timeonthewaterturbidity012345670.200.250.300.350.400.450.50
/NTU/h1Fig.1Pre-treatmentprocess
 

NaOH5Mg2+Fig.5TherelationshipbetweentimeandMg2+inthethroughfluid0246810120.000.020.040.060.080.100.120.14

Mg/gL/h37111125Mg2+。96%。2.5。1。190%。2。2。。。3。0.15MPa。。96%90%。[1]WilfM,KlinkoK.Effectivenewpretreatmentforseawaterreverseosmosissystems[J].Desalination,1998,117(1/2/3):323-331.[2]ChuaKT,HawladerMNA,MalekA.Pretreatmentofseawater:resultsofpilottrialsinsingapore[J].Desalination,2003,159(3):225-243．[3]TengCK,HawladerMNA,MalekA.Anexperimentwithdifferentpretreatmentmethods[J].Desalination,2003,156(1/2/3):51-58．[4].[M].:,2004:234-235.[5].[M].:,2000:30-33．[6].[J].,2006,12(6):613-614．STUDYONTUBULARULTRAFILTRATIONMEMBRANEDESALINATIONPRETREATMENTTECHNOLOGYOFEXTRACTINGMAGNESIUMZhaoXuchen,LiuEnhua(TianjinPolytechnicUniversity,MotianMembraneEngineeringandTechnologyCo.Ltd.,Tianjin300160,China)Abstract:Inthepilotprocess,westudiedthetubularultrafiltrationmembranedesalinationpretreatmenttechnologyofextractingmagnesium.Therelationshipamongfluxrate,runtimeandoperatingpressurehadbeeninvestigated.Then,theeffectofrunningtimeonproducedwaterturbiditywasalsostudied.Testedtheeffectofmagnesiumextractionofexperimentalapparatus,andthentubularultrafiltrationmembraneofthecleaningmethodwasproposed.Theresultsindicatedthattubularultrafiltrationmembraneonmagnesiuminseawaterhadverygoodremovalefficiency,theproducedwatercouldmeettheinfluentwaterdemandsofthereverseosmosis.Cleaningmethodwassimple,therecoveryratewasrelativelyhigh.Keywords:seawaterdesalination;pretreatment;tubularmembrane;ultra-filtration;Mgextraction/MPa/℃/%0.13400140032002094.12/L·h-11Tab.1Cleaningeffect2Tab.2Therelationshipbetweencirculationflowandmembranefouling/m3·h-1/L·h-1/%7h16182034003600400014001800240058.85040!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!113