反渗透膜对市政污水的深度处理回用研究

1,2,1,1,1(1.,116024;2.,116023):,,.,97.5%,95.7%,94.4%,TOC.20,,,,.:;;:X703:B:1007-8924(2010)02-0064-05,2@300MW,6500m3/h,1000~1500m3/h,200~400m3/h[1].,.200185%,200650%[2],.[3],[4,5].,,[6].-,,,.pH,NH3-N,TN,TOC,,.11.1,1.1Fig.1Schematicdiagramforwastewatertreatmentprocess1.2:,.()().1.:GE.365ft2(3319m2),2nm,;11.05m3/h(25e,1.55MPa,2000mg/LNaCl),3.99m3/h;17B8,75%.:2008-11-19;:2008-12-10:(1981-),,,[e-mail]4302Vol.30No.220104MEMBRANESCIENCEANDTECHNOLOGYApr.20101Table1Parametersandcapabilitiesofthepretreatmentfacilities7@14m;10B1;3h,COD14.1m@14.1m@5.5m;3h;0.3~0.5mm/s2@4.82m;0.34MPa;26~36m/h,4.5m@4.5m@3.8m;0.5~1.2mm;5m/h,1.3,.,COD50%~65%40%~70%,SDI3.5~4.5,.2.2Table2DesigninfluentqualityandwaterstandardspH/(LS#cm-1)NH4-N/(mg#L-1)TN/(mg#L-1)TOC/(mg#L-1)CODcr/(mg#L-1)SDI6.5~9.0250030381050~906.5~8.520004.0~7.0374~6153.5~4.56.5~9.02401.0106022.12007,,.4,100,,200836,,,.2.224h,,,;,..3pHTOC4,,.3.1pHpH,2.2,pH7.0,,,pH2pHFig.2Changeofinfluentandeffluentwater5.5~6.0,,pH,pH,.,pH,pH,.,pH.pH:pH6.0~7.5,pHpH,,pH,[7].3.2,.2:#65#.3.3Fig.3ChangeofConductivitytreatedbyROmembrane,700~1000LS/cm,15~25LS/cm,2000~2500LS/cm,97%.3.34:,4(TN).(NH3)(NH4+),.,,.,,.,,20~30mg/L,,10mg/L.,0.4mg/L,,,4.35~40mg/L,,2.5mg/L,90%,,,5.3.4TOC(TOC),,.(COD),TOC,.,TOCCOD.4Fig.4RemovalefficiencyofROforNH3-N5Fig.5RemovalefficiencyofROfortotalnitrogen,TOC-VCPHTOC,TOC(6),TOC,TOC.6TOCFig.6RemovalefficiencyofROforTOC44.1,,#66#30.20071,,,72007120087,.7Fig.7Changesofquantityandrecoverypercent60~70m3/h,50%,(100m3/h)(75%),(12~15e),(0.7MPa);20~25e,0.85MPa,90m3/h,.,63.8%,,,20081,.4.2,,,(0.9~1.05MPa),.8.8Fig.8Changesofinfluenttemperatureandrecoverypercent,(25e)1e,3%.,,,.8,,1e,1%~2%,20~25e.,.53.3Table3Expensesofrecycledwatertreatment(/t)0.570.060.150.290.370.030.160.412.04:8000h.,0.18/t,0148/t,2.70/t.400m3/h,8000h,320t,.61),,,-.2),97.5%,95.7%94.4%,TOC100%.2:#67#3),20,.4),2.70/t,,320t,,450.[1],,,.[J].,2007,33(11):184-187.[2],.[J].,2006,26(10):80-82.[3],,,.A/O[J].,2004,20(10):91-92.[4]DhouibA,HdijiN,HassairiI,etal.Largescaleapplica-tionofmembranebioreactortechnologyforthetreatmentandreuseofananionicsurfactantwastewater[J].ProcBiochem,2005,40:2715-2720.[5]PetalaM,TsiridisV,SamarasP,etal.Wastewaterrecla-mationbyadvancedtreatmentofsecondaryeffluents[J].Desalination,2006,195:109-118.[6]KnopsF.Economicevaluationofanewultrafiltrationmembraneforpretreatmentofseawaterreverseosmosis[J].Desalination,2007,203:300-306.[7],,.pH[J].,2006,26(3):62-64.AppliedresearchofreverseosmosismembraneonadvancedpurifyingofdomesticwastewaterWUJiazhen1,2,LIFulin1,ZHANGXingwen1,LIChangdong1(1.DalianUniversityofTechnology,SchoolofEnvironmental&BiologicalScience,Dalian116024,China;2.DalianChunxingEnvironmentalTechnologyCo.,Ltd.,Dalian116023,China)Abstract:Reverseosmosis,asanadvancedtreatmentprocess,hasbeenappliedtotreatthesecondaryeffluentfromwastewatertreatmentplantinathermalpowerplantinDalian.Thequalityofdisposalwaterisaboverecir-culatedcoolingwaterstandards.Theresultsindicatethattheeliminationratesofconductivity,ammoniacaln-itrogenandtotalnitrogenare97.5%,95.7%and94.4%respectively,andthecontentofTOCisnearlyzero.Thissystemhasprovidedrecirculatedcoolingwaterforthepowerplantforabout20months,whichrevealsob-viousfeasibilityandpromotedvalue.Keywords:sewagereused;reverseosmosis;recirculatedcoolingwater56/0,,,:1.;2.;3.;4.;5.;6.;7..56#68#30