电吸附设备工作过程的研究陈兆林

3　7环境工程学报Vol.3,No.720097ChineseJournalofEnvironmentalEngineeringJul.2009陈兆林1　孙晓慰2　朱广东2　郭洪飞2　宋存义1(1.,100083;2.,100176)　　、,。,1.4V,1.5m3/h。170～500mg/L,HCO-364%～83%。,,HCO-3。　　　　　　X703.3　　　A　　　1673-9108(2009)07-1307-04StudyonperformanceofelectrosorptionequipmentChenZhaolin1　SunXiaowei2　ZhuGuangdong2　GuoHongfei2　SongCunyi1(1.SchoolofCivilEnvironmentalEngineering,UniversityofScienceandTechnologyBeijing,Beijing100083,China;2.ESTPurificationEquipmentCo.Ltd.,Beijing100176,China)Abstract　Theinfluencesofvoltage,flowrateandbicarbonatealkalinityonelectrosorptionequipmentwerestudied.Also,theeffectofacidification-strippingaspretreatmentforhighalkalinitywaterwasinvestigated.Theresultsshowthattheoptimumvoltageofelectro-sorbequipmentis1.4V,optimumflowrateis1.5m3/h.Forspecificelectrosorptionequipmentatalkalinityinarangeof170～500mg/L,thedesorptionrateofHCO-3is64%～83%.Thestudyindicatesthatusingacidification-strippingaspretreatmentmayavoidtheaccumulationofHCO-3insidetheelectrode.Keywords　electrosorptiontechnology;voltage;flowrate;bicarbonate;acidification-stripping:2008-09-23;:2008-12-11:(1981～),,,。E-mail:[e-mail]　　,,。。,[1]、[2]、[3][4],,:、、[5,6]。,、,,。、。(electrosorptiontechnology),,/。1,,。、,,。,,,,/[7]。1　Fig.1　Schematicillustrationofelectrosorption。,。3;、,,,。,、,HCO-3,1.21×10-5cm2/s4.61×10-8m2/(s·V)[8],。1　1.1　、,1001800mm×300mm×2.5mm。2。(),;(),。2　Fig.2　Experimentalflowchart1.2　、3。3,60min,24min,36min。1.3　、,NaCl,1650μS/cm。(CaCO3)170mg/L,NaHCO3170、300、400500mg/L,。1.4　,pHpH,。Cl-(GB/T15453-1995),(GB8538-1987)(pH)。2　2.1　1.2m3/h,1.0、1.2、1.41.5V,3。3,,。,,[9]:q=(8RTεε0)1/2C1/2sinhzEF2RT:q;ε;ε0;C;z;E;F;R;T。3　Fig.3　Effectofvoltageondesalinationefficiency,,。,,,。,,,。,4。4,1.4V1.5V,1.4V,13087:4　Fig.4　Energyconsumptionandsaltremovalrateatdifferentvoltages1.4V。pH7.9,pH5。1.23V[8],1.0V1.2V,,,pH。1.0V1.2V,pH,pH。5　pHFig.5　pHvaluesofeffluentatdifferentvoltages2.2　1.5V,0.8、1.0、1.21.5m3/h,6。,。7。,1.5m3/h0.8m3/h2,6%。,1.5m3/h。2.3　,,。1.5V,1.5m3/h,170、300、400500mg/L,Cl-HCO-31。1,Cl-,97%～99%,HCO-3,64%～83%,HCO-3,HCO-3,,。1　Cl-HCO-3Table1　DesorptionrateofCl-andHCO-3atdifferentalkalinities(mg/L)Cl-(%)HCO-3(%)17099833009767400986550098642.4　500mg/L,pH4,HCO-3H2CO3,,1309330mg/L,pH7.5。,8。8,,2.3HCO-3。,8,9。,,,。3　　、,。,1.4V,1.5m3/h。170～500mg/L,HCO-364%～83%。,HCO-3,。[1]SoldatovV.S.,SokolovaV.I.,MedyakG.V.,etal.BinaryionexchangeequilibriainsystemscontainingNO-3,Cl-andSO2-4onfibrousanionexchangerswithtetraalkyl-ammomiumgroups.ReactiveFunctionalPolymers,2007,67:1530～1539[2]MohammadA.S.,HishamE.Developmentsinthermaldesalinationprocesses:Design,energy,andcostingas-pects.Desalination,2007,214:227～240[3]LauraJ.B.,ThomasW.J.,AndreaI.Desalinationusingelectrodialysisasafunctionofvoltageandsaltconcentra-tion.Desalination,2007,205:38～46[4]GoztilivezJ.M.,LoraJ.,MendozaJ.A.,etal.Model-ingofalow-pressurereverseosmosissystemwithconcen-traterecirculationtoobtainhighrecoverylevels.Desalina-tion,2002,144:341～345[5]HelalA.M.,El-NasharA.M.,Al-KatheeriE.,etal.OptimaldesignofhybridRO/MSFdesalinationplants,PartI:Modelingandalgorithms.Desalination,2003,154:43～66[6]KhaledW.,RajaB.A.,LoubnaF.,etal.Brackishgroundwatertreatmentbynanofiltration,reverseosmosisandelectrodialysisinTunisia:Performanceandcostcom-parison.Desalination,2007,207:95～106[7]..,2002,22(8):1～3[8],..:,2003.270～273[9]BardA.J.,FaulknerL.R.ElectrochemicalMethods:FundamentalsandApplications.NewYork:JohnWileySons,2000.5831310