MVR法处理含盐废水中试研究

107Vol．10No．720167ChineseJournalofEnvironmentalEngineeringJul．2016MVＲ112*11．4000742．400060MVＲ。MVＲMVＲ、、、。85．10%99．66%6．20《》GB/T19923-2005CaSO4MVＲ46．34kWh。X703．1A1673-9108201607-3671-06DOI10．12030/j．cjee．201501182PilotstudyonmechanicalvaporrecompressiontechnologyfortreatmentofsalinewastewaterQUＲui1ZHANGZhanmei12*FUTing11．KeyLaboratoryofMinistryofEducationforHydraulicandWaterTransportEngineeringChongqingJiaotongUniversityChongqing400074China2．ChongqingYuandaWaterServiceCo．Ltd．Chongqing400060ChinaAbstractMechanicalvaporrecompressionMVＲisadesalinationtechnologythatutilizesthelatentheatofthevaporcompressedbyMVＲitselftoreduceotherenergydemandsitcanconcentrateandreducesalinewastewaterevenzeroemission．InordertoinvestigatethetreatmenteffectofMVＲusinganewplate-typeplasticheatexchangerasitsevaporatorapilot-scaleexperimentwasperformedusingsalinewastewaterastheresearchsubjectandthewaterrecoveryratedesalinationrateconcentrationratiocorrosionandscalingandenergycon-sumptionwereanalyzedemphatically．TheresultshowsthatthecondensatewaterqualitymeetstherequirementofreuseofurbanrecyclingwaterWaterQualityStandardforIndustrialUsesGB/T19923-2005withthewaterre-coveryrateof85．10%desalinationrateof99．66%andconcentrationratioof6．20．TheionproductofCaSO4intheconcentrateisgreaterthanitssolubilityproductwhichindicatespresenceofscalingriskinalong-runningprocess．TheevaporatorofMVＲismadeofsyntheticorganicmaterialsanditcannotbecorroded．Theenergyconsumedontreating1tonwaterisonly46．34kWhlessthanotherevaporationtechnologies．KeywordsMVＲsalinewastewaterzeroemissionspilotscaleexperimentplate-typeplasticheatexchangerkJ2040420140105201501102015－01－252015－05－181988—。[e-mail]*[e-mail]“”、、。、1%1-31%～5%Cl－、SO2－4、Na+Ca2+4。75%。lowtemperature-10multipleeffectdistillationLT-MEDmulti-stageflashMSF、。mechanicalvaporrecompre-ssionMVＲ56、。。MVＲ。MVＲ、MVＲ。、、、。MVＲ。11．13．5%TDS35000．00mg·L－175.00kg30．00kg3．00m3。pH7．45．27×104μs·cm－1TDS3．46×104mg·L－1Na+0．90×104mg·L－1、Cl－0．62×104mg·L－1、Ca2+0．47×104mg·L－1、SO2－41．38×104mg·L－1。1．2MVＲ60℃80kPa。MVＲ1、2、3、45h、、、、MVＲ。2MVＲ2．1MVＲ、、、、、、、、MVＲ18.50、0．55、1．10、0．551．00kW。。12t·d－120kPa60℃2．3℃7。11MVＲFig．1ProcessflowsheetofMVＲpilotexperiment27637MVＲ。80kPa、60℃。。。。2．22．2．1MVＲkηF△ttintvtrV1。hinhVhrhrvhwρvρr。min=mw+mot+m1mw·hrv=k·F·Δtm1=V1·ρrmot=1－η·min1min=mw+m1/η1mv=mw+m12minkg·h－1mwkg·h－1motkg·h－1m1kg·h－1mvkg·h－1。12ξ=mv/min3ξMVＲMVＲ。0．48×103kg·h－10．50×103kg·h－1ξ95．83%。。2．2．2MVＲ、MVＲ。Qi=QtQi=Qin+QrQin=min·hinQr=mr·hr4Qi=min·hin+mr·hr4Qt=Qv+Qw+Qot+Q1+Q2Qv=mv·hvQw=mw·hwQot=min·1－ηQ1=m1·hrvQ2=Qi·η15Qt=mv·hv+mw·hw+min·1－η+m1·hrv+Qi·η15QikJ·h－1QinkJ·h－1QrkJ·h－1QtkJ·h－1QvkJ·h－1QwkJ·h－1QotkJ·h－1Q1kJ·h－1Q2kJ·h－1hinkJ·kg－1hrkJ·kg－1η1%。456ΔQ=Qi－Qt6ΔQ＞0MVＲΔQ＜0MVＲ。1．32×106kJ·h－11．30×106kJ·h－1ΔQ=0．02×106kJ·h－1。2．3MVＲ376310、。2．3．1MVＲ、。60～65℃60℃65℃。65℃。2．3．2MVＲ。50Hz80kPa1～2h。2．3．3。、。2．42．4．165℃。2．4．280kPa。2．4．3、。33．122h89．22%2h85．10%。2。82MVＲFig．2WaterrecoveryrateofMVＲ。9。10。3．2。34299．66%。4156μS·cm－1190μS·cm－1TDS100mg·L－1130mg·L－1SO2－450mg·L－160mg·L－1Cl－5mg·L－130mg·L－1Ca2+48mg·L－160mg·L－1。《》GB/T3MVＲFig．3InfluentwaterqualityofMVＲ47637MVＲ4MVＲFig．4CondensatewaterqualityofMVＲ19923-2005。3．3。、Cl－、Ca2+、K+SiO211。Cl－Cl－。MVＲ。。4～6。6．20。MVＲ14.90%。3．4。。5、、、12。CaSO4、CaCO3、MgCO3。CaSO4。CaSO40．244g·100g－10．0179mol·L－1。CaSO4Ksp3．20×10－4CaSO幑幐4Ca2++SO2－4Qc=Ca2+×SO2－4“”。6．20Ca2+SO2－40.721mol·L－10．886mol·L－1Qc0．5203．20×10－4CaSO4Ca2+SO2－4TDS。CaSO4MVＲ。MVＲ。。3．5MVＲMVＲ13。。MVＲ23．14kW。1tMVＲ46．34kWh。0．50MVＲ23．17。0．42141t0．42t15200．00·t－184．00。MVＲ1t60．8372．42%MVＲ、。41MVＲMVＲ。2MVＲ85．10%99．66%。MVＲ5763106．2。3MVＲ。。、、。4MVＲMVＲ、。1．．2010SONGJing．Ｒesearchofbiologicaltreatmentofthehighsa-linitywastewater．DalianMasterDissertationofDalianPol-ytechnicUniversity2010inChinese2．MBＲ．2009ZHANGZhe．ExperimentalstudyonMBＲprocessfortreatmentofthehighsalinitywastewater．QingdaoMasterDissertationofQingdaoUniversity2009inChinese3．．2010WUHaining．Highsaltchemicalwastewatertreatmentprocessandparameteroptimizationofresearch．GuangzhouMasterDissertationofSouthChinaUniversityofTechnolo-gy2010inChinese4．．200732694-98LEIYunXIEQinglinLIYanhong．Thestudyonthetreat-mentofhighsalinitywastewater．EnvironmentalScienceandManagement200732694-98inChinese5．．200836875-78LUEnxiWUZhen．EnergyconservationwithheatpumpindistillationBasicprinciples．ChemicalEngineering200836875-78inChinese6．．2013295234-236GUChengzhenYANXuZHANGZhiqiangetal．Ｒesearchprogressonmechanicalvaporrecompressionevaporationsysteminperformanceparameters．Food＆Machinery2013295234-236inChinese7．//2013．20131-48．．201131S1175-180ZOULongshengXIEJiacaiZHOUWeiguoetal．Ｒesearchonthecomprehensiveheattransfercoefficientofhorizontaltubefallingfilmevaporator．ProceedingsoftheCSEE201131S1175-180inChinese9．．20112851-5QIChunhuaLIYanYUYongjiangetal．Experimentalstudyonheat-transfercoefficientsofhorizontaltubefalling-filmevaporationequipment．ChemicalIndustryandEngi-neering20112851-5inChinese10．．201433112878-2881XIELixinZHOUWenmengCHENFei．Studyonheat-transferperformanceofhorizontaltubefallingfilmevapo-rator．ChemicalIndustryandEngineeringProgress201433112878-2881inChinese11．．