DIN 50312-1977 磨料检验.压力喷射用试验箱

上一篇: BS 1296-3-1978 单刃刀具规范.第3部分:对焊刀具和坯件
下一篇: BS 2S 136-1977 含1%碳-铬钢(真空电弧再熔化的)方坯、棒材、锻件及零件规范.(限定等圆断面25mm)

【英文标准名称】:Chemicalsusedfortreatmentofwaterintendedforhumanconsumption-Calciummagnesiumcarbonate;GermanversionEN16003:2011
【原文标准名称】:用于供人类食用的水处理化学品.碳酸镁.德文版本EN16003-2011
【标准号】:DINEN16003-2012
【标准状态】:现行
【国别】:德国
【发布日期】:2012-02
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Acceptancespecification;Calciumcarbonates;Chemicalproperties;Dolomite;Drinkingwatertreatment;Filteringmaterials;Filters;Filtration;Magnesiumcarbonate;Marking;Physicalproperties;Potablewater;Properties;Purity;Puritycriterion;Servicewater;Specification(approval);Storage;Testing;Transport;Treatment;Water;Waterpractice;Waterpurification;Watersupply;Watersupplyengineering;Watertreatment
【摘要】:
【中国标准分类号】:G77
【国际标准分类号】:71_100_80
【页数】:15P;A4
【正文语种】:德语


【英文标准名称】:StandardPracticeforIntegrityTestingofWaterFiltrationMembraneSystems
【原文标准名称】:水过滤膜系统的完整性测试的标准实施规程
【标准号】:ASTMD6908-2006(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.08
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:continuousmonitoring;integrity;membrane;multiplexing;pressuredecay;solubledyetest;TOCtest;vacuumdecay;Dyetracers;Filters/filterprocedures--watertesting;Integritytesting;Membranefilters(MF)--watertesting;Pressuredecay;Solubledye
【摘要】:Theintegritytestmethodsdescribedareusedtodeterminetheintegrityofmembranesystems,andareapplicabletosystemscontainingmembranemoduleconfigurationsofbothhollowfiberandflatsheet;suchas,spiral-woundconfiguration.InallcasesthepracticesapplytomembranesintheRO,NF,andUFmembraneclasses.However,theTOCandDyeTestpracticesdonotapplytomembranesintheMFrangeortheupperendoftheUFporesizerange(0.01x03BC;mandlargerporesizes)duetoinsignificantorinconsistentremovalofTOCmaterialbythesemembranes.Thesemethodsmaybeusedtoidentifyrelativechangesintheintegrityofasystem,orusedinconjunctionwiththeequationsdescribedin9.4,toprovideameansofestimatingtheintegrityintermsoflogreductionvalue.Forcriticalapplications,estimatedlogreductionsusingtheseequationsshouldbeconfirmedbyexperimentfortheparticularmembraneandsystemconfigurationused.Theabilityofthemethodstodetectanygivendefectisaffectedbythesizeofthesystemorportionofthesystemtested.Selectingsmallerportionsofthesystemtotestwillincreasethesensitivityofthetesttodefects.Whendeterminingthesizethatcanbetestedasadiscreteunit,usetheguidelinessuppliedbythesystemmanufacturerorthegeneralguidelinesprovidedinthisstandard.Theapplicabilityofthetestsislargelyindependentofsystemsizewhenmeasuredintermsoftheimpactofdefectsonthetreatedwaterquality(thatis,thesystemLRV).Thisisbecausethebypassflowfromanygivendefectisdilutedinproportiontothesystemstotalflowrate.Forexample,a10-modulesystemwithasingledefectwillproducethesamewaterqualityasa100-modulesystemwithtenofthesamesizedefects.1.1Thispracticecoversthedeterminationoftheintegrityofwaterfiltrationmembraneelementsandsystemsusingairbasedtests(pressuredecayandvacuumhold),solubledye,continuousmonitoringparticulatelightscattertechniques,andTOCmonitoringtestsforthepurposeofrejectingparticlesandmicrobes.Thetestsareapplicabletosystemswithmembranesthathaveanominalporesizelessthanabout1x00B5;m.TheTOC,andDye,testsaregenerallyapplicabletoNFandROclassmembranesonly.1.2Thispracticedoesnotpurporttocoverallavailablemethodsofintegritytesting.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.7.1Thispracticecoversthedeterminationofintegrityformembranesystemsusingthepressuredecaytest(PDT)andvacuumdecaytest(VDT).7.2Thetestsmaybeusedonmembranesinallclasses,ROthroughMF,andaresuitableforhollowfibers,tubularandflatsheet(suchasspiralwound)configurations.However,thePDTismostcommonlyemployedforin-situtestingofUFandMFsystemsandtheVDTfortestingNFandROelementsandsystems.SeePracticeD3923.10.1ThispracticeisapplicablewherethemembranesystemandwatersourcewillallowthemonitoringofTOCbothupstreamanddownstreamofthesystem,andatleastorderofmagnitudedifferencefromthefeedcanbemeasuredinthepermeate(product)water.SeeD4839