【英文标准名称】:StandardTestMethodsforOperatingPerformanceofParticulateCation-ExchangeMaterials
【原文标准名称】:粒状阳离子交换材料使用性能的标准试验方法
【标准号】:ASTMD1782-1995(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【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】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cationresin;ionexchange;operatingperformance;Calciumionremoval(fromwater);Cationexchangecapacity;Hydrogencyclemethod;Ionexchangeresins;Magnesiumionremoval(fromwater);Performance--wateranalysisequipment;Sodiumcyclemethod;So
【摘要】:Cationexchangematerialsarefrequentlyusedinthesodiumformtoexchangedivalentandtrivalentionsintheinfluentwaterforsodiumionsontheresinsites.Thisprocessiscommonlyreferredtoassofteningwatersinceitremovesthoseionsthatformax201C;hardx201D;curdofinsolublesaltswiththefattyacidsusedinsomesoapsandthatalsoprecipitatewhenwaterisboiled.Insuchaprocess,sodiumchlorideisusedastheregeneranttoreturnthecation-exchanginggroupstothesodiumform.Thistestmethodisintendedtosimulatetheperformanceofsuchmaterialsinactualusage.Itmaybeusedeithertocomparetheperformanceofnewmaterialsortocomparetheperformanceofamaterialthathasbeenusedwithitsoriginalperformance.Regenerantconcentrationsanddosagesusedhereinaretypicalforthetypesofmaterialsusedinthisapplication.Ifdifferentconcentrationsoramountsofregenerantareagreeduponbypartiesusingthistestmethod,thisfactshouldbestatedwhentheresultsarereported.Similarly,thetestwaterspecifiedistheagreeduponstandard.Whereothertestwatersorthewatertobetreatedareusedinthetest,theanalysisofthewaterintermsoftotalsolids,sodium,calcium,magnesium,otherdi-ortrivalentmetalsaswellasthemajoranionspresentshouldbereportedwiththetestresults.1.1Thesetestmethodscoverthedeterminationoftheoperatingcapacityofparticulatecation-exchangematerialswhenusedfortheremovalofcalcium,magnesium,andsodiumionsfromwater.Itisintendedforuseintestingbothnewandusedmaterials.Thefollowingtwotestmethodsareincluded:
Sections
TestMethodAx2014;SodiumCycle
8to14
TestMethodBx2014;HydrogenCycle
15to21