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【英文标准名称】:StandardGuideforWaterAnalysisforReverseOsmosisandNanofiltrationApplication
【原文标准名称】:反渗透和纳滤膜水质分析的应用的标准指南
【标准号】:ASTMD4195-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:nanofiltration;reverseosmosis;wateranalysis;Brackishwater/brines;Coalproducts;Desalinating(reverseosmosis)devices;Flowandflowrate--water;Reverseosmosis(RO)installations;Seawater(natural/synthetic)
【摘要】:TheperformanceofROorNFmembranesisstronglyinfluencedbythecompositionofthefeedsolution.Overallsaltrejectionisdependentupontheratioofmonovalenttopolyvalentionsaswellasthesumtotalofionspresent.ThepermeateflowrateofROorNFdevicesisalsodependentuponthesumtotaloftheionspresentandtheoperatingtemperature,pressure,andrecoveryrate.AnalysesandmeasurementsperformedinthisguidewillprovidevitaldataforsaltrejectionandpermeateflowprojectionsofROorNFsystemsforspecificfeedwaters.TherecoveryatwhichaROorNFsystemcanbesafelyoperatedisdependentuponthecompositionofthefeedsolution.TheanalysesandmeasurementsperformedinthisguidewillprovidedataforthecalculationofthemaximumrecoveryofaROorNFsystemforagivenfeedsolution.TheanalysesandmeasurementsperformedinthisguidewillbeofgreatassistanceindeterminingthepretreatmentrequirementsforaROorNFsystemonagivenfeedwater.1.1Thisguidecoverstheanalysesthatshouldbeperformedonanygivenwatersampleifreverseosmosis(RO)ornanofiltration(NF)applicationisbeingconsidered.1.2Thisguideisapplicabletowatersincludingbrackishwatersandseawatersbutisnotnecessarilyapplicabletowastewaters.1.3Thisisaguideonlyandshouldnotbeconstruedasadelineationofallionsknowntoexistinwaters.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J77
【国际标准分类号】:
【页数】:2P.;A4
【正文语种】:英语