【英文标准名称】:StandardPracticeforCalculationandAdjustmentofSulfateScalingSalts(CaSO4,SrSO4,andBaSO4)forReverseOsmosisandNanofiltration
【原文标准名称】:反渗透和纳米渗透用硫酸盐标定盐分(CaSO4,SrSO4和BaSO4)的计算和修正的标准实施规程
【标准号】:ASTMD4692-2001(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【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】:barium;calcium;membranefouling;membranescaling;nanofiltration;reverseosmosis;strontium;sulfatescaling;Sulfatescalingsalts;Watercontent;Bariumsulfate(BaSO4);Brackishwater/brines;Concentration(ofelements);Nanofiltration(
【摘要】:Inthedesignandoperationofreverseosmosisandnanofiltrationinstallations,itisimportanttopredicttheCaSO4,SrSO4,andBaSO4scalingpropertiesoftheconcentratestream.Becauseoftheincreaseintotaldissolvedsolidsandtheincreaseinconcentrationofthescalingsalts,thescalingpropertiesoftheconcentratestreamwillbequitedifferentfromthoseofthefeedsolution.Thispracticepermitsthecalculationofthescalingpotentialfortheconcentratestreamfromthefeedwateranalysesandthereverseosmosisornanofiltrationoperatingparameters.ScalingbyCaSO4,SrSO4,andBaSO4willadverselyaffectthereverseosmosisornanofiltrationperformance.Thispracticegivesvariousproceduresforthepreventionofscaling.1.1Thispracticecoversthecalculationandadjustmentofcalcium,strontium,andbariumsulfatesfortheconcentratestreamofareverseosmosisornanofiltrationsystem.Thecalculationsareusedtodeterminetheneedforscalecontrolintheoperationanddesignofreverseosmosisandnanofiltrationinstallations.Thispracticeisapplicableforalltypesofreverseosmosisdevices(tubular,spiralwound,andhollowfiber)andnanofiltrationdevices.1.2Thispracticeisapplicabletobothbrackishwatersandseawaters.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.
【中国标准分类号】:G12
【国际标准分类号】:71_120_99
【页数】:4P.;A4
【正文语种】:英语


【英文标准名称】:Graphictechnology.Variabledataexchange.UsingPDF/X-4andPDF/X-5(PDF/VT-1andPDF/VT-2)
【原文标准名称】:图形技术.可变打印数据交换.利用PDF/X-4和PDF/X-5(PDF/VT-1和PDF/VT-2)
【标准号】:BSISO16612-2-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2010-11-30
【实施或试行日期】:2010-11-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:数据元素;数据交换;数据格式;数据结构;定义(术语);数字的;数字数据;文献;编码;图形的;图形数据处理;图解表示法;图形技术;印刷业;识别;信息交换;布置;标记语言;PDF;印刷;规范(验收)
【英文主题词】:Dataelements;Dataexchange;Dataformats;Datastructures;Definitions;Digital;Digitaldata;Documents;Encoding;Graphic;Graphicdataprocessing;Graphicrepresentation;Graphictechnology;Graphictrade;Identification;Informationinterchange;Layout;Markuplanguage;PDF;Printing;Specification(approval)
【摘要】:
【中国标准分类号】:A17
【国际标准分类号】:35_240_30;37_100_99
【页数】:48P;A4
【正文语种】:英语