ISO 4422-1-1996 给水用硬聚氯乙烯(PVC-U)管材和管件规范第1部分:总则
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【英文标准名称】:Pipesandfittingsmadeofunplasticizedpoly(vinylchloride)(PVC-U)forwatersupply-Specifications-Part1:General
【原文标准名称】:给水用硬聚氯乙烯(PVC-U)管材和管件规范第1部分:总则
【标准号】:ISO4422-1-1996
【标准状态】:作废
【国别】:国际
【发布日期】:1996-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC138
【标准类型】:()
【标准水平】:()
【中文主题词】:规范;管;尺寸;管道配件;给水;塑料制品;塑料管;配件;作标记;未增塑聚氯乙烯;聚氯乙烯
【英文主题词】:Dimensions;Fittings;Marking;Pipefittings;Pipes;Plasticpipes;Plasticsproducts;Polyvinylchloride;Specifications;Unplasticizedpolyvinylchloride;Watersupply
【摘要】:Specifiesthegeneralaspectsofpipes,joints,fittingsandancillaries,madeofunplasticizedpoly(vinylchloride)(PVC-U),forpipingsystemsintendedtobeusedforburiedwatermainsandforwatersuppliesaboveground,bothinsideandoutsidebuildings.ReplacesISO4422:1990.
【中国标准分类号】:G33
【国际标准分类号】:23_040_01;91_140_60
【页数】:3P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforEstimationofChlorineDemandofWater
【原文标准名称】:评估水中氯的需求量的标准实施规程
【标准号】:ASTMD1291-2006
【标准状态】:现行
【国别】:
【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】:D19.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:氯化作用;氯;测定;工艺;规范(验收);水
【英文主题词】:chlorine;disinfection;drinkingwater;residualchlorine;watertreatment
【摘要】:Chlorineisaddedtopotablewater,wastewater,andindustrialwaterforavarietyofpurposes.Someofthesepurposesare:5.1.1Toeliminateorreducethegrowthofmicroorganismsinwater,5.1.2Todestroyormodifydecomposableorganicsubstancessoastoreducethebiochemicaloxygendemandofthewater,5.1.3Toeliminateorreducetaste,odors,andcolorinthewater,5.1.4Toseparategreaseinwastewaterbyeliminatingtheprotectivecolloidaleffectofproteinspresent,and5.1.5Todestroyormodifysubstancesinthewastewaterthatreactdirectlybyoxidation,suchasammonia,cyanates,cyanides,ferrousiron,nitrites,phenol,phosphorus,sulfides,sulfites,thiocyanates,andotheroxidizableconstituents.Itisimportanttoavoidover-chlorinationinordertominimizechemicalconsumption,meetrestrictionsspecifiedbyregulatoryagencies,andminimizeequipmentdegradation.1.1Thispracticeprovidesameansofestimatingthequantityofchlorinerequiredtobeaddedtoaunitvolumeofwatertoaccomplishapredeterminedtreatmentobjectiveortocompletelyreactwithallchlorinereactablesubstancesinthewater,orboth.1.2Temperature,pH,andinitialchlorinedosageareallvariablesinestimatingtheoptimumchlorinationpractice.Theeffectsofthesevariablescanbeevaluatedusingthispractice.1.3ChlorineresidualisdeterminedusingTestMethodD1253.1.4Thispracticeisapplicabletoalltypesofwaterinwhichthestatedtreatmentobjectivecanbeevaluatedorresidualchlorinecanbemeasured,orboth.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,seeNote1.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:4P.;A4
【正文语种】:
【英文标准名称】:TherHindexinaqueousandaqueous-organicmedia
【原文标准名称】:水和有机水介质的rH指数
【标准号】:IEC/TR62432-2006
【标准状态】:现行
【国别】:国际
【发布日期】:2006-03
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC65D
【标准类型】:()
【标准水平】:()
【中文主题词】:分析仪;含水的;电气工程;电化学方法;电化学;电极;测量设备;测量仪器;氧化;抗氧化;氧化还原作用;氧化还原电势;rH指数;试验
【英文主题词】:Analyzers;Aqueous;Electricalengineering;Electrochemicalmethods;Electrochemistry;Electrodes;Measuringequipment;Measuringinstruments;Oxidation;Oxidationresistance;Redox;Redoxpotential;rH-values;Testing
【摘要】:ThisTechnicalReportconcernsanalyzers,sensorunitsandelectronicunitsusedforthedeterminationsoftherHindexinaqueousandaqueousorganicmedia.ThisTechnicalReportidentifiestheterminology,definitions,theoryandmethodologyusedforthedeterminationofrHvaluesorredoxsystemsinaqueoussolventoraqueous-organicsolventmixtures.
【中国标准分类号】:Z16
【国际标准分类号】:71_040_40;19_080
【页数】:17P;A4
【正文语种】:英语
