【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】:
基本信息
| 标准名称： | 高压整流管阳极电流与欠热时阳极电流的测试方法 |
| 英文名称： | Methods of measurement for anode current and anode current on underheated condition of high-voltage rectifier tubes |
| 中标分类： |
综合 >>
标准化管理与一般规定 >>
技术管理 |
| 发布日期： | 1973-02-26 |
| 实施日期： | 1973-07-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 1页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 综合 标准化管理与一般规定 技术管理