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【英文标准名称】:Waterquality-Evaluationofultimateaerobicbiodegradabilityoforganiccompoundsinaqueousmedium-Statictest(Zahn-Wellensmethod)
【原文标准名称】:水质水介质中有机化合物最终有氧生物降解能力的评价静态试验(察恩-沃依恩斯方法)
【标准号】:ISO9888-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-06
【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/TC147
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;试验;水;水质;测定;有机化合物;生物降解能力;静态的;质量;好气菌
【英文主题词】:Aerobicbacteria;Analysis;Bacteriologicalquality;Biochemicaloxygendemand;Biodegradability;Chemistryofwater;Definitions;Degradability;Determination;Electricalinstallations;Examinationofsludge;Micro-organisms;Microorganisms;Organiccompounds;Organicmatters;Oxygendemand;Quality;Roadvehicles;Specification(approval);Standardmethods;Static;Testprocedures;Testing;Water;Waterorganisms;Waterpollution;Waterpractice;Waterquality
【摘要】:ThisInternationalStandardspecifiesamethodfortheevaluationinaqueousmediumoftheultimatebiodegradabilityand,asadditionalinformation,theprimarybiodegradabilityandthetotaleliminationfromwater,oforganiccompoundsatagivenconcentrationbyaerobicmicroorganisms.TheconditionsdescribedinthisInternationalStandardnormallycorrespondtooptimalconditionsforallowingthemaximumvalueofbiodegradationtooccurwiththechoseninoculuminthetesttime.Theseconditionsmayevenbemorefavourablethaninfull-scalewastewatertreatmentplants,especiallyiftheirhydraulicretentiontime,sludgeageortheadaptationoftheactivatedsludgeisnotoptimal.Themethodappliestoorganiccompoundswhicharea)water-solubleattheconcentrationusedunderthetestconditionsandnotexpectedtobetransformedtoinsolublemetabolitesifbiodegradationandnoteliminationonlyshallbedetermined;b)nonvolatile,orwhichhaveanegligiblevapourpressureunderthetestconditions;c)notlostbyfoamingfromthetestsolution;d)notinhibitorytothetestmicroorganismsattheconcentrationchosenforthetest.Inhibitoryeffectscanbedeterminedusingasuitabletestmethod(e.g.seeISO8192).Ifthetestcompoundistoxic,thetestconcentrationmustbelowered,orapre-exposedinoculumcanbeused.ThisInternationalStandardisalsoapplicabletothemeasurementofbiodegradationandeliminationofdissolvedorganiccompoundsinwastewater(alsocalled"testcompound"inthemethod).NOTEIfmoreinformationisrequiredtopredictthebehaviouroftestcompoundsorwastewaterinatreatmentplant,asimulationtest(e.g.theactivatedsludgesimulationtestISO11733)shouldbeperformed.Forappropriateuseofthismethodandforalternativebiodegradationmethods,seeISO15462.
【中国标准分类号】:Z50
【国际标准分类号】:13_060_70
【页数】:11P.;A4
【正文语种】:英语