【英文标准名称】:StandardTestMethodforDeterminingAnaerobicBiodegradationPotentialofOrganicChemicalsUnderMethanogenicConditions
【原文标准名称】:测定产甲烷条件下有机化合物厌氧性生物降解潜能的标准试验方法
【标准号】:ASTME2170-2001(2008)
【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】:E47.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Anaerobicsewagetreatment;Biodegradation;Inoculumprocessing;Methanogenicenvironments;Organicchemicals
【摘要】:Biodegradationisanimportantprocessfortheremovalofmanychemicalsubstancesinanaerobicenvironments.Inmethanogenicenvironments,thisprocessinvolvesdissimilationtocarbondioxideandmethane.Thistestmethodhasbeendevelopedtoscreenorganicchemicalsforanaerobicbiodegradationpotentialundermethanogenicconditions,wherethereisnoingressofoxygen.Ahigh-biodegradabilityresultinthistestmethodisgoodevidencethatthetestsubstancewillbebiodegradableinwastetreatmentplantanaerobicdigestersandinmanynaturalenvironments.Conversely,alow-biodegradationresultmayhavecausesotherthanpoorbiodegradabilityofthetestsubstance.Inhibitionofthemicrobialinoculumbythetestsubstancemayhaveoccurredattheconcentrationstested,orconditionsinthetestmayhavebeeninappropriateforthedevelopmentofanacclimatedmicrobialpopulation.Toxicityshouldbesuspectedwhenthegasproductionintheblanksexceedsthatinthetestvessels.Insuchcases,furtherworkisneededtoassesstheanaerobicbiodegradationpotentialofthechemical.Anestimateoftheexpectedenvironmentalconcentrationwillhelptoputanyobservedtoxiceffectsintoperspective.1.1Thistestmethodcoversscreeningproceduresforthedeterminingthebiodegradationpotentialoforganicchemicalsundermethanogenicconditionsusinganinoculumfromanaerobicsewagetreatment.Theconditionsdescribedinthistestmethodarenotnecessarilyoptimalforbiodegradation,sinceitinvolvesadiluteinoculumandarelativelyhighconcentrationoftestchemical.1.2Thetestmethodisapplicabletomostorganicchemicals,assumingthattheycanbeaccuratelydosedintothetestsystems.Thetestisnotapplicabletochemicalsthatareinhibitoryattheconcentrationusedinthetestorthosewhosevolatilitygeneratessignificantheadpressureinthetestvessels.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection8.
【中国标准分类号】:Z04
【国际标准分类号】:13_060_70
【页数】:5P.;A4
【正文语种】:英语