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【英文标准名称】:StandardTestMethodforAssessingTreatabilityorBiodegradability,orBoth,ofOrganicChemicalsinPorousPots
【原文标准名称】:有机化学生物降解评估可处理性的标准试验方法
【标准号】:ASTME1798-1996(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【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】:Activatedsludge;Biochemicaloxygendemand(BOD);Biodegradation;Dissolvedorganicchemicals;Mixedliquorvolatilesuspendedsolids(MLVSS);Porouspottest;Sludge;Totaloxygendemand(TOD);Treatability;Wastewatertesting/treatment
【摘要】:Secondarywastewatertreatmentusingactivatedsludgeisoneofthemostimportantbiologicaltreatmentprocessesinusetoday.Theporouspotsimulatestheactivatedsludgesewagetreatmentprocessinthelaboratoryandprovidesdatathatcanbeusedtopredictthefateoforganiccompoundsinfullscaleplants.Agoodcorrelationbetweenthelaboratorytestandfullscaleplantsisachievedbytheuseofprimaryeffluentorsettleddomesticsewageandcontrollingkeyparametersinrangestypicalofsuchtreatmentprocess.Theseparametersincludetemperature,pH,DOconcentration,hydraulicresidencetime(HRT)andsludgeretentiontime(SRT).1.1Thistestmethodcoverssimulatingtheactivatedsludgesewagetreatmentprocessandthereforegivesameasureoftheextentofbiodegradationorremovallikelytooccurduringsewagetreatment.1.2Assessmentoftreatabilityorbiodegradability,orboth,ofwatersolubleorganiccompoundsintheporouspottestrequiresdissolvedorganiccarbon(DOC)measurementsorspecificchemicalanalysis.1.2.1Dissolvedorganiccarbon(DOC)measurements,relativetothecontrols,canbeusedtocalculatetheremovalofthetestchemicalorwatersolubleresiduesbytheporouspottreatment(see12.3).TheDOCmeasurementsdonotidentifywatersolublechemicals.Specificchemicalanalysis,ontheotherhand,canbeusedtoidentifyandquantifytheparenttestchemicalor(ifstandardsareavailable)anywatersolubleresiduesformedbytheporouspottreatment.Aspecificchemicalanalyticalmethodmusthavealimitofdetection(LOD)x2264;0.1mg/Linwaterorx2264;0.1mg/Kginsolids.1.3Thefeaturethatdistinguishesthistestfromotheractivatedsludgesimulationtestsistheretentionoftheactivatedsludgeinaporousliner,thateliminatestheneedforasecondaryclarifierandfacilitatescontrolofthecriticalparameter,thesludgeretentiontime(SRT).1.4Porouspotscanbecompletelysealedandtestsusing14C-labeledtestcompoundsarethenpossible.Carbondioxideintheexhaustgasandbicarbonateintheeffluentcanbeusedtogethertoassesstheextentofmineralization,andlevelsofradiolabelinthesludgeandintheaqueousphasemayalsobedetermined.1.5BysimultaneouslymeasuringtheefficiencyofthepotsinremovingDOC,itisalsopossibletodeterminewhetherthetestcompoundhasanyadverseeffectonnormalsewagetreatmentprocesses.1.6TheSIunitsgiveninparenthesesareforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecifichazardstatementsseeSection6.
【中国标准分类号】:Z10
【国际标准分类号】:13_030_99
【页数】:13P.;A4
【正文语种】:英语