作者:标准资料网 时间:2024-05-20 17:45:18   浏览:8223   来源:标准资料网

【英文标准名称】:Waterquality;methodforassessingtheinhibitionofnitrificationofactivatedsludgemicro-organismsbychemicalsandwastewaters
【原文标准名称】:水质评价化学药品和污水对活性污泥中微生物硝化抑制作用的方法
【标准号】:ISO9509-1989
【标准状态】:作废
【国别】:国际
【发布日期】:1989-10
【实施或试行日期】:1989-10-15
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC147
【标准类型】:()
【标准水平】:()
【中文主题词】:污泥;水质;质量;测定;水;试验;擒纵机构;污水处理的沉淀物;抑制;微生物分析;微生物
【英文主题词】:
【摘要】:1ThisInternationalStandardspecifiesamethodforassessingtheshort-terminhibitoryeffectsoftestsubstancesonnitrifyingbacteriainactivatedsludge.Theinhibitoryeffectisestimatedoveranexposureperiodof4h.2Themethodissuitableforusewithnitrifyingactivatedsludgederivedfromdomesticsewage.Itisalsopossibletousenitrifyingsludgesderivedfromsyntheticsewage.3Initially,thenitrifyingactivityoftheactivatedsludgeisverifiedbyadditionofaspecificinhibitor(e.g.allylthiourea).Ifthenitrificationrate(see8.1)iswithinasuitablerangeforthetest[2to6,5milligramsofnitrogenpergramsuspendedsolidsperhour(2mgofN/(g·h)to6,5mgofN/(g·h)],thesludgeisuseddirectly;ifnot,adjustmentsarenecessary(seeclause9).4Themethodisapplicabletonon-volatilechemicalsubstanceswhicharesolubleinwaterandalsotowastewaters.Itispossibletouseinsolublesubstances,ifcareistakentoensureasmuchhomogeneityaspossible.5Itisimportanttostressthatsludgesfromdifferentsourcesresponddifferentlytoagivenconcentrationofanin-hibitorandthisisprobablydue,atleastinpart,toreactionbe-tweentheinhibitorandcomponentsofthesludgeresultinginapartialnullifyingofthetoxiceffect.Also,sincethetestlastsonly4h,itmustbeborneinmindthatanyinhibitoryeffectsmaydiminish,orincrease,overalongerperiod,e.g.inthecon-tinuousactivatedsludgesystem.
【中国标准分类号】:Z05
【国际标准分类号】:13_060_50
【页数】:6P;A4
【正文语种】:英语