好氧颗粒污泥实现同步硝化反硝化_杨麒

好氧颗粒污泥实现同步硝化反硝化杨　麒,李小明,曾光明,谢珊,刘精今(湖南大学环境科学与工程系,长沙　410082)　　摘要:采用人工配制的模拟生活污水,通过对运行条件的调控,在序批式反应器(SBR)中培养出了高活性的好氧颗粒污泥,颗粒污泥浓度达到4.5g/L以上,SVI值在32.5左右,反应器对于COD、NH3-N的去除率分别在83.6%～92.8%和82.3%～98.5%之间。实验结果表明:由于好氧颗粒污泥的存在,SBR反应器内发生了同步硝化反硝化(SND)反应,而不是通常所认为的顺序式硝化反硝化(SQND)反应。关键词:好氧颗粒污泥;序批式反应器;同步硝化反硝化;顺序式硝化反硝化中图分类号:X703　　文献标识码:A　　文章编号:1002-1264(2003)01-0040-03SimultaneousNitrificationandDenitrificationbyAerobicGranularSludgeYANGQi,LIXiao-ming,ZENGGuang-ming,XIEShan,LIUJing-jin(DepartmentofEnvironmentalScienceandTechnology,HunanUniversity,Changsha　410082,China)Abstract:TheaerobicgranularsludgewithhighactivityinSequencingBatchReactor(SBR)fedwithasyntheticdomesticwastewateriscultivatedbycontrollingtheoperatingconditions.TheMixedLiquidSuspendedSolids(MLSS)andtheSludgeVolumetricIndex(SVI)ofthegranularsludgeareabove4.5g/Landabout32.5,respec-tively.TheremovalratesofCODandNH3-Nreach83.6%to92.8%and82.3%to98.5%,respectively,inthereactor.Itisshownthatthesimultaneousnitrificationanddenitrification(SND)ratherthan