DO对同步硝化反硝化影响及动力学_徐伟锋

DO对同步硝化反硝化影响及动力学徐伟锋1,孙力平1,古建国2,郑先强2(1.天津城市建设学院　天津,300384;　2.天津市环境保护科学院　天津,300191)　　摘要:研究生物接触氧化法中DO对同步硝化反硝化系统脱氮效率的影响。研究结果表明:在溶解氧(DO)为1.0～3.0mg/L范围内,随着反应器内溶解氧浓度的降低,总脱氮去除率提高,保持较好脱氮率的最佳DO为2mg/L左右,并分析了其原因;同时探讨了DO为2mg/L时的动力学方程。关键词:同步硝化反硝化;生物膜;溶解氧;动力学方程中图分类号:O643.12　　文献标识码:A　　文章编号:1002-1264(2003)01-0008-03EffectofDOonSimultaneousNitrificationandDenitrificationandKineticEquationXUWei-feng1,SUNLi-ping1,GUJian-guo2,ZHENGXian-qiang2(1.TianjinUrbanConstructionInstitute,Tianjin　300384,China;2.TianjinAcademyofEnvironmentProtection,Tianjin　300191,China)Abstract:Inthepaper,theeffectofDOconcentrationonthenitrogenremovalefficiencyisstudiedinbiofilmsimul-taneousnitrificationanddenitrification(SND).ResultsshowthattotalnitrogenremovalefficiencyhasatendencytorisewiththedecreaseofDOconcentrationbetween1.0and3.0mg/LinthereactorandtheoptimalDOconcentra-tionisabout2mg/L.Andthereasonisanalyzed.Inaddition,kineticequationisstudiedwhenDOis2mg/L.Keywords:simultaneousnitrificationanddenitrification(SND);biofilm;DOco