新型双泥生物反硝化除磷脱氮工艺_罗固源

新型双泥生物反硝化除磷脱氮工艺罗固源,　罗　宁,　吉芳英,　许晓毅(重庆大学城市建设与环境工程学院,重庆400045)　　摘　要:　在对生物脱氮与除磷机理进行深入研究后发现,生物脱氮与除磷是两个相对独立而又相互交叉的生理过程,其交叉点是部分聚磷菌在缺氧状态下的反硝化吸磷脱氮。在此基础上提出的新型双泥生物反硝化除磷脱氮工艺(由两个不同功能的SBR反应器组成)成功地解决了硝化菌与聚磷菌的泥龄之争、反硝化与聚磷菌厌氧释磷的矛盾等难题。该工艺运行稳定且处理效果良好,特别适合于处理BOD5TP值低的污水。　　关键词:　除磷脱氮;　双泥;　聚磷菌中图分类号:X703.1　　文献标识码:A　　文章编号:1000-4602(2002)09-0004-04NewBiologicalDenitrificationProcesswithTwo-SludgeforNitrogenandPhosphorusRemovalLUOGu-yuan,　LUONing,　JIFang-ying,　XUXiao-yi(SchoolofUrbanConstructionandEnvironmentalEngineering,ChongqingUniversity,Chongqing400045,China)　　Abstract:　Aftermakingthoroughstudyonmechanismofnitrogenandphosphorusremoval,itwasfoundthatbiologicalremovalofnitrogenandphosphorusistwoindependentandoverlapbiologicalprocesses.Theoverlaprepresentsthatdenitrification,phosphorusuptakeandnitrogenremovaloccurunderanoxicconditionduetocontributionofphosphorusaccumulatingorganisms.Onbasisofthiscon-ception,anewtwo-sludgetreatmentsystem(consistsoftwoSBRsystemwithdifferentfunctions)wasdevelopedforbiologicaldenitrificationandremovalphosphorus.ItgivesasuccessfulsolutiontothedifferentrequirementofnitrifyingbacteriaandPAOsonsludgeageandthecontradictionbetweendenitrificationandanaerobicphosphorusreleasefromPAOs.Theprocesshasadvantagesofsteadyoper-ationandgoodtreatmenteffect,andisparticularlysuitablefortreatmentofwastewaterwithlowBOD5TPratio.　　Keywords:　nitrogenandphosphorusremoval;　two-sludge;　phosphorusaccumulatingor-ganisms　　基金项目:国家科技攻关项目(2001BA604A01)　　单泥生物脱氮除磷工艺中聚磷菌、反硝化菌、硝化菌等共存于同一活性污泥系统,必然存在硝化菌与聚磷菌的不同泥