低溶解氧条件下生物脱氮研究中的新现象_胡林林

应用与环境生物学报　2003,9(4):444～447　　ChinJApplEnvironBiol=ISSN1006-687X　2003-08-25　低溶解氧条件下生物脱氮研究中的新现象＊胡林林＊＊　王建龙　文湘华　钱易(清华大学环境模拟与污染控制国家重点联合实验室　北京　100084)关键词　低溶解氧;脱氮;好氧颗粒污泥;短程脱氮;同时硝化反硝化;好氧反氨化;OLAND工艺(图1表1参36)CLC　X172IMPROVEMENTSONBIOLOGICALNITROGENREMOVALUNDERLOWDISSOLVEDOXYGENCONCENTRATION＊HULinlin＊＊,WANGJianlong,WENXianghua&QIANYi(StateJointKeyLabofEnvironmentSimulationandPollutionControl,TsinghuaUniversity,Beijing　100084,China)Abstract　Inaerobicwastewatertreatmentprocess,lowdissolvedoxygen(DO)concentrationwasgenerallythoughttobeharmfultoaerobicmicroorganisms,especiallytonitrifyingmicrobes.Infact,ammoniumcouldbewellconvertedunderlowDOandlowDOconditioncouldobviouslyleadtoenergysaving.Inrecentyears,somenewphenomenawerefoundinnitro-genremovalreactorsoperatedatlowDOconcentration,suchassludgegranulation;short-cutnitrification-denitrification;simultaneousnitrification-denitrificationanddenitrificationbyautotrophicnitrifier.Thesephenomenawerevaluablebecausetheycouldgivenewmethodorsomeconvenience