高效亚硝酸型反硝化菌生长特性及脱氮研究张云霞

声尸尹口etobacle尹iaandFlavobacleriaweredominantclsases.ComPaerdtoanilineandehloroaniliens一degardignaerobicgraunles,htePoPulationdiversiytwaslowerintheaerobieaniline一degardinggarnules.ThecomPactstrUcotreofaerobicgranulesoffesrseVeraladvantages,namelyeasyseParationofbiomassfrombulkliquidduringsettlingPhase,Portectionofeellsagainsthteeffeetsofanilienotxieiyt.hTeerfore,hteaniline一degradingaerobiegarnulescanbeexPloitedtodesigncomPacthigh-arteaeorbiegrantllarsystemsforthetreatmentofindustiralwastewaetsreonatininghihgeoneenatrtionsofanilineandhoterihnibiotyrehemieals.Keywords:Aeorbiegranule:Aniline:Sequentialairliftbioreactor(SABR):OPeartionStartegy:KinetiCS高效亚硝酸型反硝化菌生长特性及脱氮研究张云霞,周集体,袁守志,张秀红(大连理工大学环境与生命学院116023摘要:通过对反硝化污泥的驯化和富集,得到富含亚硝酸型反硝化细菌的混合菌体。研究了不同环境因子对该菌体生长和脱氮速率的影响。结果表明,该菌体属于兼氧菌,只有在氧缺乏的环境下才能发生反硝化作用,具有较强的耐盐特性,可耐受13%的盐浓度。最适的生长和脱氮条件是以柠檬酸三钠为碳源,c加为4,温度30℃,pH一9。在此条件下,亚硝酸盐氮的比降解速率可达到0.25h-l。关键词:生物脱氮,亚硝酸型反硝化菌,比脱氮速率EffeetofcarbonutilizingonnitratereduetionandnitrousoxideemissionindenitrifyingProcessLiPing`’,LiQiuhuaZ,zhuPin即i飞,,wuJi曲ua`andLiangshi山on扩Sehoolofenviornmentalseieneeandengineering,SouthChinaUniversiytofeTehnology,Guanghzou,PR.China2sehoolorbioseieneeandbioengineering,southehinauniversiytof介ehnolo跳ouangzhou,RR.ehina*CorresPondingauthof,[phone],ABSTRACTNitrousoxide(N20)15animPortantgreehnousegasandhassigniifcantimPaetontheenvironment.DenitrifyingProeessofwastewatertreatment15oneoftheimPortantanthroPogeniesoureesinatmosPhereNZO.NZO15anintemrediateduringdenitrifyingProeesswhieheonsumesogranicsubstratesaseleetrondonors.Thisstudy15intendedtoscreensomeoPtimalearbonsubstratestosuPPressNZOemissionsandmaintainthegreatdenitrifyingPotential.Exogenousogranieeabronsincludingglucose,sucroseandsodiumaeetatewereusedtoevaluatetheireffeetsonNZOemissionandnitratereductionduringthedenitrifyingProeessofSBRs.TheresultsshowedthatthetyPesofograniccabronsubstratesandtheCODN/一NO3一ratiohadsigniifeant123