15N在污水生物脱氮机理研究中的应用刘贤荣

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[] 2002-06-07;[] 2003-01-09[] (1975-),,,.δ15N刘贤荣1 闫秀懿1 张永祥2(1., 130026;2., 100022)[ ]近年来,硝酸盐氮的污染愈来愈严重。无论是地表水还是地下水都受到不同程度的氮污染。控制氮污染及处理氮污染问题已经提到我国水污染控制的议事日程。本文探索微生物处理含氮污水的过程中反硝化作用的脱氮机理,使用δ15N标识技术研究水体中三氮运移转化过程中的质量不守恒,证明δ15N标识技术研究确定不同形态氮的数量各系是可行的。研究水体中三氮质量不守恒现象,将解决含氮污水生物净化中污泥上浮问题、氮污染含水层生物修复中气阻问题。[]同位素标识;污水;生物除氮[]X52[]A[]1001-2427(2003)01-0054-041 ,,(,、)(、)。,:(1)。,。:,、、、。。(2)。NO-3NO-2N2。。。NH+4、NO-2、NO-3、NO2、N2C5H7O2N(),。15N,,。。2 2.1 。,。20cm、60cm80cm;0()、 22  12003    3         吉 林 地 质JILINGEOLOGY         Vol.22,No.1Mar., 2003 1 Fig.1 Relationcurvesbetweentheorganismgrowthandtime20cm60cm,61~6。1~6,NO-3,。。。1。2 Fig.2 Theexperimentdevice1.;2.;3.;4.;5.2.2 2。6,NO3-,。6100ml。:(5‰)(KNO3,2‰),K15NO3(0.1‰),(1‰),(0.2‰),(1‰)。2.3 ,:NO-3;NO-2N-(1-)-;NH+4;CODCTL-12;DOTJPB-607;pHEhPHS-3CpH;,XSP-18A。5。δ15NFinniganMAT-251。δ15N,,N2。N2。(1) ,CuO()()1g,,,,520℃34h,N2。(2)(Kjeldahldigestion) NH+4,NaOHKOH,N,,N2,NH+4N2。δ15N。,3~4mg。,1mg。3 3.1 NO-3。,96h,3。55 1        :δ15N          3 NO-3Fig.3 NO-3concentrationcurveswiththetimechangeNO-2,12h24h25mg/L,42h1.5mg/L,72h,4mg/L,96h2mg/L。NO-2,,4。NH+4,,5,24h,NH+411.8mg/L,。6~20mg/L,4 NO-2Fig.4 NO-2concentrationcurveswiththetimechange6。,。,,δ15N,47.6‰,。15N,NO-3-Nδ15N0.05‰,68h72h,δ15N5 NH+4Fig.5 NH+4concentrationcurveswiththetimechange6 Fig.6 ThreeNconcentrationswiththetimechange149.89‰100.65‰,,。3.2 ,,。72h2×108/L。δ15N1970.1‰1911.5‰,,NO-3。(7)。3.3 。12,60,72,108h,,,。22,66,102h,,,,8。56                                    2003 7 Fig.7 Quantitiesofmicroorganismwiththetimechange,。pH。pH7.5~8.5,,,,(9)。Eh,8 Fig.8 Temperaturecurveswiththetimechange-35+50,,。,Eh,。18h,Eh。,Eh。4 ,δ15N9 pHFig.9 pHvaluewiththetimechange。,,δ15N,,,。   [1] .δ15N[J].,1994,26(6):332-334.[2] .15N[M].:,1992,106-127.[3] ,,.[J].,1993,20(3):108-115.(82)57 1        :δ15N          [2]  .—[J].,2002(2).Asyntheticsearchlibraryonthenationalgeoscience———《GeologicalAbstractofChina》CHENYu-e LIULi-min(TheLibraryofEconomicUniversityofShijiazhuang,Shijiazhuang050031,China)[Abstract] Thepaperintroducesgeneralsituation,characteristicsandusemethodof《Geo-logicalAbstractofChina》.Itprovidesanewgeologicliteraturesourceforgeologists.[Keywords] searchlibrary;geology;abstract(57)Theapplicationoftheδ15NsewageorganicdenitrificationstudyLIUXian-rong1 YANXiu-yi2 ZHANGYong-xiang2(1.JilinUniversity,Changchun130026,China;2.BeijingPolytechnicUniversity,Beijing100022,China)[Abstract] Inrecentyears,pollutionofthenitratenitrogenismoreandmoreserious,as-sociatedwithsurficialandundergroundwaterpollutionindifferentdegree,controllinganddis-posingnitrogenpollutionhavealreadybeenputontheagendaforwaterpollution.Themecha-nismofthedenitrificationinthedisposalofcontaminatedwaterwithnitrogenisdiscussedinthispaper.Byusingtheδ15Nidentifyingtechnique,thestudyofthenonconservationofmassinmovementandchangeprocessofthethreeNinwaterismade.Itisprovedthatitisfeasibletodeterminethequantitiesofcontaminatedwaterwithnitrogeninbiologicalprobleminthere-pairoftheorganismwithnitrogenpollutionintheaquifer.[Keywords] isotopicidentification;sewage;nitrogenremovalwithorganism82                                    2003 

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