改进型生物接触氧化反应器内实现短程脱氮的实验研究荣中原

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29420088         JournalofNorthChinaInstituteofWaterConservancyandHydroelectricPowerVol.29No.4Aug.2008:2008-04-30:A(05L024).:(1981—),,,,.:1002-5634(2008)04-0091-03荣中原,朱 波,徐继润(大连大学环境与化学工程学院,辽宁大连116622) :,,,,.:(20~25℃),(pH=8),(C/N=3),(M(DO)=1.0~1.5mg/L),,70%~84%,80%,.:;;:X703   :B  ,,,,.2().[1-2],25%40%,63%30%~40%..,,,.(FA)、(DO)、、pH、,.[3-4],[5],.,,.1 1.1 .,,,,.1,PVC4,150mm,800mm,200mm.2(2),2,,..、、,.(15~25℃).1.2 ,DOI:10.19760/j.ncwu.zk.2008.04.029,1.(NH4)2SO4,;350mg/L.1 1 /(mg·L-1)/(mg·L-1)KH2PO420.0MgSO4·7H2O40.0CaCl240.0FeCl31.3EDTA1500.0H3BO4140.0ZnSO4·7H2O15.0MnCl2·7H20990.0CuSO4·5H2O250.0NH4MoO4·H2O220.0NiCl2199.01.3 ,MLSS4000~5000mg/L,.560L/d,12h.1120L/d560L/d.1.5~2.0mg/L,pH7.5.2:25d,NH+4—N70mg/L;20d,NH+4—N120mg/L.,.1.4 COD,NH+4—N,NO-2—N,NO-3—N,TN,[6],pHPHS-2C,DO,.2 2.1 45dNH+4—N120mg/L,C/N3,DO1.0~1.5mg/L,pH8.0,22~25℃,25d(70),,2—5.  23,30d,84%,65%,(=()/)70%~84%;16.0~19.5mg/L,3.5~6.3mg/L,23.0mg/L,.45,1,92                    20088,80%95%.CODNOX—N2.56±0.4,3.7~6.6[7],C/N.2.2 DODO.,DO,6.    6 DO6,,,;DO1.36mg/L,();DO2.26mg/L;DO0.8~1.5mg/L,.3  1.,;DO1.0~1.5mg/L,C/N3,pH8,22~25℃,70%~84%,84%,65%;,.2.DO.DO0.8~1.5mg/L,,,80%.   [1]BaeW,ChungJW.Ashortcutbiologicalnitrogenremovalinabiofilmreactorbysuppressingnitriteoxidation[J].J.Biodegradation,2002,10:349-356.[2]TurkO,MavinicDS.Maintainingnitritebuild-upinasys-temacclimatedtofreeammonia[J].J.WaterRes.,1989,23(11):1383-1388.[3],,,.A/O()[J].,2006,26(5):703-709.[4]TurkOMavinicDS.Stabilityofnitritebuild-upinanacti-vatedsludgesystem[J].J.Wat.Pollut.ControlFed.,1989,61:1440-1448.[5].[J].,2005,31(3):167-168.[6].[M].:,1989.[7]TamNFY,WongYS,LeungG.Effectofexogenouscar-bonsourcesonremovalofinorganicnutrientbythenitrifi-cationdenitrificationprocess[J].J.WaterRes.,1992,26:1229-1236.ExperimentalStudyonRealizingtheShortcutDenitrificationinanImprovedBiologicalContactOxidationReactorRONGZhong-yuan,ZHUBo,XUJi-run(CollegeofEnvironmentalandChemicalEngineering,DalianUniversity,Dalian116622,China)Abstract:Accordingtotheshortcutdenitrificationtheoryandtheoperationalcharacteristicsofbiologicalcontactoxidation(BCO),someimprovementsinbothconstructureandfluidconditionaremadeinatraditionalBCOreactor,andthenthefeasibilityandperform-anceparametersofshortcutdenitrificationareexaminatedexperimentallyontheimprovedreactoratnormaltemperatureforanartificialwastewater.Theresultsshowthatattemperatureof20~25℃,pH=8,C/N=3,shortcutdenitrificationcouldberealizedsatisfactorilybycontrollingtheconcentrationDOat1.0~1.5mg/L.Atthattimetheaccumulationrateofnitriteisto70%~84%,andthetransformrateofamino-nitrogenisabove80%.TheexperimentsconfirmthattheshortcutdenitrificationinanimprovedBCOreactorispractica-ble,thefeaturesandadvantagesofthetwoprocessesarecompatible.Keywords:improvedbiologicalcontactoxidationreactor;shortcutdenitrification;nitriteaccumulation93294:         

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