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54 10 Vol.54 №10 200310 Journal of Chemical Industry and Engineering (China) October 2003李勇智(,150001)彭永臻 王淑滢(,100022) X703 A 0438-1157(2003)10-1482-04NITROGENREMOVALFROMHIGHAMMONIAPHARMACEUTICALWASTEWATERviaNITRITELIYongzhi(CollegeofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150001,Heilongjiang,China)PENGYongzhenandWANGShuying(CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100022,China)Abstract Inthisstudy,laboratory-scaleexperimentswereconductedbyusingSequencingBatchReactor(SBR)activatedsludgeprocesstotreatwastewaterstreamfromapharmaceuticalfactory.Biologicalnitrogenremovalcanbeachievedviapartialnitrificationanddenitrificationanditsefficiencywasabove99%at23℃±1℃.Theexperimentalresultsindicatedthatthenitriteoxidizersweremoresensitivethanammoniaoxidizerstothefreeammoniainwastewater.TheammoniawasoxidizedatpH7and7.5respectively,whichsuggestedacriticalfreeammoniaconcentrationof0.2mg·L-1atwhichthenitriteoxidizerswereinhibited.Keywords partialnitrificationanddenitrification,pharmaceuticalmanufacturingwastewater,biologicalnitrogenremoval,freeammonia(FA),on-linecontrol 2003-04-10,2003-07-07.:,,32,.:(No.50138010). 引 言,,.,25%,40%,,[1～5].,[6].、、pH, Receiveddate:2003-04-10.Correspondingauthor:LIYongzhi,PhDcandidate.E-mail:gislyz@sohu.comFoundationitem:supportedbytheNationalNaturalScienceFoundationofChina(No.50138010). (SBR).,、、、5.、pH、,SBR,,[7].1 实验材料与方法1.1 ,、,pH、.(COD)、5(BOD5)、(NH+4N)、(TN)、(TP):250～500mg·L-1、130～280mg·L-1、80～200mg·L-1、90～240mg·L-1、1～2mg·L-1,(CaCO3)800～1400mg·L-1,pH8.8～9.6.1.2 1.SBR,70cm,30cm,,15L.,,.Fig.1 SBRexperimentandcontrolsystem1—mixer;2—outlet;3—diffuser;4—wastesludge;5—dataacquisitionsystem SBR:,、,,、.,、、、COD(DO)、(O-RP)pH.HClNaHCO3pH.1.3 COD5B-2COD,NH+4-N,NO-2-NN-(1-),NO-3-N.DO、pHORPYSI、WTWHANA.(FA)(mgNH3-N·L-1)FA=1714[NH+4-N]×10pHe6344(273+t)+10pH2 结果与讨论2.1 5L,9L,9L,14L,64%.,,COD350mg·L-1.35,COD80%98%.,,COD,.25,98%.2.2 260,.1.1,,COD、100mg·L-1、1mg·L-1,80%99%.COD,.90%,,.Table1 ExperimentdataduringsteadyperformancetermCycleConcentrationofCODmg·L-1InfluentEffluentRemoverate%ConcentrationofNH+4-Nmg·L-1InfluentEffluentRemoverate%Nitriteratio%(NO-2-NNO-x-N)603605684.3800.3299.696.4684809280.81500.8899.493.2734207681.81200.6299.493.7843806682.61100.5199.592.9924007880.4900.4399.595.8·1483· 5410 :2.3 NH+4-N、NO-2-N、NO-3-N、(FA)COD,DO、ORPpH23.50.21mg·L-1,pH9.61,38.53mg·L-1.,1.39mg·L-1,42.7mg·L-1,(NO-2-NNO-x-N)96.8%.,.Fig.2 TrackstudyofSBRfornitrogenremovalvianitrite Fig.3 DO,pHandORPmonitedduringnitrogenremovalvianitriteinSBR 3,pH、ORP.,pH,.160min,pH,,.“”,.,ORP,310min,,.,ORP“”.2.4 pHSBR,(23℃±1℃),HClNaHCO3pH7.07.5,pH.pH7.5(4),0～120min,50.89mg·L-110.95mg·L-1,0.95mg·L-10.20mg·L-1.,,.120min,,,,,,.Fig.4 Effectoffreeammoniaonammoniaoxidization(pH=7.5) pH7.0(5),0～90min,0.30mg·L-10.20mg·L-1.,,.0.2mg·L-1,,.pH7.57.0,0.2mg·L-1,,,.·1484· 200310 Fig.5 Effectoffreeammoniaonammoniaoxidization(pH=7.0) 3 结 论、pH,23℃±1℃,,99%,.,pHORP,,.,0.2mg·L-1,,.References1 VanLoosdrechtMCM,JettenMSM.MicrobiologicalConversionsinNitrogenRemoval.WaterScienceandTechnology,1998,38(1):1—72 HellingaC,Schellen,MulderJW,vanLoosdrechtMCM,HeijnenJJ.TheSHARON-process:anInnovativeMethodforNitrogenRemovalfromAmmoniumRichWastewater.WaterScienceandTechnology,1998,37(9):135—1423 VanDongenU,JettenMSM,VanLoosdrechtMCM.TheSharon-AnammoxProcessforTreatmentofAmmoniumRichWastewater.WaterScienceandTechnology,2001,44(1):153—1604 AbelingU,SeyfriedCF.Anaerobic-aerobicTreatmentofHigh-strengthAmmoniaWastewater-NitrogenRemovalviaNitrite.WaterScienceandTechnology,1992,26(5-6):1007—10155 MauretM,PaulE,Puech-CostesE,Maurette,MT,BaptisteP.ApplicationofExperimentalResearchMethodologytotheStudyofNitrificationinMixedCulture.WaterScienceandTechnology,1996,34(1-2):245—2526 CecenF,GonencIE.NitrogenRemovalCharacteristicsofNitrificationandDenitrificationofChemicalProcessingWastewater.WaterScienceandTechnology,1994,29(10-11):409—4167 AndreottolaG,FoladoriP,RagazziM.On-lineControlofaSBRSystemforNitrogenRemovalfromIndustrialWastewater.WaterScienceandTechnology,2001,43(3):93—100·1485· 5410 :