反硝化除磷工艺研究邹华

　第26卷第2期2007年3月　　　　　　　食品与生物技术学报JournalofFoodScienceandBiotechnology　　　　　　Vol.26　No.1Mar.　2007　:1673-1689(2007)02-0071-05　　:2006-04-15.:(1972-),,,,.Email:[e-mail]反硝化除磷工艺研究邹华,　阮文权,　陈坚(江南大学工业生物技术教育部重点实验室,江苏无锡214122)　:研究了反硝化除磷工艺的运行效果。结果表明,此反硝化除磷工艺可以较好地进行除磷脱氮,但是磷的去除对进水氮的浓度有一定的要求。在进水COD400mg/L,总磷15mg/L,氨氮84mg/L的条件下COD的降低率可达96%以上,氮的去除率稳定在86%～88%,磷的去除率为92%～95%。进水氨氮质量浓度为60mg/L时,磷的去除率为78%,在进水氨氮质量浓度降为44mg/L时磷的去除率降为68%。反硝化除磷比以氧为电子受体的生物除磷可减少耗氧55.5%,剩余污泥的产生量可减少53%,温室气体CO2的产生量可减少体积分数21.4%。:废水处理;强化生物除磷(EBPR);反硝化除磷;除磷脱氮:X703:AStudyofDenitrifyingDephosphatationProcessZOUHua,　RUANWen-quan,　CHENJian(KeyLaboratoryofIndustrialBiotechnology,MinistryofEducation,SouthenYangtzeUniversity,Wuxi214122,China)Abstract:Adenitrifyingdephosphatationprocesswasoperatedinthisstudy.Theresultsshowedthatthedenitrifyingdephosphatationprocesscouldremovephosphorusandnitrogensuccessfullyatanadequateconcentrationofnitrogenininflow.Above96%CODwasremovedwhentheinflowCOD,totalphosphorus(TP)andammonianitrogen(NH3-N)were400mg/L,15mg/Land84mg/Lrespectively,86%～88%nitrogenand92%～95%phosphoruswasremovedsimultaneously.ButwhentheinflowNH3-Nwas60mg/L,78%phosphoruswasremoved,oncetheinflowNH3-Ndroppedto44mg/L,only68%phosphoruswasremovedinthesystem.Inthesystemusednitrateaselectronacceptor,theoxygenconsumptionwas55.5%lessthanthesystemthatoxygenwasusedaselectronacceptor.ThesludgeandCO2productionwas53%and21.4%less,respectively.Keywords:wastewatertreatment;EnhancedBiologicalPhosphorusRemoval(EBPR);denitrifyingdephosphatation;phosphorusandnitrogenremoval　　,,。(EBPR),“”(:),(PHA),[1]。(:),。,,。,[2-3],。,“”,[4]。,(COD),,CO2[5-6]。,/、CO2。1　实验装置和方法1.1　、1#、、2#、3#,1。,3.65L,5.12L,2.1L。1.4L/h,2.5h,4h。1　Fig.1　Theexperimentalsystemsketchmap1.2　1.2.1　实验用水　,[1-3]:COD400mg/L;PO43--P15mg/L;pH7.0;。1.2.2　接种污泥　。MLSS4.0mg/L。1.3　(163d)。2:1()78d:。COD400mg/L,15mg/L,84mg/L。2()85d:。COD,60mg/L,44mg/L,90mg/L,84mg/L。10d。1.4　COD:5B—1COD;NO3-N:[7];TP:[7];NH4+-N:[7];MLVSS:[7];MLSS:[7];SV:30min;SVI:SV30m。2　结果与讨论2.1　2.1.1　启动阶段　,。,。,,。。,、MLSS,。　　。2、34。COD、、60d、。COD,96%。51%92%～95%。53%,60d86%～88%。,60d,COD,90%。72食　品　与　生　物　技　术　学　报　　　　　　　　　　　　第26卷　2　CODFig.2　TheremovalofCOD3　Fig.3　Theremovaloftotalphosphate2.1.2　运行阶段　5～7160mg/L,44mg/L,90mg/L,84mg/L。,COD4　Fig.4　Theremovalofnitrogen,96%～98%,,83%～89%。。60mg/L,45%,78%;44mg/L,30%,68%;90mg/L,80%,94%。COD。,(NO3-)。,,。5　CODFig.5　TheremovalofCOD6　Fig.6　Theremovaloftotalphosphate73　第2期7　Fig.7　Theremovalofnitrogen1　Tab.1　COD,phosphorus,nitrogen,MLSSconcentrationandSVIindifferentpartofdenitrifyingdephos-phatationsystem/(mg/L)()/%102COD38535.68997.7TP14.267.565.33.575.460.656.806.288.01.1052.01.1MLSS/3.653.433.78/SVI/72.584.574.6/130COD39739.817.51596.2TP14.282.673.64.667.644.945.805.1288.60043.60MLSS/4.014.564.02/SVI/44.265.345.6/145COD40040.210997.8TP13.589.386.90.894.189.883.5012.085.32.3079.61.2MLSS/3.984.453.98/SVI/50.664.750.8/161COD40036.578.397.9TP14.289.888.2193.084.480.2010.387.80077.90MLSS/4.014.433.97/SVI/56.865.756.6/2.2　/Smolders,0.04mol0.55molO2,0.34mol,0.59molCO2[8]。Kuba,,0.04mol0.58mol,,0.16mol,0.75molCO2[9]。2.2.1　耗氧量的比较(1):1mg14.20mg,1mg6.55mg,。(2)::NO2-,NO2-NO3-。:55NH+4+76O2+109HCO-C5H7O2N+54NO-2+57H2O+104H2CO3(1)400NO-2+NH+4+4H2CO3+HCO-3+195O2C5H7O2N+3H2O+400NO-3(2)(1)(2)NH+4+1.86O2+1.98HCO-3(0.0181+0.0025)C5H7O2N+1.04H2O+0.98NO-3+1.88H2CO3(3)　　(1),1mgNH4+-NNO2--N,3.16mgO2。(2),1mgNO2--NNO3--N,1.11mgO2。1mgNH4+-NNO3-N,4.27mg()。,,1LCOD400mg/L,4074食　品　与　生　物　技　术　学　报　　　　　　　　　　　　第26卷　mg/L,15mg/L:,170.8mg,213mg,383.8mg;,170.8mg。15mg213mg,1g55.5%。2.2.2　污泥产生量的比较　CH2.09O0.54N0.20P0.015,26g/mol。0.04mol0.34mol,1g7.13g;0.04mol0.16mol,1g3.35g。1g3.78g,53%。2.2.3　CO2产生量的比较　0.04mol0.59molCO2,1gCO220.9g;0.04mol0.75molCO2,1gCO226.6g。1gCO25.7g,CO221.4%。3　结　论,。COD400mg/L,15mg/L,84mg/LCOD96%,86%～88%,92%～95%。60mg/L,78%;44mg/L,68%。,55.5%,53%,CO221.4%。:[1],,.COD[J].,2002,23(3):49-52.　　RUANWen-quan,ZOUHua,CHENJian.EffectoftheCODandTotalPhosphorusConcentrationonBiologicalPhos-phorusRemovalSuppliedwithAcetateasaSoleCarbonSource[J].ChineseJournalofEnviromentalScience,2002,23(3):49-52.(inChinese)[2]ZOUHua,DUGuo-Cheng,RUANWen-Quan,etal.Roleofnitrateinbiologicalphosphorusremovalinasequencingbatchreactor.WorldJournalofMicrobiologyandBiotechnology(Accepted).[3],,.[J].,2002,15(3):38-41.　　ZOUHua,RUANWen-quan,CHENJian.StudyofUsingNitrateasElectronAcceptorinBiologicalPhosphorusRemov-al[J].ResearchofEnvironmentalSciences,2002,15(3):38-41.(inChinese)[4],,.[J].,2002,21(1):10-14.　　ZOUHua,RUANWen-quan,CHENJian.TheRoleofNitrateintheRemovalofNitrogenandPhosphate[J].JournalofWuxiUniversityofLightIndustry,2002,21(1):10-14.[5],,.()[J].,1998,24(8):69-73.　　HAOXiao-di,LIUZhuang,LIUGuojun.PolicyandtechnologyofphosphoruscontrolandremovalinEurope(Ⅰ)[J].Water&WastewaterEngineering,1998,24(8):69-73.(inChinese)[6],,.()[J].,1998,24(9):68-71.　　HAOXiao-di,LIUZhuang,LIUGuo-jun.PolicyandtechnologyofphosphoruscontrolandremovalinEurope(Ⅱ)[J].Water&WastewaterEngineering,1998,24(9):68-71.[7].[M]..:,1989.[8]SmoldersGJF,VanderMeijJ,VanLoosdrechtMCM,etal.Stoichiometricmodeloftheaerobicmetabolismofthebio-logicalphosphor