低浓度的NO3N对厌氧系统的影响研究陈前

NO-3-N＊　,,(南通职业技术学院,江苏　南通　226007)　:,;VFA,,,。。,。:;;;StudyonRapidStart-upConditionsofAnaerobicSystem＊CHENQian,YANGChun-he,JINJie-rong(NantongAgriculturalVocationalCollege,JiangsuNantong226007,China)Abstract:Whenanaerobicbiodegradationoforganicwastewatercontaininglowconcentrationsofnitratewasoc-curred,theammonificationwasoccurredfirstly.Asvolatilefattyacids(VFA)producedbyhydrolyticacidification,deni-trificationplayedtheroleofthemainmechanismstepbystep.Inthenitratetransformationprocess,denitrificationhadmoreimpactontheremovalrateofanaerobicsystem.Theefficiencywasaffectedthroughoutthewholeprocess.Evenlowconcentrationsofnitrate,itmaystillhaveanimpactontheanaerobicsystem.Keywords:anaerobicsystem;organicwastewater;ammonification;denitrification　　　　　　　　　　　　　＊:“”(:DE2009006)。:(1977-),,,,,-、。E-mail:[e-mail],。[1]UASB,,()。,[2],NO-3-N,NO-3-N。。“”,,,,。1　1.1　[3]COD:;pH:pHS-3BpH;TN:;NH3-N:;NO3-N:;TP:;T:。1.2　　　:1　USAB,。,。,。20mg/L。、、UASB、。2　2.1　8250mL。50mL50mL,250mL,COD5500mg/L,C：P=200：1,pH7。·138·201038910mg/L,1#～8#。36h。pH,。,COD2。2　COD2,。(),。,。2,,COD。COD。2.2　5250mL,100mL,。COD3600mg/L。pH7,C：P=200：1。,1#～5#。36h。,。CODpH3。3　CODpH3,,pH,。CODpH,,,。。COD,。12,1,2。2,VFA。VFA。[4-6]VFA。2.3　。,。。17mg/L,,COD,pH。4　pH4,pH7,,pH7.2。,。。5。5　5,,:,,。,。,;,,。6　COD6,6500mg/L,,COD,37.7%。COD,COD,:COD,44.1%41.5%。,,COD,。,4pH:pH6.97.2,COD,。,,,COD,,,COD。、,C：N：P=·139·2010389200：5：1,:COD。,。。。,。,。3　　,,,,。。VFA,,。,,COD。,,。[1]　,,,.UASB[J].,2006,24(2):3-7.[2]　,,,.[J].,2008,24(6):15-19.[3]　.()[M].:,2002.[4]　WildererPA,JonesWL,DauU.Competionindenitrificationsystemsaffectingreductionrateandaccumulationofnitrite[J].WatRes,1987,21:239-245.[5]　AkunnaJC,BizeauC,MolettaR.Nitrateandnitritereductionwithan-aerobicsludgeusingvariouscarbonsoures:glucose,glycerol,aceticacid,lacticacid,andmethano[J],WatRes,1993,27:1303-1312.[6]　AkunnaJC,MolettaR.Nitratereluctionbyanaerobicsludgeusingglu-coseatvariousnitrateconcentrations:ammonification,denitrificationandmethanogenicactivities[J].EnvironTechnol,1994,15:41-49.(上接第112页)　　3,pH1.0～2.0,pH,;pH2.0～3.5,。1、2,pH,,。pH1.0～2.0,,,pH2.0～3.5,,,pH2.0。2.4　1.2.5,pH2.0。1.5g,501,20℃,24h。30℃、40℃、50℃、60℃、70℃,(1),(2)、(3),4、5。4　D2905　D290　　4、5:20℃～50℃,,,20℃～50℃D290,,。,,50℃,1.16mmol/g,,,,。,60℃50,70℃2,,,。3　　,,201×7,D290,1.16mmol/g0.45mmol/g。50℃、pH=2.0,D290120,。[1]　.[J].,2002,21(4):175-183.[2]　,.[J].,2000(6):290-292.[3]　,.[J].,2000(3):118-119.[4]　,,.()[M].:,1998:220-226.[5]　.[M].:,2005:130-131.·140·2010389