NO3与NO2对反硝化除磷性能的影响研究王伟

NO-3NO-2王伟,徐继润,朱波,丁仕强　(,116622)　硝酸盐和亚硝酸盐反硝化的对比试验研究结果表明:以硝酸盐为电子受体的反硝化污泥的驯化速率要快于以亚硝酸为电子受体的反硝化污泥驯化速率,无论是以硝酸盐还是亚硝酸盐作为电子受体,缺氧吸磷量均与厌氧释磷量正相关关系,厌氧释磷速率VNO-3∶VNO-2=1∶1.3860;缺氧吸磷速率VNO-3∶VNO-2=1∶1.0278。反硝化聚磷过程中电子受体的消耗量和磷酸盐的吸收量之间呈线性相关。以NO-2为电子受体的反硝化除磷速率是NO-3为电子受体的2.7倍。　硝酸盐;亚硝酸盐;反硝化;除磷速率　S132　　　A　　　1004-8421(2010)34-19444-02StudyontheEffectofNO-3andNO-2ontheDe-nitrificationPhosphorusRemovalWANGWeietal　(CollegeofEnvironmentalandChemicalEngineering,DalianUniversity,Dalian,Liaoning116622)Abstract　Acontrastexperimentalstudyofthede-nitrificationphosphorsremovalofnitrateandnitritewasdoneinthispaper.Theresultsshowedthatthecultivationrateofdenitrifyingsludgewsingnitrateaselectronaccepforwassuperiortothatusingnitriteastlecfroncceptor.Theexperi-mentsalsoindicatedthatthehigherthereleaseofanaerobicphosphorus,thehighertheuptakeofanoxicphosphoruswhethernitrateornitritewasused.ThereleaserateofanaerobicphosphoruswasVNO-3∶VNO-2=1∶1.3860andtheuptakerateofanoxicphosphoruswasVNO-3∶VNO-2=1∶1.0278.Therewasalinearrelationshipbefweentheconsumptionofelectronacceptorandtheabsorptionofphosphateintheprocessofdenitrificationphosphorusremoval.Inaddition,therateofdenitrificationphosphorusremovalusingNO-2aselectronacceptorwas2.7timesasmuchasthatu-singNO-3aselectronacceptor.Keywords　Nitrate;Nitrite;Denitrifying;Ratioofphosphorusremoval　王伟(1987-),男,辽宁大连人,硕士研究生,从事水处理方面研究,E-mail:[e-mail]。　2010-08-31　　,,NO-3-N,[1-2]。NO-2-N[3],NO-3-N[4],Meinhold[5]NO-2-N。,NO-2-NNO-3-N,。1　1.1　　1,PVC,1#、2#,1,,;、、;,13～20℃。1.2　　1#、2#。,(2.0h)、(2.0h)(1.5h)3。1.3　　,NaAc、KH2PO4、(NH4)2SO4Ca、Mg,COD200mg/L,TP10mg/L,,NO-3-N,NO-2-NN-(1-)-2。2　2.1　　2,、,:1.;2.;3.;4.1#;5.2#;6.;7.;8.;9.;10.;11.。Note:1.Influent;2.Regulatingtank;3.Rotameter;4.1#reactor;5.2#reactor;6.Submersiblemixer;7.Boosterpump;8.Airmachine;9.Secondarysedimentationtank;10.Effluent;11.Sludgedis-charge.1　Fig.1　Flowchartofexperimentalapparatus2　Fig.2　Phosphorusremovalpropertiesofdifferentelectronacceptor61%～77%、52%～79%。,1#2#,,　高晓余　　卢瑶,JournalofAnhuiAgri.Sci.2010,38(34):19444-19445,()。,,。2.2　　3,,:,。PHB,,。2#,,,NO-2。3　Fig.3　Relationbetweenanaerobicphosphorusandanoxicphos-phorus4　Fig.4　Relationbetweentheconsumptionofelectronacceptorandtheabsorptionofphosphate2.3　　,(4)。xyy=2.6883x-1.4451,1mg/L1.2432mg/L。:y=2.0197x+1.3856,R2=0.9721。,NO-3、NO-22,,,NO-2NO-32.7。5　Fig.5　Changesofphosphateconcentrationsinanaerobicandanoxiccycle2.4.2　25。,60minCOD。60min,,,VFA。,VNO-3=0.2606mg/(L·min),VNO-3=0.2882mg/(L·min),VNO-2=0.3612mg/(L·min),VNO-2=0.2962mg/(L·min),VNO-3∶VNO-2=1∶1.3860,VNO-3∶VNO-2=1∶1.0278。3　,,,。,NO-2NO-32.7。,NO-2NO-3,VNO-3∶VNO-2=1∶1.3860,VNO-3∶VNO-2=1∶1.0278。[1]SIDATM,BUXF,KASANHC.Poly-phosphateaccumulationbybacteriaisolatedfromactivatedsludge[J].WaterSA,1995,21(2):175-179.[2]DRYSDATEGD,KASANHC,BUXF.Denitrificationbyheterotrophicbacteriaduringactivatedsludgetreatment[J].WaterSA,1999,25(2):357-362.[3]KEREN-JESPERSENJP,HENZEM.Biologicalphosphorusuptakeunderanoxicandaerobicconditions[J].WatRes,1993,27(4):617-624.[4]MINOT,VANLOOSDECHTMCM,HEIJNENJJ.Microbiologyandbio-chemistryoftheenhancedbiologicalphosphateremovalprocess[J].WatRes,1998,32(11):3193-3207.[5]MEINHOLDJ,AMOLDE,ISAACSS.Effectofnitrateonanoxicphosphateuptakeinboil-ogicalphosphorusremovalactivatedslud-ge[J].WatRes,1999,33(8):1871-1883.1944538卷34期　　　　　　　　　　　　　　　　王伟等　NO-3与NO-2对反硝化除磷性能的影响研究