侧向流曝气生物滤池的同步硝化反硝化研究张红晶

张红晶1,　龙腾锐2,　何　强2,　曹艳晓2(1.重庆大学化学化工学院,重庆400044;2.重庆大学城市建设与环境工程学院,重庆400045)　　　:　利用自行研制的侧向流曝气生物滤池处理城市生活污水,考察了同步硝化反硝化现象。试验结果表明,在水力负荷分别为0.43、0.61m3/(m2h)以及气水比为10∶1、进水COD负荷为0.395～2.523kg/(m3d)、NH3-N负荷为0.082～0.486kg/(m3d)、TN负荷为0.047～0.587kg/(m3d)的条件下,对氨氮的去除率分别为78.91%和53.33%,对总氮的去除率分别为52.58%和36.85%。对滤池内含氮化合物的空间分布、氧摄取速率以及底物转化速率和微生物数量的监测结果表明,滤池内发生了同步硝化反硝化。　　:　侧向流曝气生物滤池;　同步硝化反硝化;　氧摄取速率;　氮化合物空间分布:X703.1　　:A　　:1000-4602(2006)09-0034-04StudyonSmiultaneousNitrificationandDenitrificationinLateralFlowBiologicalAeratedFilterZHANGHong-jing1,　LONGTeng-rui2,　HEQiang2,　CAOYan-xiao2(1.CollegeofChemistryandChemicalEngineering,ChongqingUniversity,Chongqing400044,China;2.FacultyofUrbanConstructionandEnvironmentalEngineering,Chong-qingUniversity,Chongqing400045,China)　　Abstract:　LateralFlowBiologicalAeratedFilter(LBAF)isanewtypeofequipmentforwastewatertreatment.SimultaneousnitrificationanddenitrificationwasinvestigatedbyusingLBAFtotreatmunicipalwastewater.Theresultsshowthatundertheconditionsofhydraulicloadingof0.43m3/(m2h)and0.61m3/(m2h),air/waterratioof10∶1,influentCODloadingof0.395-2.523kg/(m3d),NH3-Nloadingof0.082-0.486kg/(m3d),andTNloadingof0.047-0.587kg/(m3d),theNH3-Nremovalefficienciesare78.91%and53.33%,respectively,andTNremovalefficienciesare52.58%and36.85%,respectively.Furthermore,theprofilesofinorganicnitrogencompounds,OUR,thesubstratetransformrateandthemicrobialpopulationwerestudied.ItisbelievedthatthesimultaneousnitrificationanddenitrificationhastakenplaceinLBAF.　　Keywords:　lateralflowbiologicalaeratedfilter;　simultaneousnitrificationanddenitrification;OUR;　profilesofnitrogencompounds　　:(NGGP)　　,,[1],,,,。,,34第22卷　第9期2006年5月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vo.l22No.9May2006(),A/O、A2/O。,,,、SBR、,(SND)。[2]:、;,,pH。,。(LBAF),、,LBAF。1　试验设备与方法1.1　LBAF1。1　LBAFFig.1　SchematicdiagramofLBAFLBAF2.28m,0.70m,1.00m,A、B。A510～15mm,1,,,,。B28cm1,3～6mm,,。:、、、、。28cm,、、。:、;,;,;,。1.2　,,。:SS75～220mg/L,COD103～596mg/L,TN40.3～100.6mg/L,NH3-N34.7～86.3mg/L,pH6.5～7.5,NO-3-N0～0.36mg/L。0.43m3/(m2h)0.61m3/(m2h),10∶1,20.5～28.5℃,COD、、、、,。(OUR)[3],MPN[4],[5]。2　试验结果与分析2.1　2、3LBAF。2　LBAFFig.2　TNremovalbyLBAF3　LBAFFig.3　AmmonianitrogenremovalbyLBAF35第9期张红晶,等:侧向流曝气生物滤池的同步硝化反硝化研究第22卷2、3,0.43、0.61m3/(m2h)COD0.395～2.523kg/(m3d)、NH3-N0.082～0.486kg/(m3d)、TN0.047～0.587kg/(m3d),LBAF78.91%53.33%,52.58%36.85%。,HRT,,,,。,,,,。2.2　2.2.1　,,2.1m,,,,。DO,,,DO,,,,。。,1mol1mol,1mol1mol。0.43、0.61m3/(m2h),40.49mg/L23.41mg/L,17.36mg/L12.94mg/L,,。:,,,,;,,。2.2.2　,,。,3dCODNH3-N,4。4　OURCOD、NH3-NFig.4　VariationofOURandCOD,NH3-NtransformrateinLBAF4,COD,NH3-N,OUR。AB,,COD,OUR,,,NH3-N,OUR。(1),,,,LBAF。1　、、Tab.1　Variationofnumberofnitrobacteria,nitrosobacteriaanddenitrifyingbacteriainLBAF104cm-3L=2.38mL=2.94mL=3.50m1.27.2251253200276.81.42.3　①　,LBAFCOD,COD0.5kg/(m3d)70%;COD0.5kg/(m3d),40%～70%。LBAFCOD,COD36第9期　　　　　　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　　　　　　　第22卷,,。COD,,LBAF,LBAF,COD。②　NH3-NNH3-NTN5、6。5　Fig.5　InfluenceofNH3-NvolumetricloadonNH3-Nremovalrate6　Fig.6　InfluenceofNH3-NvolumetricloadonTNremovalrate5、6,LBAF,。,,。3　结论①　0.43、0.61m3/(m2h)10∶1、COD0.395～2.523kg/(m3d)、NH3-N0.082～0.486kg/(m3d)、TN0.047～0.587kg/(m3d),78.91%53.33%,52.58%36.85%。②　、,。③　,。:[1]　.(3)[M].:,1996.[2]CollvignarelliC,BertanzaG.Simultaneousnitrificationdenitrificationprocessinactivatedsludgeplant:perform-anceandapplicability[J].WaterSciTechnol,1999,40(4-5):187-194.[3]　UrferD,HuckPM.Measurementofbiomassactivityindrinkingwaterbiofiltersusingarespirometricmethod[J].WaterSciTechnol,2001,35(6):1469-1477.[4]　,.[M].:,2002.[5]　.(4)[M].:,2002.:(1967-　),　,　,　、,　。:[phone]E-mail:[e-mail]:2006-02-08,37第9期张红晶,等:侧向流曝气生物滤池的同步硝化反硝化研究第22卷