OGO工艺处理城市污水脱氮效果及机理初探罗固源

第30卷第6期重庆大学学报(自然科学版)Vo.l30　No.6　2007年6月JournalofChongqingUniversity(NɑturɑlScienceEdition)Jun.2007　　　:1000-582X(2007)06-0125-04OGO:2007-02-09。:(50378095)。:(1944-),,,,(Tel)023-66771243;(E-mail)[e-mail]。罗固源,吴姝媛,许晓毅,季铁军,唐　刚(重庆大学三峡库区生态环境教育部重点实验室,重庆400030)　:采用改良而成的OGO工艺技术,以试验配水模拟城市生活污水,研究了OGO系统的脱氮效果,通过分析反应器各反应区的脱氮效果,并结合OGO系统脱氮效果观察系统中活性污泥絮体特性,研究分析了OGO系统的脱氮机理。试验结果表明,在进水总氮(TN)和氨氮(NH4+-N)分别为31.15～42.26mg/L和27.53～38.58mg/L的条件下,OGO系统对总氮和氨氮的平均去除率分别可达74.31%和83.75%。反应器外环脱氮方式为同时硝化反硝化(SND)脱氮,其脱氮量占反应器脱氮总量的80.48%,OGO工艺对氮素的生物去除绝大部分是通过同时硝化反硝化来实现的;同时硝化反硝化的宏观分区理论和微环境理论均适用于OGO系统。:OGO工艺;脱氮效果;同时硝化反硝化;SND机理　　:X703.1:A　　OCOOGO[1],。1　试验装置及方法1.1　试验装置1。,145L,、()1∶3.2∶4.6,40cm。,、、,;。1.2　试验水质及分析测试方法:NaH2PO4、NH4Cl、、。1。《》()[2]。1　mg/LCODPO43--PTPNH4+-NTNpH250～4503.5～5.84～627～3830～426.8～7.23504.85.0323571.;2.;3.;4.;5.;A.;B.;C.;D.;E.1　OGO1.3　试验研究方法:10h,70%,(SRT)18～20d,0.3kgCOD/(kgMLSSd),MLSS3000mg/L,DO2.0mg/L。18～28℃,17～26℃。1)OGO,,。2)、35mg/L、32mg/L,,。3),,[3],,。1/2(20cm)。2　脱氮效果分析2.1　OGO工艺脱氮效果2、3.2　OGO3　OGO2-3,OGO31.15～42.26mg/L27.53～38.58mg/L,5.33～12.96mg/L2.29～8.68mg/L,74.31%83.75%,。2.2　外环脱氮效果OGO、C-(1),,OGO,。4.4:,12.66mg/L15.86mg/L,3.20mg/L,。,。4　OGO、、1/2,OGO(DO)。2,,、DO。32,,,C-。,,0.1～0.8mg/L。5　OGO,,DO,(SND)[4]。,SND。3　反应器各反应区对OGO系统脱氮效果的分析3.1　厌氧区4,、,,。、2-32126重庆大学学报(自然科学版)　　　　　　　　　　　　　　　　　　　第30卷OGOTN:TNOGOTN18.32%,-TNTN1/5.2　OGODO、、mg/LDOTNNH4+-NNO-3N32.64～35.9730.25～32.8901　　0.1～0.219.04～21.8518.86～20.770～0.92234567890.9～1.10.4～0.60.2～0.51.2～1.41.6～2.01.8～2.21.4～1.68.92～10.179.46～11.438.92～10.218.90～10.088.95～10.108.96～10.128.97～10.118.95～10.146.73～7.567.22～8.656.80～7.616.82～7.636.79～7.606.80～7.596.32～7.256.07～6.922.11～2.882.07～2.782.09～2.882.07～2.872.12～2.982.15～3.092.41～3.582.78～3.868.90～10.106.07～6.922.75～3.812:a.(6),4mg/L,,;b.1h,,。OGO,[5],。6　OGO6OGO。6,,1.58×10-2～4.15×10-2kgTN/(kgSSd),3.07×102kgTN/(kgSSd);,1.79×102KgTN/(kgSSd)1.96×102kgTN/(KgSSd)。,,,。6,,,,,,。3.2　外环、2-32OGOTN:TNOGOTN80.48%,TNTN4/5,,OGO,。4　活性污泥絮体特性与脱氮效果试验研究,、、,,、。,OGO,,,40～200μm,70～180μm,7(a)。,,,,7(b),,15%,3～7d,。,150μm,。K.Pochana[6-7],40μm80μm,SND21%127第6期　　　　　　　　　　　罗固源,等:　OGO工艺处理城市污水脱氮效果及机理初探52%。,OGOSND。OGO220,3。3　OGO/mgL-1/mgL-1/%/mgL-1/mgL-1/%TN35.969.3274.0835.0811.2867.84NH4+-N32.255.3583.4131.345.0583.89NO3--N03.8906.12CODCr3691097.293631196.977　OGO(:10×10)3,,OGO6.24%,COD、。,OGO,。[8-9],(DO),,,OGOSND。5　结　论1)OGO,31.15～42.26mg/L27.53～38.58mg/L,OGO74.31%,83.75%。2)DO,(SND)。SND。　　3)OGO,1/5,4/5,。。4),OGOSND,SND。:[1]　,,,.OGO[J].,2006,22(3):69-72.[2]　.[M].4.:,2006.[3]　.[J].,1997,17(1):60-67.[4]　,,.[J].,2001,14(1):33-35.[5]　HAOX,DODDEMAHJ,JWVANGROENESTIJIN.UseofContactTanktoEnhanceDenitrificationinOxidationDit-ches[J].WaterSciTechnol,1996,34,(1-2):195-202.[6]　KLANGGDUENPOCHANA,JURGKELLER.Studyoffac-torsaffectingSimultaneousNitrificationandDenitrification(SND)[J].WaterSciTechnol,1999,39(6):61-68.[7]　POCHANAOK,KELLERJ,LANTJ.Modeldevelopmentforsimultaneousnitrificationanddenitrification[J].WaterSciTechnol,1999,39(1):235-243.[8]　PUZNAVAN,PAYRAUDEAUM,THORNBERGD.Simul-taneousnitrificationanddenitrificationinbiofilterswithreal-timeaerationcontrol[J].WaterSciTechnol,2000,43(1):269-276.[9]　,,.[J].,2004,23(3):29-31.(136)128重庆大学学报(自然科学版)　　　　　　　　　　　　　　　　　　　第30卷:[1]　,.[J].:,2004,27(6):104-106.[2]　,.1-[J].:,2004,27(9):64-66.[3]　.1-[J].,1987,1:99-104.[4]　.1-[J].,1984,5A(1):91-98.[5]　.[J].,1984,5A(6):733-737.[6]　DANCER,NUSSBAUMEN,STUARTRD,eta.lQuasinor-malconesinBanchspaces[J].NonlinearAnalAppl1983,7:539-553.[7]　,.K-[J].,1992,12(2):207-212.PositiveFixedPointsforUpperSemicontinuousSet-valued1-set-contractiveMappingWEIShu-guang,WANGKai-rong,HEGuang-hui,ZHANGMou(CollageofMathematicsandPhysics,ChongqingUniversity,Chongqing400030,China)Abstract:Usingtopologicaldegreeforuppersemicontinuousset-valued1-set-contractivemappingandthefixedpointtheoremsforuppersemicontinuousset-valued1-set-contractivemapping,theboundaryconditionsofexistingpositivefixedpointsisstudiedforuppersemicontinuousset-valued1-set-contractivemapping.Infact,itisanaturalconclusionintheconeforthefixedpointtheoremsofuppersemicontinuousset-valued1-set-contractivemapping,anditisanaturalex-tendforpositivefixedpointtheoremsofsingle-valued1-set-contractivemapping.Keywords:set-valued1-set-contractivemapping;positivefixedpoint;cone;Banachspace;uppersemicontinuity;demi-compact(编辑　吕建斌)(128)EffectandMechanismofNitrogenRemovalofOGOProcessinMunicipalWastewaterTreatmentLUOGu-yuan,WUShu-yuan,XUXiao-yi,JITie-jun,TANGGang(KeyLaboratoryofThreeGorgesReservoirRegion’sEco-EnvironmentUndertheStateMinistryofEducation,ChongqingUniversity,Chongqing400030,China)Abstract:NitrogenremovalefficiencyintheOGOreactorwasstudiedbasedtheimprovedOGOreactor,andthetestwa-terwassimulatedmunicipalwastewater,furtherstudyhasbeendonetoanalyzethenitrogenremovalmechanismoftheOGOsystemthroughanalyzingthenitrogenremovaleffectineachpartoftheOGOreactorandobservingtheactivatedsludgecharacteristicinthereactor.Wheninfluenttotalnitrogen(TN)andammonianitrogen(NH4+-N)are31.15～42.26mg/Land27.53～38.58mg/Lrespectively,theaverageremovalefficienciesofTN,NH4+-Nachieve74.31%and83.75%.Thenitrogenremova