常温下pH对短程硝化反硝化的影响傅金祥

20103262　()JournalofShenyangJianzhuUniversity(NaturalScience)　Mar.　2010Vol.26,No.2　　:2008-01-20:(20060692);(HJ-200603):(1955—),,,,,.:1671-2021(2010)02-0316-05pH傅金祥1,韩晋英1,齐建华2,韩汝佳1,徐岩岩1,王利平1(1.,110168;2.,105021)　:解决对短程硝化过程影响因素pH值研究不充分及短程硝化过程中氮的缺失的问题.在SBR反应器中用传统活性污泥作为种泥驯化污泥,以模拟生活污水为处理对象进行动态实验,考察pH值对系统短程硝化反硝化的影响及系统运行周期内总氮缺失原因.pH=8.5,6h的氨氮转化速率为8.9mg/(L·h),亚硝态氮积累率高达93%;亚硝酸盐氮积累率随反应时间逐渐降低,pH越低,下降越多,pH=7.1时,从2h的80%下降到6h的75%;进水pH值越高,反硝化2h时总氮的去除效率越高,pH=8.5时,系统总氮的降解速率达到5.6mg/(L·h);短程硝化过程中存在氮的缺失现象.进水pH越高,氨氮降解速率、亚硝态氮积累率和总氮去除率越高,系统周期中氮的缺失主要是同步硝化反硝化作用的结果.:;;pH;:TU991.2　　　:A　　　　　NO-3-N,NO-3-NN2TN.,,NO-2-N,NO-2-NN2,[1-7].,[7]:①25%,;②40%,C/NTN;③50%;④;⑤,.,、、;,(30～36℃)、pH(7.5).,[8-9].,,.,(23±1℃),pH,pH.pH,.1　1.1　,1,COD、、、、.1　mg·L-1ρ(COD)ρ(TN)ρ(NH+4-N)ρ(NO-2-N)ρ(NO-3-N)100～20050.3～72.650～700.02～0.920.26～1.961.2　1.26:pH317　　1　　　(sequencingbatchreactor,SBR),1.12L,,,,DO;(23±1)℃;,,.SBR、、、5.(30s)、(6h)、(20min)、(5min).1.3　[11]COD:;:;NO-2-N:N-(1-)-;NO-3-N:;:;MLSS:;pH:;DO:DO..2　2.1　30L/h,pH=7～8,,,6h,2.　　,:1h85%,88%,6h2.48mg/L,NO-2-N52.00mg/L,NO-3-N7.03mg/L,95%,.2.2　pH(23±1)℃,NaHCO3,NaOHHClpH,pH6.9～9,pH,pH.2　2.2.1　pHpH,pH=7.1,pH=7.8,pH=8.53.3pH=7.1,pH=7.8pH=8.5,4pH.3　pH　　,4h,pH=7.8,4h8.6mg/(L·h),pH=8.57.2mg/(L·h),pH=7.16.8mg/(L·h),pH,.,pH=7.88mg/(L·h),pH=8.5,4h318　　()268.8mg/(L·h),pH,2hpH8.0,pH,,pH7.1,.pH=7.1,,4h,pH6.5,2h5.8mg/(L·h),pH.,,pH,,,pH,pH,.4　pHpH2.2.2　pHpH,,,.53pH.pH7.5,pH,pH=8.5,2h,93%,pH=7.888%,pH=7.12h80%,,pH,,,pH,.5　pH　　,,pH,.pH=8.5,6h,89%,pH=7.885%,pH=7.1,6h75%,,.2.2.3　pH,SND,6.6　pH　　,,pH,pH=7.8,2～4h,2.3mg/(L·h).2,、NO-2-N、NO-3-N60.04mg/L,4h48.05mg/L,12mg/L(20%).(、pH、),26:pH319　　,4h4%.,,.,pH=8.5,,5.6mg/(L·h).pH=7.12h3.5mg/(L·h),pH6.3,pH.pH=7.8,6hpH6.8,2h4.2mg/(L·h).,pH,,pH,2h.3　　(1)30L/h,pH=7.8,,88%;(2)pH,4h,pH=7.8,t=2h,8.6mg/(L·h),pH=8.57.2mg/(L·h);t=4～7.5h,pH,pH=8.5,t=5.5h,8.9mg/(L·h),pH=7.88.7mg/(L·h)pH=7.16.0mg/(L·h);(3)pH,,pH=8.5,2h93%;,pH,,pH=7.1,2h80%6h75%;(4)pH,pH,2h,pH=8.5,5.6mg/(L·h);(5),.:[1]　LaanbroekHJ.Competitionforlimitingamountsofoxygenbetweennitrosomonaseuropaeaandnitrobac-teriawinogradskyigrownincontinuouscultured[J].ArchMicrobiology,1993,159:453-459.[2]　NorbertJardin.Behaviorofwasteactivatedsludgefromenhancedbiologicalphosphorousremovaldur-ingsludgetreatment[J].WaterEnvironmentRe-search,1996,68(6):965-973.[3]　SchmidtI,SliekersO,SchmidM,etal.Aerobicandanaerobicammoniaoxidizingbacteriacompetitorsornaturalpartners[J].FEMSMicrobiologyEcology,2002,39(3):175-181.[4]　MullerN.Implementingbiofilmcarriersintoactiva-tedsludgeprocess-15yearsofexperience[J].Wat.Sci.Tech.1998,37(9):167-174.[5]　SchlegalS.Theuseofsubmergedbiologicalfilters-fornitrification[J].Wat.Sci.Tech.1988,20(4-5):177-187.[6]　.SBR[D].:,2006,21-22.　(HanJinying.Processstudyofnitrificationanddeni-trificationbySBR[D].Shenyang:SchoolofMunici-palandEnvironmentalEngineeringofShenyangJianzhuUniversity,2006,21-22).[7]　CanaF,BeunJJ,VanLoosdrechtMCM,etal.SimuhaneousstorageanddegradationofPHBandglycogeninactivatedsludgecultures[J].WaterRe-search,2001,35(11):2693-2701.[8]　,.[J].,2006,16(4):19-21.　(YaoKuowei,YangJian.Discussiononshortcutni-trification-denitrificationfornitrogenremoval[J].EnvironmentalProtectionofOilGasFields,2006,16(4):19-21)[9]　,,.DOpH[J].,2006,7(1):37-41.　(GuoHaijuan,MaFang,ShenYaoliang.EffectsofDOandpHonnitrosofication[J].TechniquesandE-quipmentforEnvironmentalPollutionControl,2006,7(1):37-41.)[10],,.DO[J].,2004,20(5):13-16.　(ZhangXiaoling,LiBin,YangYongzhe.Short-cutnitrificationandsimultaneousnitrificationanddeni-trificationinSBRatlowDO[J].ChinaWaterWastewater,2004,20(5):13-16.)[11].[M].:,1989.　(SEPA.Monitoringanalysismethodofwaterandwastewater[M].Beijing:ChinaEnvironmentalSci-encePress,1989)320　　()26StudyontheShortcutNitrificationProcessunderLowDOandHighpHConditioninNormalTemperatureFUJinxiang1,HANJinying1,QIJianhua2,HANRujia1,XUYanyan1,WANGLi-ping1(1.SchoolofMunicipalandEnvironmentalEngineering,ShenyangJianzhuUniversity,ShenyangChina110168;2.CNNCChi-naNuclearPowerEngineeringCo.,LtdinHebei,ShijiazhuangChina,105021)Abstract:Inordertosolvetheproblemthatshort-cutnitrificationeffectsfactorspHdidnotfully-studiedandnitrogendeficiencyinshortcutnitrificationprocess,thispaperusesthetraditionalactivatedsludgeasakindofdomesticatedmudsludgeintheSBRreactor,andwithsimulateddomesticwastewaterastreatmentobject,theeffectsofpHinshortcutnitrificationanddenitrificationwereinvestigated,andthecausesofnitrogende-ficiencyduringsystem′soperationcyclewerealsodiscussed.TheresultsshowedthatpH=8.5,6h,thedeg-radationspeedrateofammonia-nitrogenis8.9mg/(L·h)andNO2-Naccumulationratesare93%,NO2-Naccumulationratesisreducedastimegoeson,thesmaller,themost,pH=7.1,2his80%,and6his75%.TheremovalrateofTNishighwiththeinletpHbecominghigh.WhenpH=8.5,thedegradationspeedrateofTNis5.6mg/(L·h).Insystemcyclenitrogenlossoccursinshortcutnitrificationprocess.Theconclusionisthatthedegradationspeedrateofammonia-nitrogenandTNandNO2-NaccumulationratesarehigherwiththehigherinletpH.Insystemcycleperiod,nitrogenlossmainlycausedbydenitrification,thatis,thesystemappearedsimultaneouswiththenitrificationand