不同BODN对活性污泥沉降性能的影响

32BOD/N*·250014SBRNBOD/N。BOD/N100/5100/3BOD/N100/1。NCODMLSS。BOD/NSBRX703A1003-6504(2009)01-0166-04EffectofDifferentBOD/NonPropertyofActivatedSludgeSettlingSUNTian-ranCHENGJie-min*WANGHan-weiSchoolofPopulationResourceandEnvironmentShandongNormalUniversityJinan250014ChinaAbstractEffectofdifferentnitrogencontentonsettlingpropertyofactivatedsludgewasinvestigatedspeciallyinsomeexperimentscarriedonasequencingbatchreactorSBRfedwithdomesticwastewater.ExperimentalresultsshowedthatsludgesettledproperlyataninfluentvalueofBOD/N100/5and100/3.WhenvalueofBOD/Nwas100/1non-filamentousactivatedsludgebulkingcausedbyanexcessivegrowthofviscouszoogloeawithhighmoisturecontentoccurredlightly.EffectofvariousnitrogencontentsonCODremovalefficiencyandchangesofmixedliquorsuspendedsolidswerestudiedintheexperiment.KeywordssludgesettlingnitrogenBOD/NsequencingbatchreactorSBRactivatedsludge、、[1]、、、[2]。[3]95%ExtracellularPolymericSubstancesEPS[4]、[5]BOD/N/P=100/5/1[6]。BOD/N/P100/1/4PNN。11.11。[e-mail]*[e-mail]。EnvironmentalScience&Technology32120091Vol.32No.1Jan.20091Table1WaterqualityofexperimentpHCOD(mg/L)BOD(mg/L)TN(mg/L)TPmg/LDOmg/LkgBOD·kgSS-1·d-16.7~7.8270~32581~1221.0254.32.0~4.00.11.2SequencingBatchReactorSBR1、、、11、[7]10L。SludgeVolumeIndexSVI。SVI150mL/g。120±1℃TPNH4ClTNBOD/N100/5、100/3、100/12。BOD/NSVISVI100mL/gBOD/N。、、、52.6h、30min。1.3CODBODTN-。SVIMLSS[8]。、。22.1BOD/NSVI50~150[8]。BOD/N2。BOD/N100/560SVI40mL/g。BOD/N100/3SVI6050mL/g。BOD/N100/1SVI3045158mL/gSVI53190mL/gSVI180mL/g。。BOD/N100/1。BOD/N100/3。BOD/N100/5[4]BOD/N100/3。BOD/N100/3。2.2BOD/NMLSSMLSS。BOD/NMLSS3。BOD/N100/5、100/3100/1。30MLSSMLSS2000mg/L。MLSSBOD/N=100/5、100/3、100/1。30~40BOD/N100/5100/3MLSS。40BOD/N100/5MLSS100/3MLSS2500mg/L。BOD/N100/130MLSS1800mg/L。SBRBOD/N100/3。2Table2DescriptionoftheexperimentBOD/N100/5100/3100/1TN(mg/L)5.273.141.025BOD/N167322.3BOD/NCODCODA＝COD1-COD2COD1×100%ACOD1CODCOD2COD。4BOD/N100/5100/3COD80%~90%。BOD/N100/1COD80%35COD50COD64%65%。。BOD/N100/1N。GB18918-2002。2.4BOD/NTNNI＝TN1-TN2TN1×100%ITNTN1TNTN2TN。5BOD/N100/1100/3100/5TNBOD/N100/5TN2090%BOD/N100/1TN70%BOD/N100/380%~90%。BOD/N100/5TN、[4]20TNNBOD/N100/1TN。TNTNBOD/N100/3BOD/N100/5N。BOD/N100/3。3BOD/N100/5100/3COD80%N80%BOD/N100/1N。BOD/N100/1。BOD/N100/3。[][1].[J].200629123-125.XiaoZuo-yiFanRong-huaWangZi-rui.Activatedsludgeandbiofaciesobservationandpractice[J].Environ－mentalScience&Technology200629s123-125.inChinese16811[2]NovakLLLarreaJWanneretal.Non-filamentousacti－vatedsludgebulkinginalaboratoryscalesystem[J].WatRes19932781339-1346.[3]EikelboomDH.ProcessControlofActivatedSludgePlantsbyMicroscopicInvestigation[M].LondonIWAPublishingAllianceHouse2000143.[4].[J].200629346-48.FangLiangZhangLi-liCaiWei-min.Comparativestudyofextractionmethodsofextracellularpolymericsubstancesfromactivatedsludge[J].EnvironmentalScience&Technol－ogy200629346-48.inChinese[5].[M]..2004RittmannBEMcCartyPL.EnvironmentalBiotechnolo－gyPrinciplesandApplications[M].Beijing:TsinghuaUni－versityPress,2004.inChinese[6].[J].200425654-58.ChenYingPengYong-zhenLiuMinetal.Effectofnutrientonsludgesettlingpropertyandbulkingcontrols[J].EnvironmentalScience200425654-58.inChinese[7].[J].200730475-77.LiShu-huiTaoTaoYeDingetal.Commissioningandoperationofcyclicactivesludgesequencesystemreactor[J].EnvironmentalScience&Technology200730475-77.inChinese[8].[M].2004.XiDan-liSunYu-shengLiuXiu-ying.EnvironmentalMonitoring[M].BeijingAdvancedEducationPress2004.inChineseBOD/N169