SBR分段进水工艺提高污水厂的脱氮效率王加蒙

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95Vol.9No.520155ChineseJournalofEnvironmentalEngineeringMay2015SBR122112*1.1500902.100124SBR、SBR。2、21、125%320%~40%235%40%30%。X703.1A1673-9108201505-2131-06WaysofSBRstepfeedprocesstoimproveefficiencyofnitrogenremovalinwastewatertreatmentplantWangJiameng1PengChengyao2XinZhenxing2LiXiaoling1PengYongzhen121.StateKeyLaboratoryofUrbanWaterResourceandEnvironmentHarbinInstituteofTechnologyHarbin150090China2.KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineeringBeijingUniversityofTechnologyBeijing100124ChinaAbstractTheSBRstepfeedprocesswasadoptedforwastewatertreatmentplantupgradetoimprovetheef-ficiencyofnitrogenremovalinaKunmingwastewatertreatmentplantafterfieldinvestigationinthisstudy.Theeffectsofoperationmodewayofinfluentandratioofdrainageontotalnitrogenremovalwerestudiedinlaborato-ryscaleSBRreactors.ResultsshowedthatdenitrificationprocesswashardlyoccurredinthesecondmixingprocessoftheoriginaloperationmodeforstirringtwiceandaerationtwicewhilethetransformedoperationmodeforstirringonceandaerationoncecouldincreasetheTNremovalefficiency.Besideswhentheoriginalcontinui-tyinfluentmodewaschangedtointermittentinfluentmodenitrogenremovalefficiencyincreasedbymorethan5%Inadditionwhendrainageratiovariedbetween20%~40%threestageswereseparatelycompareditwasfoundthattheTNremovalefficiencyincreasedastheriseofdrainageratioineachstage.Howeverwhentheratioswere35%and40%theconcentrationofammoniaineffluentlargelyincreased.Thereforetheoptimumdrainageratiowas30%.Keywordssewageplantupgradeoperationmodeintermittentinfluentratioofdrainage“”2012ZX07302002-062014-04-032014-06-011989—。E-mailwangjiameng712@163.com*E-mailpyz@bjut.edu.cn。“”。ICEASSBRA。5%。9。Kuba1C/N3.4C/N。2。2-440%。5-8。291011SBR。SBRC/N。12SBRTN<2mg/LTN97.3%。13SBRORP、DO、pH、SBR。intermittentcycleextendedactivatedsludgeICEASSBR85%~90%、。ICEAS4.8h/15t/d36min56min20min56min50min70min6t/d22min60min26min60min50min70min。40%DO≤0.5mg/L20%A2/O14。、。11.1SBR19L。。DO、ORPpH。A、B、C、DE5SBR#A22min60min26min60min50min70min。#B#C#B#C1SBRFig.1SchematicdiagramofSBR23125SBR、1。#D#E2。1Table1Reactoroperatingstatusunderdifferentwaysofinfluent#B#Ch4.84.8303048min120min50min70min48min120min50min70min4500mg/L2Table2Reactoroperatingstatuswhenratioofdrainagewasdifferent123d1~1718~3435~41#D1#E1#D2#E2#D3#E3%203035303540C/TN=4C/TN=5.5C/TN=24.8h48min120min50min70min4500mg/L1.2COD42.5~220.9mg/LNH3-N25.6~38.6mg/LTN27.4~39.6mg/LC/TN1.3~5.7。COD/TN2.9CODC/TN422323。-COD5B-2CODMLSSpH、ORPDOWTWpH/Oxi340i。22.1。#A。COD68.52mg/L21.73mg/LTN26.63mg/L。22DODO≤0.5mg/L。COD47.2mg/L10.62mg/LTN22.57mg/L2DO0.5mg/L。2Fig.2Variationsofpollutantsinreactioncellduringacycle3#ACOD213.5mg/L26.21mg/L28.28mg/L。。。1mg3.75mgpHORP。1pH、ORP3312915。3#AFig.3Variationsofpollutantsandon-lineparametersin#Asystem1DODO0.1mg/L1mg/LDODOpH0DOpHDODO5mg/LDOpHpHDO、ORPDO、ORP0。2DOpHORP。DO1mg/L5minDO0.5mg/L22。21。2、CODDOpHORP。。SBR221122DO2。1121。2.2SBR。4#B#C#B35.7%#C43.7%。5%24Fig.4ChangesinwayofinfluentandTNremovalefficiency43125SBR。。2.3SBRA2/OHRT=V/Q。320%40%。1530%#E20%#D55.7%43.5%。4.8。#E2.5mg/L#D0.9mg/L#E#D。#E#D1mg/L2.5mg/L。1#D20%#E30%5Fig.5ChangesinratioofdrainageandTNremovalefficiency2#E30%#D35%65.5#D69.6%#E66.7%2#D35%#E30%6Fig.6ChangesinratioofdrainageandTNremovalefficiency26~85%。3#E40%7#D31%#E34%。35%~40%2mg/L。3#D35%#E40%7Fig.7ChangesinratioofdrainageandTNremovalefficiency312225312911。2ICEASSBR5%。3320%40%35%40%A30%。1KubaT.vanLoosdrechtM.C.M.HeijnenJ.J.Phos-phorusandnitrogenremovalwithminimalCODrequirementbyintegrationofdenitrifyingdephosphatationandnitrifica-tioninatwo-sludgesystem.WaterResearch19963071702-17102..200319121-5GaoDawenPengYongzhenYangQingetal.Applica-tionofrealtimecontrolforachievingandstabilizingshort-cutnitrificationanddenitrification.ChinaWater&Wastewater200319121-5inChinese3..200738212-15WangPengLinHuadong.Analysisonfactorsaffectingshort-termnitrification-denitrification.IndustrialWater&Wastewater200738212-15inChinese4..2011379163-168LiZebinLiJunLiYanetal.Researchofshortcutnitri-ficationanddenitrificationtechnologydevelopment.ChinaWater&Wastewater2011379163-168inChi-nese5AyesaE.OyarbideG.LarreaL.etal.Observabilityofreducedordermodels-applicationtoamodelforcontrolofalphaprocess.WaterScienceandTechnology1995312161-1706AyesaE.GoyaB.LarreaA.etal.Selectionofopera-tionalstrategiesinactivatedsludgeprocessesbasedonopti-mizationalgorithms.WaterScienceandTechnology19983712327-3347GrgünE.ArtanE.OrhonD.etal.Evaluationofni-trogenremovalbystepfeedinginlargetreatmentplants.WaterScienceandTechnology1996341-2253-2608DaiggerG.T.ParkerD.S.EnhancingnitrificationinNorthAmericanactivatedsludgeplants.WaterScienceandTechnology200041997-1059.C/N.2009292225-230PengYongzhenMaBin.Reviewofbiologicalnitrogenre-movalenhancementtechnologiesandprocessesunderlowC/Nratio.ActaScientiaeCircumstantiae2009292225-230inChinese10.A2/O.2010261147-50WangJiaweiZhengJiangZhouJunetal.Step-feedinA2/Oprocessbasedoncarbonsourcedemand.ChinaWa-ter&Wastewater2010261147-50inChinese11.A2O/MBR.201127520-23XuMinLiJiZhengXiaoyingetal.Influencemecha-nismofstep-feedoncombinedprocessofA2/OandM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