SBR分段进水工艺提高污水厂的脱氮效率王加蒙

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-mail]*[e-mail]。“”。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