改良UCT分段进水脱氮除磷工艺的性能分析葛士建

UCT100124UCT、。28．51mg/L0．44mg/LCOD44mg/LA32．6%～39．5%55．9%CODA/O、A2/O。UCTX703A1000－4602201121－0031－052008ZX07317－007－10500500054R7001PerformanceAnalysisofModifiedUCTStep-feedNutrientsRemovalProcessGEShi-jianPENGYong-zhenKeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentalRecoveryEngineeringBeijingUniversityofTechnologyBeijing100124ChinaAbstractCombinedwiththeupgradingandreconstructionprojectofawastewatertreatmentplantinBeijingthemechanismsfororganicdegradationenhancednitrogenandphosphorusremovalinano-velmodifiedUCTstep-feednutrientsremovalprocesstreatingrealmunicipalwastewaterwerestudiedandtheprocesscharacteristicsandthemainpointsindesignandoperationwerediscussed．Theresultsofthepilot-scaletestforabouttwoyearsshowthattheaverageTNTPandCODintheeffluentare8．51mg/L0．44mg/Land44mg/Lrespectivelymeetingtherequirementofthefirst-AdischargestandardinChina．Boththeconventionalnitrificationanddenitrificationprocessandaerobicsimultaneousnitrifica-tionanddenitrificationprocesscontributetotheadvancednitrogenremovalandtheanoxicphosphorusuptakewhichaccountsforapproximately32．6%to39．5%ofthetotalphosphorusuptakeisbenefitforthephosphorusremoval．Moreoverthesystemhashighutilizationefficiencyoftheinfluentorganicssince55．9%oftheinfluentorganicsareefficientlyutilizedintheanaerobicphosphorusreleaseanddenitrifica-tionprocess．ComparedtoA/OandA2/OprocessesthemodifiedUCTstep-feednutrientsremovalprocessjustneedstocanceltheinternalrecyclesystemandadjusttheinfluentpipelinesandthereforetheprocessiseasytobeusedinupgradingandreconstructionofexistingwastewatertreatmentplantswithapromisingapplicationmarket．·13·2721201111CHINAWATER＆WASTEWATERVol．27No．21Nov．2011KeywordsstepfeedUCTnitrogenandphosphorusremovalupgradingandreconstruc-tionA2/O《》GB18918—2002A。A2/O1～4。UCT———UCT5。11.1UCT1、。。340L50cm×60cm×125cm。。50cm60°90cm88L、。。1UCTFig．1Schematicdiagramofpilot-scalemodifiedUCTstepfeedBNRprocess1．02m3/d8～10h10d100%50%～100%。1.21。A2/O。1Tab．1Wastewatercharacteristicsofstepfeedprocessmg·L－1BOD5CODNH+4－NNO－2－NNO－3－NTNPO3－4－PTPSS120～254153～48019．2～69．90～0．390～2．3620．0～70．10．48～9．120．59～13．498～20417030851．00．070．9152．93．926．431431.3N－1－－CODCODMLSSSS6pH、ORP、DOWTWpH/Oxi340i。22.1UCTSS、COD、NH+4－N、TN、TP8、44、0．25、8．51、0．44mg/L87．4%、91．6%、98．8%、95．8%、93．4%。2.2UCT2。。21·23·2721．watergasheat．com122。2UCTFig．2NitrogenvariationsalongmodifiedUCTstepfeedprocess。。2.3PO3－4－P3。3UCTFig．3PhosphorusvariationsalongmodifiedUCTstepfeedprocess24mg/L32．6%～39．5%。1。2。2.4CODCOD。。COD。33.1。COD255．9%COD6．21%7C/NA。COD。2CODTab．2Organicsremovalwaysinsystem/g·d－1334．937．231．5175．5/%55．96．215．2629．33.2MLSSMLSS4。MLSS5825mg/LMLSS4735mg/LA/OMLSS4710mg/L。、。·33·．watergasheat．comUCT2721。4UCTMLSSFig．4MLSSvariationsalongmodifiedUCTstepfeedprocess3.3。“”。A/OUCTSVI60～105mL/gA/OSVI120mL/g。3.4、pHORP5。5UCT、pHORPFig．5AlkalinitypHandORPvariationsalongmodifiedUCTstepfeedprocess。/“———”pH。3.5A/O、A2/O①②。。2。。3.6、//UCT。①②③。/。、、SRT。。。。、。、。4①UCTTN、TP、COD8．51、0．44、44mg/LGB18918—2002·43·2721．watergasheat．comA。②55．9%COD6．21%。③SVI60～105mL/g。④A/O、A2/O。1PENGYong-zhenWANGXiao-lianLIBai-kun．AnoxicbiologicalphosphorusuptakeandtheeffectofexcessiveaerationonbiologicalphosphorusremovalintheA2OprocessJ．Desalination20061891/3155－164．2ZENGWeiLILeiYANGYingyingetal．Nitritationanddenitritationofdomesticwastewaterusingacontinuousanaerobic-anoxic-aerobicA2Oprocessatambienttem-peraturesJ．BioresourTechnol2010101218074－8082．3HallinSLindbergCFPellMetal．Microbialadapta-tionprocessandasuggestedcontrolstrategyinapre-denitrificationsystemwithethanoldosageJ．WaterSciTechnol1996341288－93．4WANGXiao-lianPENGYong-zhenWANGShu-yingetal．InfluenceofwastewatercompositiononnitrogenandphosphorusremovalandprocesscontrolinA2/OprocessJ．BioporcessandBiosystemsEngineering2006286397－404．5GEShi-jianPENGYong-zhenWANGShu-yingetal．Enhancednutrientremovalinamodifiedstepfeedprocesstreatingmunicipalwastewaterwithdifferentinflowdistri-butionratiosandnutrientratiosJ．BioresourTechnol2010101239012－9019．6APHA．StandardMethodsfortheExaminationofWaterandWastewater20thedM．WashingtonDCAPHA1998．7．UCTJ．20106141009－1017．1987－。[e-mail]櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵2011－06－27306XuHLiuYTayJH．EffectofpHonnickelbiosorp-tionbyaerobicgranularsludgeJ．BioresourTechnol2005973359－363．7APHA．StandardMethodsfortheExaminationofWaterandWastewaterM．WashingtonDCAmericanPublicHealthAssociation1998．8AdavSSLeeDJShowKYetal．AerobicgranularsludgeRecentadvancesJ．BiotechnolAdv2008265411－423．9McSwainBSIrvineRLHausnerMetal．CompositionanddistributionofextracellularpolymericsubstancesinaerobicflocsandgranularsludgeJ．ApplEnvironMi-crobiol20057121051－1057．10LiuYQLiuYTayJH．TheeffectsofextracellularpolymericsubstancesontheformationandstabilityofbiogranulesJ．ApplMicrobiolBiotechnol2004652143－148．11．J．200420646－48．12BerentNPengDCDelgeniesJPetal．NitrificationatlowoxygenconcentrationinbiofilmreactorJ．JEnvi-ronEng20011273266－271．1984－。[e-mail]2011－07－11·53·．watergasheat．comUCT2721