SBR中生物膜促进好氧颗粒化研究程媛媛

SBＲ1212121212121．3410002．341000AGS。23d24d。AGS30d。。COD、TINTP90%、82%80%。TU99[e-mail]eleratedbyBiofilminaSequencingBatchＲeactorCHENGYuan-yuan12ZHAOJue12CHENGPeng12XUANXin-peng12ZHANGLi-nan12LONGBei121．JiangxiKeyLaboratoryofEnvironmentalGeotechnologyandEngineeringDisasterControlGanzhou341000China2．SchoolofArchitecturalandSurveying＆MappingEngineeringJiangxiUniversityofScienceandTechnologyGanzhou341000ChinaAbstractThestrategythatattachedbiofilmwasscrappedintomixedliquorduringcultivationofaerobicgranularsludgeAGSbyselectionpressuremethodanditsinfluenceonthegranulationprocesswasexplored．Theproportionofgranulesincreasedalongwithattachedbiofilmscrappedintothemixedliquorduringthefirst23daysandgranulationrateincreasedquicklyaftertheelasticfillerwasremovedwhichleftalargeamountoffreebiofilmscrappedintothemixedliquorfromthe24thday．Theresultin-dicatedthatfreebiofilmplayedtheroleofprecursorandnucleiintheformationofAGSwheretheextra-cellularpolymericsubstancesnetworkfacilitatedtheconversionofloosebiofilmintocompactAGSbyhighselectionpressure．ThereforeAGSwascultivatedwithin30daysatlowtemperatureinwinterbythestrategy．Theexistenceofelasticfillergreatlyenhancedthestabilityofthesystemtoresistsludgebul-kingwhichreducedtheriskofstartupfailureevenifoperationalparameterwasimproperlycontrolledbyselectionpressuremethod．GoodperformanceofthereactorwasachievedwhereremovalratesofCOD·41·34120181CHINAWATEＲ＆WASTEWATEＲVol．34No．1Jan．2018TINandTPwereusuallymorethan90%82%and80%duringtheoperation．KeywordsaerobicgranularsludgebiofilmgranulationelasticfillerstabilityAGS、、1。2。SBＲAGS1～23。45。6AGS1～35。。、AGS。78、910、1112、1314。、。、、。AGS1516AGS1。AGS17。。AGSSBＲAGSAGSAGS。11.1SBＲ10．21L10cm130cmH/D1350%。1～23d1150cm、310m2/m324d。1．2～1．5cm/s。12℃、7℃、。SBＲMLSS2500mg/L。6h、、441。W023d。W1W2。W1－W0W1－W2。1Tab．1Compositionofacycle/d/min/min/min/min1#1～333253022#4～633452023#7～833381724#9～1533431225#16～233348726#24～253350527#26～283352328#29～303353．51．529#31～423354121.218、、。COD、、TP600、306mg/LCOD2．4kg/m3·d。1.3COD、、、TP、SV、SVI、MLSS、·51·．watergasheat．comSBＲ341MLVSS19TIN、、、EPS17PS－PNLoweryEPS。22.13d423d。1。1～3d、13～15d。24d。1Fig．1Quantityofbiofilmandmasspercentageofstrippedbiofilm2。2=5mmFig．2Morphologicalchangesofsludgebar=5mm4d56。22dAGS30dAGS。5d36d。、AGS。2.22.2.1SV30/SV5SVI3。4dSVI11dSVI15d194．30mL/g。15dSVI3023．84mL/g。SVI25．81～37．34mL/g。SV30/SV58d59．09%～69．23%9～21d91．67%～57．14%2290%。20AGSSV30SV510%。36dAGS。3SV30/SV5SVIFig．3VariationofSV30/SV5andSVIduringcultivation2.2.2MLSSMLVSS/MLSSMLSSMLVSS/MLSS4。MLSS5d3．95～7．96g/LMLSSCOD。MLSS21d26d3．29g/L。AGS8dMLSS34·61·341．watergasheat．comd9．30g/L。MLSS7．08～7．34g/L。MLVSS/MLSS12d0．47～0．6013dMLVSS/MLSS0．81。8dMLVSS/MLSS210．24。13dMLVSS/MLSS0．31～0．5636d0．54～0．61。4MLSSMLVSS/MLSSFig．4VariationofMLSSandMLVSS/MLSSduringcultivation2.2.3EPSPN/PSEPSPN/PS5。EPS12d1243．83mg/gMLVSS。EPS2122EPS。EPS。5EPSPN/PSFig．5VariationofEPSandPN/PSduringcultivation22dEPS50．82～156．72mg/gMLVSS36d134．23～146．49mg/gMLVSS。PN/PS8d0．3～0．522dPN/PS0．40～1．5832dPN/PS0．71～0．84。EPSPN/PS、AGS。2.2.46a。29d22d2250%。24d30d90%。90%2330d。24d。30d1．2mm。6、Fig．6Variationsofgranulationrateaverageparticlesizeandsizedistributionduringcultivation6b93．82%～5．60%。0．3～0．6mm0．6～1、1～1．43、1．43～22～4mm。·71·．watergasheat．comSBＲ34124d1mm13%～22%。2.3COD4COD100mg/L90%。TP11d0．11～3．16mg/LTP1．0mg/L80%。116～183．50mg/LTIN5．30mg/L、82%3．2mg/LTIN0．70mg/L7。7TINFig．7ProfileofeffluentTINNH+4－NNO－3－NNO－2－NandremovalrateofTIN2.4AGS6AGS、AGS。1．2～1．5cm/s30～1min2．4kg/m3·d。24d。8～23dEPS86．78～95．56mg/gMLVSSPN/PS1．12～1．34EPS36dAGS134．23～142．72mg/gMLVSS。“”EPS6AGS8。AGS56AGSAGS。8Fig．8MechanismofrapidaerobicgranulationAGS。13～15d0．40kgCOD/kgMLSS·d0．62kgCOD/kgMLSS·d。。。“→→→AGS”AGS。3“→→→AGS”30d36dAGS。“”EPSAGS。1AdavSSLeeDJShowKYetal．AerobicgranularsludgerecentadvancesJ．BiotechnolAdv200826·81·341．watergasheat．com411－423．2．J．20163561914－1922．3ZhangQGHuJJLeeDJ．Aerobicgranularproces-sesCurrentresearchtrendsJ．BioresourTechnol201621074－80．4LimSJKimTH．ApplicabilityandtrendsofanaerobicgranularsludgetreatmentprocessesJ．Biomass＆Bioenergy201360189－202．5PronkMKreukMKDBruinBDetal．Fullscaleper-formanceoftheaerobicgranularsludgeprocessforsew-agetreatmentJ．WaterＲes201584207－217．6LiuYWangZWQinLetal．Selectionpressure-driv-enaerobicgranulationinasequencingbatchreactorJ．ApplMicrobiolBiotechnol20056726－32．7LiAJLiXYYuHQ．Aerobicsludgegranulationfa-cilitatedbyactivatedcarbonforpartialnitrificationtreat-mentofammonia-richwastewaterJ．ChemEngJ2013218253－259．8ZhouJHZhaoHHuMetal．Granularactivatedcar-bonasnucleatingagentforaerobicsludgegranulationeffectofGACsizeonvelocityfielddifferencesGACversusflocsandaggregationbehaviorJ．BioresourTechnol2015198358－363．9LiXMLiuQQYangQetal．EnhancedaerobicsludgegranulationinsequencingbatchreactorbyMg2+augmentationJ．BioresourTechnol200910064－67．10SajjadMKimKS．InfluenceofMg2+catalyzedgranu-larsludgeonfluxsustainabilityinasequencingbatchmembranebioreactorsystemJ．ChemEngJ2015281404－410．11．J．2017331513－19．12．J．201733178－13．13IvanovVWangXHStabnikovaO．StartercultureofP