反硝化深床滤池深度脱氮效果研究胡香

230088A2/O//——《》GB18918—2002A、、、COD0．3、10、2．040mg/L。。TN89．2%68．3%TN20．9%TN。TN。。1kg3．60kg26．2%36．5。[e-mail]DenitrificationinDeepBedDenitrificationFilterHUXiangZHANGHuiXUGuang-yuanHOUHong-xunAnhuiGuozhenEnvironmentalProtectionScience＆TechnologyCo．Ltd．Hefei230088ChinaAbstractTheA2/Oanaerobic/anoxic/aerobicoxidationditch－coagulationsedimentation－deepbeddenitrificationfilterDBDFcombinedprocesswasappliedtotreatmunicipalwastewaterinanexpandedwastewatertreatmentplantWWTPinHefeiCitywhichenforcedtheeffluenttomeetthefirstlevelAcriteriaspecifiedintheDischargeStandardofPollutantsforMunicipalWastewaterTreatmentPlantGB18918－2002．BesidestheconcentrationsofTPTNNH+4－NandCODineffluentwerebelow0．3102．0and40mg/Lrespectively．ThisstudyevaluatedtheadvanceddenitrificaionperformanceintheDBDFaswellastheeffectofdissolvedoxygenDOininfluentoftheDBDFonboththedenitrif-icaionefficiencyandtheexternalcarbonsourceaddition．TheoperationalresultsdemonstratedgoodTNremovalefficiency89．2%inthebiosysteminwhich68．3%and20．9%ofTNininfluentwerere-movedinthepre-denitrificationinoxidationditchandpost-denitrificationinDBDFrespectively．ThedeepbeddenitrificationfiltercouldbeusedasthesafeguardforeffluentTNwiththeadditionofexternalcarbonsource．TheDOconcentrationwaspositivelyrelatedtothedosageofexternalcarbonsourcebutinverselyrelatedtothenitrateremovedinDBDF．Adoseof3．60kgmethanewasrequiredtoremove1kgnitratewith26．2%ofmethanedosedwasdepletedbytheinfluentDO．Itisrecommendedtotake·31·3321201711CHINAWATEＲ＆WASTEWATEＲVol．33No．21Nov．2017somemeasurestoeliminatethedissolvedoxygenininfluentofDBDFwhichisexpectedtosavethecostofmethaneat365000yuanperyear．KeywordsdeepbeddenitrificationfilterDBDFadvanceddenitrificationdissolvedoxy-genexternalcarbonsource、1。2012、、、《》GB18918—2002A。《》DB34/2710—2016201711、、ⅣCOD≤40mg/LNH+4－N≤2．0mg/LTN≤10mg/LTP≤0．3mg/L。、。SS、2～7。、A2/OSBＲTNTN5mg/L89。AA。。1011DO6～8mg/L。AⅣ。11.110×104m3/d《》GB18918—2002A、、、COD40．3、10、2．040mg/L。1A2/OTN、SSSSTP。1Fig．1FlowchartofexpandedwastewatertreatmentplantinHefeiCity·41·3321．watergasheat．com1.29%《》CJ343—2010。20151020161。BOD5/COD=0．44。BOD5/TN＞3～5BOD5/TN=3．1。。97%。12016Tab．1Characteristicsofinfluentin2016pH7．02～7．677．29COD/mg·L－163～687191BOD5/mg·L－125．8～152．683．6SS/mg·L－180～282168NH+4－N/mg·L－18．0～55．018．4TN/mg·L－112．7～66．228．4PO3－4－P/mg·L－10．95～6．262．90TP/mg·L－11．04～12．053．44BOD5/COD0．11～0．760．44BOD5/TN1．1～8．43．1BOD5/TP8．7～76．528．7COD/TN2．2～15．56．8COD/TP27．3～207．759．21.3SS、TN、NH+4－N、TP2。2Tab．2ＲequirementforcharacteristicsofinfluentandeffluentinDBDFmg·L－1SSTNNH+4－NTPCODBOD5≤20≤15≤1．51．5≤50≤20≤10≤5≤1．5≤0．3≤30≤101.428L×B×H=18．3m×6．1m×5．6m0．62kgNO－3－N/m3·d1．7～3．35mm4．8m/h6．24m/h1．83m。24h2min10min5min15m3/m2·h92m3/m2·h。4～8h2～5min。22.12。TN12．7～66．2mg/L28．4mg/L。TN1．73～16．48mg/L8．70mg/L。TN0．18～4．66mg/L2．85mg/LTN＜10mg/L。2TNFig．2VariationofTNinbiosystemTN、TN3。TN89．2%68．3%TN20．9%TN。TN61．7%。TNTN。TN。·51·．watergasheat．com33213、Fig．3Pre-denitrificationpost-denitrificationandoveralldenitrificationefficiencyinbiosystem2.2NO－3－NTN87．9%TN。4NO－3－N。4、NO－3－NFig．4VariationofNO－3－NinDBDFNO－3－N201631NO－3－N10mg/L115—1710NO－3－N10mg/L15mg/L。NO－3－N5mg/L5．46mg/L12．82mg/L。TN5mg/L。NO－3－N63．3%TN61．7%TN。2.3CODCOD20mg/LCOD。5COD。2016370%COD。TN5mg/LSSSS。COD150mg/LCOD30mg/LCOD。5CODFig．5VariationofCODinDBDF2.4。。NO－3－N·61·3321．watergasheat．com。。5～7mg/L6。6DONO－3－NFig．6ＲatioofcarbonsourcedepletedbyDOandNO－3－NremovalinDBDF。TN0．62kgNO－3－N/m3·d。5～7mg/L。、DODODO。DODO。1kg3．60kgDO20%～40%26．2%。18．0mg/L26．5mg/L1．47。DONO－2－NC=1．47×2．47CNO－3－N+0．87DO126．2%。6．0mg/L1mg/LDO1mg/LCODCOD120×104mg/L2000/m336．5。3①A2/O——ACOD＜40mg/LNH+4－N＜2．0mg/LTN＜10mg/LTP＜0．3mg/L。②TN89．2%68．3%TN20．9%TN。TNTN＜10mg/L。③。1kg3．60kgDO26．2%。36．5。④C=1．47×2．47CNO－3－N+0．87DO。1．J．200935101－2．2．J．2015345109－111．3．CAST－J．201745592－94．4．J．2010262230－34．5．/J．24·71·3321201711CHINAWATEＲ＆WASTEWATEＲVol．33No．21Nov．20177．J．2007231494－99．8．、J．2009251714－19．9．CODJ．200723137－10．10．A2/OA2/OJ．2015952185－2190．11．J．20161052175－2183．12．A2/OD．2016．13vanLoosdrechtMCM．J．200824489－94．14HaoXDvanLoosdrechtMCMMeijerSCFetal．Model-basedevaluationofatwo-sludgesystemwithde-nitrifyingphosphateremovalJ．JEnvironChemEng20011272112－118．15SmoldersGJFvanLoosdrechtMCMHeijnenJJ．Steadystateanalysistoevaluatethephosphateremovalcapacityandacetaterequirementofbiologicalphosphorusremovingmainstreamandside-streamprocessconfigura-tionsJ．WaterＲes199630112748－2760．16．M．2011．17vanLoosdrechtMCMBrandseFAdeVriesAC．Up-gradingofwastewatertreatmentprocessesforintegratednutrientremoval—theBCFSprocessJ．WaterSciTechnol1998379209－217．1960－、、《WaterＲesearch》Editor。[e-mail]櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆2017－08－28172016322044－47．6．J．20167119－120．7．J．201026432－34．8．J．201432949－55．9．LeopoldJ．201635380－86．10．A2O－－J．201647362－65．11．J．2015898－100．1986－。[e-mail]2017－05－22·42·3321．watergasheat．com