改进型曝气生物滤池对生活污水氮去除的影响伦琳

4　5环境工程学报Vol.4,No.520105ChineseJournalofEnvironmentalEngineeringMay2010伦　琳1　郑　正1,2＊　张继彪1　梁越敢1(1.,,210093;2.,200433)　　,,、。:8h,10∶1,COD、TNNH+4-N92.5%、48.6%69.4%。,CODNH+4-N,TN60.5%。,。　　　　　X703.1　　　A　　　1673-9108(2010)05-1017-06EffectofmodifiedbiologicalaeratedfilteronnitrogenremovalofdomesticwastewaterLunLin1　ZhengZheng1,2　ZhangJibiao1　LiangYuegan1(1.StateKeyLaboratoryofPollutionControlandResourceReuse,NanjingUniversity,Nanjing210093,China;2.DepartmentofEnvironmentalScienceandEngineering,FudanUniversity,Shanghai200433,China)Abstract　TheaerationsysteminstalledinthemiddleofBAFwasusedfordomesticwastewatertreatment.Gas-to-liquidratios、organicloadingsandmicrobesalongthereactorofBAFwereinvestigated.ResultsindicatethatthegoodperformanceofBAFcanbeachievedathydraulicretentiontime8h,gas-to-liquidratio10∶1,theaverageremovalratesofCOD,TN,NH+4-Ninoptimalstageare92.5%,48.6%and69.4%,respectively.HigherorganicloadingsresultinlowerefficienciesofCOD、NH+4-Nremoval,buttheefficiencyofTNremovalin-creasesto60.5%.Basedonexperimentalresultsandtheoreticalanalysis,themechanismofTNremovalwasprobed.Keywords　modifiedbiologicalaeratedfilter;domesticwastewater;gas-to-liquidratio;carbonandnitro-genremoval:(200801028):2009-05-31;:2009-08-08:(1985～),,,。E-mail:[e-mail]＊,E-mail:[e-mail]　　(biologicalaeratedfilter,BAF),。,、、[1,2]。,,DO,。,DO,,,[3～5]。、,/[6]。DO,、,,[7,8]。DO,,BAFDO,BAFDO,DO[9],BAFDO。,4BAF,,DO。,,,,。、BAF,。1　1.1　,150mm×1500mm。3～5mm,1200mm,50mm,200mm,6。,500mm,,。BAF,,1。　　、,。、,,1　Fig.1　Schematicdiagramofbiologicalaeratedfilter。14d,6L/(m2·s),4L/(m2·s),15min。1.2　,、、、、FeCl3、CaCl2·H2OMgSO4。1。,,。1　Table1　Qualityoftestedwater(d)pHCOD(mg/L)NH+4-N(mg/L)TN(mg/L)TP(mg/L)0～1306.36～7.03110～145.520.3～28.923.5～33.58.6～9.0130～1506.38～6.54235.7～291.543.6～47.745.3～49.811.0～13.571.3　24h,8h。2008618,150d,30d,18～33℃,pH6.0～7.0。130d,20081010,。1.4　DO;COD;NH+4-N;TN-;NO-3-N;NO-2-NN-(1-)-[10]。2　2.1　COD、NH+4-NTNCOD110～145.5mg/L,NH+4-N20.3～28.9mg/L,TN23.5～33.5mg/L8h,7∶1、10∶113∶1,BAFCOD、NH+4-NTN。2。2(a),7∶1、10∶113∶1,COD,25mg/L,79.2%、92.5%88.8%。,,10185　:,COD。2(b),NH+4-N,68.1%、69.4%73.2%;TN,40.8%,48.6%39.2%。《》。NH+4-NTN。,,,,NH+4-N5mg/L。3,,10∶10.9mg/L13∶11.08mg/L,,TN48.6%39.2%。,,TN,,,DO,10∶1。2　COD、NH+4-NTNFig.2　COD、NH+4-NandTNremovalatdifferentgas-to-liquidratios2.2　、3　DOFig.3　ConcentrationofDOatdifferentgas-to-liquidratiosCOD、[5]。BAF,、DO,BAF,。10∶1,4。50cm,50cm,50cm。4,50cm。,,,、,COD120mg/L25.2mg/L,79%;2.2～3.5mg/L,,,NO-3-N,。50cm,NO-3-N,、DO,,,[11]。[12],BAFDO,,NO-2-NNO-3-N。,NO-2-N,NO-2-N,TN(TN=[NH+4-N]+[NO-2-N]+[NO-3-N]),50cmTN25.2%,50cmTN17.2%,BAF。101944　Fig.4　Concentrationsofeffluentalongfilters2.3　8h,10∶1,pH6.0～7.0,COD235.7～291.5mg/L,NH+4-N43.6～47.7mg/L,TN45.3～49.8mg/L,0.32kg/(m3·d)(COD110mg/L)0.73kg/(m3·d)(COD267.1mg/L)。COD、NH+4-N、TN、NO-3-NNO-2-N5、6。2.3.1　对COD和NH+4-N去除的影响　　,,COD93.2%84.2%(5(a)),NH+4-N73.9%57.8%(5(b))。,COD,。,,DO,,BAF,[13]。5　CODNH+4-NFig.5　EffectofdifferentorganicloadingsonCODandNH+4-Nremoval2.3.2　对TN、NO-3-N和NO-2-N去除的影响0.32kg/(m3·d)0.73kg/(m3·d),TN,,0.73kg/(m3·d),TN60.5%(6(a)),TN46.3mg/L18.2mg/L,《》。NO-3-N,12.43mg/L2.91mg/L,NO-2-N(6(b)),。,COD,。10205　:6　TN、NO-3-NNO-2-NFig.6　EffectofdifferentorganicloadingsonTN、NO-3-NandNO-2-Nremoval3　。BAF。,,。,TN:(1)TN25.2%,。,0.5mg/L,,,110μm,,DO3mg/L/。DO,DO/,;,DONO-3-NNO-2-N,。(2),NH+4-NNO-3-N,,,NH+4-N[14]。(3)DO1mg/L,,[15]。,NH+4-N,NO-2-N,NO-2-NNH+4-N。(4)80cm,,。(5)DO,,TN,TN,,DO。、、。:,;,,,。,《》。,TN60%,57.8%,,。,,DO,。。4　　(1),COD110～145.5mg/L,NH+4-N20.3～28.9mg/L,TN23.5～33.5mg/L,HRT8h,10∶1。COD、NH+4-NTN92.5%、69.4%48.6%,《》,。,CODTN,NH+4-N。10214(2),。TN。0.73kg/(m3·d),COD、NH+4-NTN84.2%、57.8%60.5%。(3),TN。,50cm。(4)BAF,,,、、。[1],.(1).:,2002[2],,..,2004,30(1):4～7[3],,,..,2007,29(3):93～96[4],..,2005,25(2):214～217[5]Fdz-PolancoF.,MéndezE.,UrueñaM.A.,etal.Spatialdistributionofheterotrophsandnitrifiersinasubmergedbiofilterfornitrification.WaterResearch,2000,34(16):4081～4089[6]Hong-DuckR.,DaekeunK.,Heun-EunL.,etal.Nitrogenremovalfromlowcarbon-to-nitrogenwastewaterinfour-stagebiologicalaeratedfiltersystem.ProcessBiochemis-try,2008,43(7):729～735[7]OlavSliekersA.,DerwortN.,CamposGomezJ.L.,etal.Completelyautotrophicnitrogrenremovalovernitriteinonesinglereactor.WaterResearch,2002,36(10):2475～2482[8]KuaiLinping,VerstraeteW.Ammoniumremovalbytheox-ygen-limitedautotrophicnitrification-denitrificationsystem.AppliedandEnvironmentMicrobiology,1998,64(11):4500～4506[9],,.BAF.,2009,3(2):285～288[10]《》..,:,2002[11],,,..,1999,20(6):49～52[12],,..(),2005,28(4):374～378[13],,..,2009,31(5):57～64[14]IgorBodik.Nitrogenremovalinananaerobicbaffledfilterreactorwithaerobicpost-treatment.BioresourceTechnolo-gy,2003,86(1):79～84[15],,..,2005,21(3):17～211022