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0，，[1]，[2]。，[3]，[4]。[5]，（60min）[6]；，、、[7]。，MENDOZAE[8]2～3.2mm，3～6mm。2，（sCODCr），NH4+-N，2（、4.5×1025.4×102kg/m3），。121.5100002.510640：2、4.5×1025.4×102kg/m3sCODCrNH4+-N、。2sCODCrNH4+-NsCODCrNH4+-NNH4+-NsCODCr。：:X2:B:1004－8642（2008）06－0009－04：2008-08-28：1976－、.EffectsofShort-timeHydraulicLoadingonOrganicConcentrationsinBAFwithDifferentSizeDistributionMediaLINGXiao，HUYong－youAbstract：ThroughthecomparisonoftheremovalrateofsCODCr,NH4+-Nandturbidityintwobiologicalaeratedfilterswithtwodifferentparticlesizemedia(stackingdensityofbigandsmallsizeare4.5×1025.4×102kg/m3),theeffectofshort-timehydraulicloadingandorganicsloadingontheperformanceofBAFwerestudied.Theresultsshowshort-timehydraulicloadinghasnoinfluenceontheremovalofsCODCrandNH4+-N,butdecreasestheturbidityremoval,whichprovesBAFisfittedfordifferenthydraulicloading;short-timesCODCrandNH4+-NloadinghassevereinfluenceontheremovalofsCODCrandNH4+-N,buttheperformancereturnstothenormallevelafternoimpactloading;inawordtheBAFwithbigparticlesizemediahasbetterperformanceinNH4+-Nthanthatwithsmallparticlesizemedia,buttheBAFwithsmallparticlesizemediahasbetterperformanceinsCODCrandturbidity.Keywords：Biologicalaeratedfilter(BAF)LowconcentrationdomesticwastewaterShort-timehydraulicloadingShort-timeorganicsloading216200812EnvironmentalScienceandTechnologyVol．21No．6Dec．2008200812200812200812UBAF-1UBAF-23mm0.001.003~4mm26.7051.004~5mm34.3024.005~6mm38.0024.006mm1.000.00450540/%/(kg·m-3)ρ（sCODCr）/(mg·L－1）sCODCr/%a.2004-05-21b.2004-05-22c.2004-05-23ttt11.12(UpflowBiologicalAeratedFilter,UBAF)（1），150mm，3.50m，2.00m，2（1）。，；。111.25m3/(m2·h),3mg/L。1，8:0016:00，1h1，8:009:00。。3，7.5,1012.5m3/(m2·h)。3，sCODCr60.29,99.73,160.27mg/L，NH4+-N13.57,31.42,31.05mg/L，sCODCrNH4+-N。1.3COD,XJ-1;,TU-1800SPC;,HACH-2100P;,ORION-835A。1.4sCODCr0.45μm；NH4+-N；。22.1UBAF2.1.1sCODCr2，7.5,1012.5m3/(m2·h)，sCODCr，sCODCr67.18%,54.65%39.43%67.45%,67.45%39.98%。sCODCr65.64%,26.65%36.36%61.91%,57.12%30.01%。。，sCODCr。sCODCr，，。2sCODCr2.1.2NH4+-N3，，NH4+-N，NH4+-N。1012.5m3/(m2·h)1h，NH4+-N82.89%92.05%78.71%75.15%，。，4，ρ（sCODCr):ρ（NH4+-N)5，NH4+-NsCODCr，NH4+-N，，。UBAF-2UBAF-1UBAF-1UBAF-2UBAF-1UBAF-2102162162163NH4+-N4ρ（sCODCr）：ρ（NH4+-N）NH4+-N2.1.35，，。7.5，1012.5m3/(m2·h)1h，86.25%,68.18%62.92%76.08%,47.14%50.17%。86.76%，65.44%70.07%76.25%，50.95%39.92%，，。。52.2UBAF2.1.1sCODCr6，sCODCr60.29mg/L1h，sCODCr45.99%47.37%。sCODCr99.73mg/L1h，sCODCr36.10%38.23%。sCODCr160.27mg/L1h，sCODCr11.48%23.30%。sCODCr。，，。。6sCODCr2.1.2NH4+-N7，NH4+-N13.57mg/L1h，NH4+-N85.92%88.65%。NH4+-N31.42mg/L1h，NH4+-N51.27%47.39%。NH4+-N31.05mg/L1h，NH4+-N49.66%43.35%。NH4+-N。8，ρ（sCODCr）：ρ（NH4+-N）3.17（20045259:00），NH4+-N51.27%47.39%。5.16（20045269:00），NH4+-N49.66%43.35%，NH4+-Nρ（sCODCr）：ρ（NH4+-N）。ρ（NH4+-N）/(mg·L－1）NH4+-N/%a.2004-05-21b.2004-05-22c.2004-05.23tttρ（NH4+-N）/(mg·L－1）ρ（sCODCr）:ρ（NH4+-N）a.2004-05-21b.2004-05-22c.2004-05-23ttta.2004-05-21b.2004-05-22c.2004-05-23ttta.2004-05-21b.2004-05-22c.2004-05-23tttρ（NH4+-N）/(mg·L－1）NH4+-N/%UBAF-1UBAF-2UBAF-1UBAF-2UBAF-1UBAF-2ρ（sCODCr）：ρ（NH4+-N）UBAF-1UBAF-2UBAF-1UBAF-2UBAF-1UBAF-2UBAF-1UBAF-2/NTU/％11200812200812200812UBAF-1UBAF-27NH4+-N8ρ（sCODCr)∶ρ（NH4+-N)NH4+-N2.1.39，，。93（1）sCODCrNH4+-N，，。（2）sCODCrNH4+-N，，。（3）NH4+-N，sCODCr，。[][1]DROSTERL.Theoryandpracticeofwaterandwastewatertreatment[M].JohnWiley&Sons,USA,1997.[2]WOOLARDCR.Theadvantagesofperiodicallyoperatedbiofilmreactorsforthetreatmentofhighlyvariablewastewater[J].WaterSciTechnol,1997(35):199-206.[3]POLANCOF,GARCIAP,VILLAVERDES.Adsorptionanddiffusioneffectsontheresidencetimedistributionofsubmergedbiofilters[J].EnvironTechnol,1996(17):687-696.[4]CHENS,CHANGS.Theenhancementofnitrificationbyindirectaerationandkineticcontrolinasubmergedbiofilmreactor[J].WaterSciTechnol,1994(30):131-142.[5]GILLESP.IndustrialscaleapplicationsoffixedbiomassontheMediterraneanseaboard.Designoperatingresults[J].WaterSciTechnol,1990(22):281-292.[6]DESBOSG,ROGALAF,SIBONYJ,etal.Biofiltrationasacompacttechniqueforsmallwastewatertreatmentplants[J].WaterSciTechnol,1990(22):145-152.[7]BOLLERM,TSCHUIM,GUJERW.Effectsoftransientnutrientconcentrationsintertiarybiofilmreactors[J].WaterScienceandTechnology,1997,36(1):101-109.[8]MENDOZA-ESPINOSALG,STEPHENSONT.Organicandhydraulicshockloadingsonabiologicalaeratedfilter[J].EnvironmentalTechnology,2001,22(3):321-330.[9]HOLLADAYDW,HANCHERCW,SCOTTCD,etal.Biodegredationofphenolicwasteliquorsinstirred-tank,packed-bedandfluidized-bedreactors[J].WaterPollutControlFed,1978(50):2573-2598.[10]ADACHIS,FUCHUY.Reclamationandreuseofwastewaterbybiologicalaeratedfilterprocess[J].WaterSciTechnol,1991(24):195-204.(）a.2004-05-21b.2004-05-22c.2004-05-23tttρ（NH4+-N）/(mg·L－1）NH4+-N/%tttρ（NH4+-N）/(mg·L－1）ρ（sCODCr)∶ρ（NH4+-N)ttt/NTU/%UBAF-1UBAF-2UBAF-1UBAF-2a.2004-05-21b.2004-05-22c.2004-05-23UBAF-1UBAF-2UBAF-1UBAF-2a.2004-05-21b.2004-05-22c.2004-05-23ρ（sCODCr)∶ρ（NH4+-N)12