不同回流比对UBAF脱氮性能的影响李思敏

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INDUSTRIALWATER&WASTEWATERVol.41No.1Feb.,2010UBAF,,(,056038),、,、、,。(BAF),,[1-3]。BAFA/OBAF,,[4]。BAF、。:;(07276713D):2009-10-16;:2009-11-27:(UBAF),,COD、TN、NH3-N。:100%300%,CODNH3-N,400%,CODNH3-N;TN,TN,200%,TN;200%,COD、NH3-NTN92.53%、93.50%79.79%,COD、NH3-NTN17.70、2.1211.36mg/L,《》(GB18918—2002)。:;;;:X505;X703:A:%1009-2455(2010)01-0028-04InfluenceofrefluxratioonnitrogenremovalperformanceofUBAFLISi-min,CHENLi-na,MIAOBao-fen(CollegeofUrbanConstruction,HebeiUniversityofEngineering,Handan056038,China)Abstract:Thenitrogenremovalperformanceofup-flowbiologicalaeratedfilter(UBAF)pre-denitrificationprocessinmunicipalwastewatertreatmentwasstudiedandtheremovalefficienciesofCOD,TNandNH3-Natdifferentrefluxratioswereinvestigated.Theresultsshowedthat:theremovalratesofCODandNH3-Nincreasedslowlywhentherefluxratioincreasedfrom100%to300%,however,whentherefluxratioincreasedto400%,theremovalratesoftheabovetwopollutantsbegantodecrease.TherefluxratiohadasignificantinfluenceonTNremovalandtheincreasingofrefluxratiowasofbenefittoTNremovalwithinacertainrange.ThehighestremovalrateofTNwasobtainedatrefluxratioof200%,andunderthesaidoptimalrefluxratio,theaverageremovalratesofCOD,NH3-NandTNbythesystemreached92.53%,93.50%and79.79%respectively,theaveragemassconcentrationofCOD,NH3-NandTNineffluentwaterwere17.70,2.12and11.36mg/Lrespectively.Theeffluentqualitymetthespecificationforgrade1inDischargestandardofpollutantsformunicipalwastewatertreatmentplant(GB18918—2002).Keywords:up-flowbiologicalaeratedfilter;pre-denitrification;refluxratio;nitrogenremovalperformance!!!!!!!!!!!!!!!!!!!!!!!!·28·(UBAF),,1∶3,1.27m/h,3∶1,100%、150%、200%、300%400%,COD、NH3-NTN。11.11。1、2、3,200mm,2000、2000、3000mm,250mm,500mm,1、21000mm,32000mm。。1,2、3。3,。,1。1.2,2。《》()。1.3,,,。15L/h24h,3,。3d,,15L/h,2∶1,100%,;5d,20L/h,COD、NH3-N。CODNH3-N75%,,,,;,,、、,,20d。21∶3,20~28℃,1.27m/h,3∶1,COD、NH3-N、TN。2.1COD,,UBAFCOD2。2,100%、150%、200%、300%,UBAFCOD89.23%、91.45%、92.53%、92.70%,1Tab.1Performanceparametersofceramisitesfiller/mm/(g·cm-3)/%/(g·cm-3)3~51.5255~750.75~0.80/(m2·m-3)w(SiO2)/%w(Al2O3)/%w(Fe2O3)/%398062~6818~226~92Tab.2Qualityofrawwaterduringtheexperimentalperiod/℃pHρ(COD)/(mg·L-1)20~287.12~7.88168.9~389.225.67.34257.22ρ(NH3-N)/(mg·L-1)ρ(TN)/(mg·L-1)17.1~47.334.0~73.730.9351.48,,:UBAF·29·INDUSTRIALWATER&WASTEWATERVol.41No.1Feb.,2010COD28.08、21.58、17.7019.82mg/L;400%,UBAFCOD91.53%,COD24.18mg/L,。,COD。100%300%,COD。,COD;,,,,,,,,;,,,,,COD。400%,COD,,,,,,,COD;,,,COD。2.2NH3-N,UBAFNH3-N3。3,100%、150%、200%、300%,UBAFNH3-N89.85%、91.67%、93.50%、94.93%,,NH3-N2.98、2.58、2.121.73mg/L;400%,UBAFNH3-N91.86%、NH3-N2.45mg/L,。,NH3-N。,NH3-N,NH3-N,;,CODUBAF,,NH3-N,,,NH3-N;,,,,,,,。,,,,COD,,,,NH3-N;,,,,,,NH3-N。2.3TN,,UBAFTN4。·30·4,100%、150%、200%,UBAFTN62.46%、69.1%、79.79%,TN18.04、15.61、11.36mg/L;,300%,UBAFTN71.65%,TN14.17mg/L,,TN,400%,UBAFTN65.03%,TN17.35mg/L。100%200%,TN62.46%79.79%,,300%,TN71.65%,。,,;,,,[5]。,,,,;,、,,NO3--N。[6]。。,TN,:①TN,,2%~5%[7]。②UBAF,,、、,,,,,。,UBAF。③,,。3(1)UBAFCODNH3-N,CODNH3-N;CODNH3-N,400%,CODNH3-N。(2)UBAFTN,。:200%,TN,UBAFTN79.79%、TN11.36mg/L。(3)UBAFBAFA/O,,200%,COD、NH3-NTN92.53%、93.50%79.79%,COD、NH3-NTN17.70、2.1211.36mg/L,《》(GB18918—2002)。:[1]JJChen,DMcCarty,DSlack,etal.Fullscalestudiesofsimplifiedaeratedfilter(BAF)fororganicandanitrogenremoval[J].WatSciTech,2000,41(4):1-4.[2]RosaMorsyleideF,FurtadoAngelaAL,AlbuquerqueRicardoT,etal.Biofilmdevelopmentandammoniaremovalinthenitrificationofasalinewastewater[J].BioresourceTechnology.1998,65(1-2):135-138.[3]RPujol,STarallo.Totolnitrogenremovalintwo-stepbiofiltration[J].WatSciTech,2000,41(4-5):65-68.[4],.BAF[J].,2004,27(6):47-49.[5],.(1)[M].:,1992.[6],,.[J].,2008,2(2):220-224.[7].[M].:,1996.:(1968-),,,,,,()0310-7428748()chyeLi@126.com。,,:UBAF·31·

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