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INDUSTRIALWATER&WASTEWATERVol.42No.4Aug.,2011O/A1,2,3,3(1.,100120;2.,056038;3.,056002)、,,,,:,。O/A,、。,,,TN。20~26℃,:3m3/(m2·h)、3.5∶1,TN44%,TN15mg/L,O/A,。:;;;;:X703.1;X505:A:%1009-2455(2011)04-0034-04StudyondenitrificationperformanceofO/Atwo-stagebiologicalsandfilterZHAOJing1,TANGFeng-bing2,WANGBin3,FU-Min3(1.BeijingHuayuEngineeringCo.,Ltd.,Sino-coalInternationalEngineeringGroup,Beijing100120,China;2.CollegeofUrbanConstruction,HebeiUniversityofEngineering,Handan056038,China;3.HandanMunicipalWastewaterTreatmentCo.,Ltd.,Handan056002,China)Abstract:Asanutritionelementforalgae′sgrowth,nitrogencancauseeutrophicationwhentheconcen-trationistoohigh.UsingO/Atwo-stagebiologicalsandfiltertotreatsecondaryeffluentwaterfromanurbansewagetreatmentplant,theinfluencesofwatertemperature,hydraulicloadingandmassratioofcarbontonitrogenonthedenitrificationeffectwereinvestigated.Theresultsofthetestshowedthat,thedenitrificationperformanceofbiologicalsandfilterwasimprovedwiththeincreaseofwatertemperature,anddeclinedwiththeincreaseofhydraulicloading,theaverageremovalrateofTNincreasedgraduallywiththeincreaseofC/Nmassratio.Whenthewatertemperaturewas20-26℃,theoptimalcontrolparametersofthetestwasdeterminedasfollows:thehydraulicloadingwas3m3/(m2·h),themassratioofcarbontonitrogenwas3.5∶1.Undertheabovecondition,theaverageremovalrateofTNreachedabove44%,themassconcentrationofTNintheeffluentwaterwaslowerthan15mg/L.Itcouldbeseenthat,O/Atwo-stagebiologicalsandfiltrationprocesscouldgetagooddenitrificationeffect,whichwasatechnologyforwastewateradvancedtreatmentwithabroadapplicationprospect.Keywords:biologicalsandfilter;watertemperature;hydraulicloading;massratioofcarbontonitrogen;denitrification:2011-07-05;:2011-07-13·34·[1]。,。、,,。,(MBR)、(BAF)、-。,[2]。,O/A,,O/A,。11.11。、,120mm,2000mm,,1200mm,300mm,500mm,。。2,400mm,400mm,,,。,,,。。O/A。2,2(),,。1.2,0.6~1.2mm,0.8mm,K80<2.0。1.3,1。1.4,,,、、。,:10L/(m2·s)、2min,4L/(m2·s)、10L/(m2·s)、4min,8L/(m2·s)、4min,24~48h。1.5《》()[3],pH;;SS;CODCr;NH3-N;;-。22.1pH6.7~7.9,3∶1、1Fig.1Testapparatus1Tab.1RawwaterqualityindexespH6.7~7.9/℃10~26ρ(CODCr)/(mg·L-1)30~51ρ(SS)/(mg·L-1)ρ(NH3-N)/(mg·L-1)41ρ(TN)/(mg·L-1)6~23145.7~12.58.920.23~25.6022.31,,,:O/A·35·INDUSTRIALWATER&WASTEWATERVol.42No.4Aug.,20113.0m3/(m2·h)、3.5∶1,2。2,,O/A、、。10~15℃16~20℃,7.54%,8.37%;16~20℃21~26℃,4.14%,6.32%。,,。,,。,[4],,,,。,,,,,。2.2pH6.7~7.9,20~26℃、3∶1、3.0m3/(m2·h)、3.5∶1,2。2,2.0m3/(m2·h)3.0m3/(m2·h),TN4.98%,4m3/(m2·h),TN6.5%。,,。,,,TN;,、,,,,。2.3CODCrpH6.7~7.9,20~26℃,3∶1,3.0m3/(m2·h),3。[5-6]。3,,。,,。,,,,TN。2.5∶13.5∶1,TN6.29%,44.27%,TN15mg/L;3.5∶14.0∶1,TN1.94%;2Fig.2Influenceofwatertemperatureondenitrificationperformanceofbiologicalsandfilter 13579111315/ρB/(mg·L-1)302520151050/%70605040302010010~15℃16~20℃21~26℃2Tab.2Influenceofhydraulicloadingondenitrificationperformanceofbiologicalsandfilter/(m3·m-2·h-1)23421.8620.2722.9211.1211.3214.2913.1011.8212.127.167.258.586.767.548.262.973.414.3349.1344.1537.65ρ()/(mg·L-1)ρ()/(mg·L-1)ρ()/(mg·L-1)/%56.0745.3454.7738.6647.5829.21/%/%·36·4.5∶1,TN1.29%。,TN,,,。,,CODCr。CODCr4。4,,CODCr,。2.5∶1、3.5∶14.0∶1,CODCr39.54、45.7048.89mg/L,4.5∶1,CODCr54.79mg/L。,3.5∶1,,TN。、CODCr,3.5∶1。3(1)、O/A,,;,;,。(2)20~26℃,3∶1,3.0m3/(m2·h),3.5∶1,O/A。TN44%,TN15mg/L,CODCr45.7mg/L,GB18918—2002《》A。(3)O/A,,。:[1],,.[J].,2006,37(3):12-15.[2],.[J].,2004,11(1):15-17.[3].()[M].:,2002.[4]Metalf,EddyInc.WastewaterEngineeringTreatmentandReuse(fourthedition)[M].:,2003.[5]MichaudL,BlanchetonJP,BruniV.Effectofparticulateorganiccarbononheterotrophicbacterialpopulationsandnitrificationefficiencyinbiologicalfilters[J].AquaculturalEngineering,2006,34(3):224-233.[6]JettenMSM,WagnerM,FuerstJ,etal.Microbiologyandapplicationoftheanaerobicammoniumoxidation('anammox')process[M].London:IWAPublishing,2001.:(1975-),,,,,,()zj0312@163.com。 147101316/ρ(CODCr)/(mg·L-1)8060402002.5∶13.5∶14.0∶14.5∶14CODCrFig.4Influenceofcarbon-nitrogenmassratiooneffluentCODCr3Fig.3Influenceofcarbon-nitrogenmassratioondenitrificationperformanceofbiologicalsandfilter 147101316/ρB/(mg·L-1)302520151050/%7060504030201002.5∶13.5∶14.0∶14.5∶1,,,:O/A·37·
本文标题:OA两级生物砂滤工艺脱氮效果研究赵靖
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