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/1,2,2,3(1.,213164;2.,150090;3.,213163):,/,/99.99%,0.2mg/L/pH,;1/10,/0.5h2,1.5h6h;,1h6h,:;;:X703:C:1000-4602(2009)23-0082-03:(HIT.NSRIF.2008.65);(53)ComparisonofAmmoniaNitrogenRemovalbyOrganicCompositeDenitrificationAgent/Air2strippingandTraditionalAir2strippingLEIChun2sheng1,MAJun2,GUANXiao2hong2,WANGGui2yu3(1.DepartmentofEnvironmentalandSecurityEngineering,JiangsuPolytechnicUniversity,Changzhou213164,China;2.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;3.ChangzhouWujinYoubangWaterPurificationMaterialsCo.Ltd.,Changzhou213163,China)Abstract:Anorganiccompositedenitrificationagentcomposedofethyllactatewasprepared,andtheremovaleffectofammonianitrogenbyorganiccompositedenitrificationagent/air2strippingwascom2paredwiththatbytraditionalair2strippingmethod.Theresultsshowthattheremovalrateofammoniani2trogenbyorganiccompositedenitrificationagent/air2strippingisabove99.99%,theconcentrationofre2sidualammoniais0.2mg/L.ItsoptimalpHislowerthanthepHoftraditionalair2stripping,savingthealkaliadditionvolume.Anditsoptimalgas2liquidratioisonly1/10ofthetraditionalair2stripping,sav2ingenergyconsumptiongreatly.Theaveragestrippingvelocityoftheorganiccompositedenitrificationa2gent/air2strippingduringthefirsthalfhouris2timesofthetraditionalair2stripping.Underthenormaltemperaturecondition,theremovalrateofammonianitrogenbyorganiccompositedenitrificationagent/air2strippingtreatingfor1.5hishigherthanthatbythetraditionalair2strippingtreatingfor6h,andun22523200912CHINAWATER&WASTEWATERVol.25No.23Dec.2009700128dertheheatingcondition,theremovalrateofammonianitrogenbyorganiccompositedenitrificationa2gent/air2strippingtreatingfor1hishigherthanthatbythetraditionalair2strippingtreatingfor6h,sothetreatingtimeisdecreasedgreatly.Keywords:ammonianitrogen;air2stripping;organiccompositedenitrificationagent,,[14],,,,1111,pH8.52NTU29856mg/LCOD5987mg/L112:ACOpH722:NaOH()NH4Cl()KOH()KI()HgCl2()11312(61,2,1,2/,20L,10cm),NaOHpH,1mL500mL,2,,2,()2211pH29856mg/L,pH,6000,1mL,303h,pH,,pH,pH10,,;pH11,,pH11,90%;pH12,,pH12,95.67%20L1mL,pH9,99.80%;pH11,99.99%,/pH11pH9,,,212pH123h6000,,,30,94.74%,,,,30,,[2]/,,99.86%,45,99.99%,45213pH12303h,,6000,/600,/1/10,(56%),563:/2523.22988mg/L31mg/L,214pH=123045/6000600,,12130Tab.1Effectofstrippingtimeonammoniaremovalat30/h//(mgL-1)/(mgL-1h-1)/%/(mgL-1)/(mgL-1h-1)/%0.5126403443257.6665404663278.09176281002474.4514561016895.121.54689587884.29794132497.3422998338289.96290100899.032.51903219093.639838499.673156966894.7433.612999.894145411595.1310.92399.965134610895.495.8599.98612747295.732499.99245Tab.2Effectofstrippingtimeonammoniaremovalat45/h//(mgL-1)/(mgL-1h-1)/%/(mgL-1)/(mgL-1h-1)/%0.5148632998650.2217195627494.24184371285271.74732.41973.297.551.55186650282.6385.61293.699.7123315374288.9012.2146.899.962.52104242292.954.615.299.983173573894.192.34.699.994160812794.610.81.599.995148812095.020.40.499.99614088095.280.20.299.991,,6h1274mg/L,53%;,62mg/L,99.99%,,0.5h,/2,3h,668mg/(Lh),/129mg/(Lh)2,45,6h,/0.2mg/L,(1408mg/L)/0.5h23h,,;3h99.99%,3h,0.2mg/L3/99.99%,0.2mg/L/pH,/1/10,/0.5h2,1.5h6h;,1h6h,:[1],.[J].,2007,27(4):54-60.[2],,,.[J].,2007,375(9):101-102.[3],.[J].,2001,2(2):59-63.[4],,.[J].,2002,28(5):291-292.:13921033438E-mail:qiuyu_lei@126.com552523