DOSUFR张瑞雪1, 向 来2, 季铁军3(1.贵州大学喀斯特环境与地质灾害防治教育部重点实验室,贵州贵阳550003;2.天津绿通环保工程设备开发有限公司,天津325105;3.重庆大学城市建设与环境工程学院,重庆400045) : 采用螺旋升流式反应器(SUFR)处理生活污水,考察了好氧反应池中DO浓度对其同步硝化反硝化的影响。结果表明,在好氧反应池上部溶解氧浓度为3.0~3.5mg/L时,发生了明显的同步硝化反硝化现象,其对TN的去除量占SUFR系统对TN去除总量的16%左右;好氧反应池中的同步硝化反硝化反应只发生在池的下部,其中、上部只进行了好氧硝化反应;SUFR系统中好氧反应池上部的最佳溶解氧浓度范围为3.0~3.5mg/L,此时系统的硝化和反硝化效果最佳,好氧反应池中的脱氮效果也较好,系统对TN的去除率84%。 :(50378095) : 螺旋升流式反应器; 生物脱氮; 同步硝化反硝化:X703.1 :C :1000-4602(2007)07-0070-04EffectofDOConcentrationonSimultaneousNitrificationandDenitrifica-tioninSpiralUp-flowReactorSystemZHANGRui-xue1, XIANGLai2, JITie-jun3(1.MOEKeyLaboratoryofKarstEnvironmentandGeologicalHazardPrevention,GuizhouUniversity,Guiyang550003,China;2.TianjinLvtongEnvironmentProtectionEngineeringEquipmentDevelopmentCo.Ltd.,Tianjin325105,China;3.FacultyofUrbanConstructionandEnvironmentalEngineering,ChongqingUniversity,Chongqing400045,China) Abstract: Thespiralup-flowreactor(SUFR)wasusedtotreatdomesticwastewater.TheeffectofDOconcentrationonsimultaneousnitrificationanddenitrification(SND)intheaerobicreactorwasinves-tigated.Theresultsshowthat:①WhenDOconcentrationintheupsideoftheaerobicreactoris3.0mg/Lto3.5mg/L,obviousphenomenonofsimultaneousnitrificationanddenitrificationoccursintheaerobicreactor.TheproportionofSNDnitrogenremovalinthetotaldenitrifyingnitrogenremovalisabout18%;②TheSNDphenomenononlyoccursinthebottomofaerobicreactorinsteadofthetop;③Thefa-vorableDOintheupsideoftheaerobicreactorisremainedas3.0mg/Lto3.5mg/L.Atthislevel,theSUFRsystemcanobtainfavorablenitrification-denitrificationandthenitrogenremovalefficiencybySNDintheaerobicreactorisalsobetter.TheremovalefficiencyofTNinSUFRsystemisabove84%. Keywords: spiralup-flowreactor; biologicalnitrogenremoval; simultaneousnitrificationanddenitrification·70·23 720074 CHINAWATERWASTEWATER Vol.23No.7Apr.2007 (SUFR)[1],,DO。1 试验装置与方法1.1 1。1 Fig.1 SchematicdiagramofSUFR SUFR、、4,3、,、、,、。385L,0.13m,1.20m,16L;0.19m,0.85m,24L;0.19m,1.60m,45L。,9L/h,(HRT)9h,(SRT)15d,40%~60%,200%~250%,100%~150%。1.2 ,、COD,60%。SUFR:COD250~450mg/L、TN37.24~55.67mg/L、NH+4-N30.28~46.54mg/L、PO3-4-P4.57~8.04mg/L、TP5.42~8.89mg/L,DO3.0~3.5mg/L,15~25℃。1.3 CODHachDr/2010COD;PO3-4-P;TP—;NH+4-N;NO-3-N;TN—。2 结果与讨论2.1 ,NH+4-N37.0mg/L(TN42.0mg/L),DO3.0~3.5mg/L,SUFR,,TN2。2 SUFRFig.2 RemovaleffectofTNindifferentreactorsofSUFRsystem 2,TN37.24~45.42mg/L,TN12.46mg/L,TN6.81mg/L,5.65mg/L,,TNSUFRTN16%。2,TNTN,,,、。、,0.5~1.0mg/L,。,0.5~1.0mm,·71·:DOSUFR23 7(0.1mm)5~10,,,[2]。2.2 DOSUFR,DO,,3,1。1 DOTab.1 DOconcentrationinaerobicreactoratdifferentoperationconditionsmg·L-1Ⅰ(1~20)Ⅱ(21~40)Ⅲ(41~60)DO4.5~5.03.0~3.51.5~2.0DO1.5~2.00.5~1.00.2~0.52.2.1 ⅠⅠ,2。2 ⅠTab.2 VariationofnitrogenconcentrationinsystematconditionⅠmg·L-132.55~43.1238.270.36~0.980.5337.44~48.9543.1116.89~25.7421.150.62~1.781.1920.48~29.3426.656.37~12.228.564.98~9.327.0812.23~20.7117.590.01~0.120.0710.67~19.2116.0311.05~19.4716.490.01~0.130.0711.13~20.3416.1711.76~21.6716.51 2,NH+4-N0.07mg/L,16.1716.51mg/L,,4.5~5.0mg/L,,,,61.7%。,2,1.10mg/L,,4.13%。:①,,,。②DO,,[3]。2.2.2 ⅡⅡ,3。3 ⅡTab.3 VariationofnitrogenconcentrationinsystematconditionⅡmg·L-132.12~40.8637.410.36~1.160.5737.24~45.4242.3814.57~21.6918.950.07~0.430.2418.87~25.8322.566.55~13.169.761.08~2.141.5210.19~15.6413.380.06~0.880.694.11~7.695.834.74~8.726.850.05~0.790.574.21~7.735.874.58~8.196.73 3,NH+4-N0.57mg/L,5.876.73mg/L,,3.0~3.5mg/L,SUFR,84.12%。,3,6.53mg/L,18.32%,。2.2.3 ⅢⅢ,4。·72·23 7 ⅢTab.4 VariationofnitrogenconcentrationinsystematconditionⅢmg·L-134.22~45.3738.150.43~1.260.7439.62~50.0844.2620.55~30.6926.110.03~0.350.1724.68~33.9429.7311.21~21.0816.340.78~2.691.3415.19~25.5822.815.34~13.779.582.09~5.984.0810.69~19.7615.124.96~13.259.212.52~6.164.1110.76~20.1114.83 4,NH+4-N9.21mg/L,4.1114.83mg/L,66.5%,62.1%,27.71%。Ⅰ、Ⅱ,,。4,1.5~2.0mg/L,,,26.13%。,Ⅱ,NO-3-NNO-2-N,,,。,SUFR,,Ⅱ,,。2.3 DO,,3。 3,DO1.5~2.0mg/L,,;DO3.0mg/L,,,DO4.5~5.0mg/L,。,,,。3 DOFig.3 VariationofammoniaandnitrateinsystemeffluentsatdifferentDOconcentrations3 结论① 3.0~3.5mg/L,,TNSUFRTN16%。② ,、。③ SUFR3.0~3.5mg/L,,,TN84%。:[1] ,,,.[J].,2004,24(1):15-19.[2] KlangduenPochana,JurgKeller.Studyoffactorsaffectingsimultaneousnitrificationanddenitrification(SND)[J].WaterSciTechnol,1999,39(6):61-68.[3] SenPriyali,DentelStevenK.Simultaneousnitrification-denitrificationinaFluidizedBedReactor[J].WaterSciTechnol,1998,38(1):247-254.E-mail:zhangxuer7908@126.com:2006-10-16·73·:DOSUFR23 7