低CN冲击对A2O处理功能影响及修复方法研究戴兴春

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160   Vol.35 No.11 2009C/NA2/O戴兴春1,2 高 岩2 陈 曦2 朱 勇2 黄民生2 王国华3(1, 211400;2, 200062;3, 200092)   研究了低C/N对A2/O系统产生的冲击效应及修复方法。结果表明,C/N为2时对系统冲击效应明显,可使系统硝化功能、CODCr去除率和TP去除率分别下降40%、50%和30%,同时会导致少量污泥上浮和产生轻微污泥膨胀问题;而采用加大回流比(R和r都提高2倍)的修复方法可显著增强系统处理功能,修复期NH3—N平均去除率可提高20%,TN平均去除率提高约7.4%,CODCr平均去除率提高约5.4%。并且加大回流比可有效缩短修复运行时间,使系统的NH3—N、TN和CODCr去除功能提前约3~4d恢复。 A2/O 低C/N 冲击 修复 污泥回流比  A2/O[1~4]。。Malgorzata[5]C/N4~13.4,;Choi[6],C/N10;[7],C/N≤3,。,A2/OC/N3~4。C/N[8],,,[9~11],,C/NA2/O,。,C/NA2/O,。(2007-007)。1 1.1 2A2/O(1),AB;,2。2.4L/h,DO2~4mg/L,F/M0.12gBOD5/(gMLSS·d),(R)200%,(r)50%,SRT15d,2.5h,1 参考文献1 ,,,..,2003,22(11):1165~11712 ,..,2004,23(5):480~4843 ,,..,2002,18(2):91~924 .:[].:,2005  &:12401090:13704278589E-mail:Litaosheji@163.com:2009-03-12:2009-08-26DOI:10.13789/j.cnki.wwe1964.2009.11.014 Vol.35 No.11 2009161  22~25℃。1.2 ,1。1 pHCODCr/mg/LNH3—N/mg/LTN/mg/LNO-3-N/mg/LTP/mg/L7.8~8.48180~22020018~242138~42400.2~0.60.41~421.3 NH4ClC/N。NH4Cl,,,,。,C/N2(NNH3—N)。1.4 20071274,48h,24h48h,。20071294,BrR1∶11∶4,A,。10d,,20071218B,。1.5 (1)CODCr:;NH3—N:;NO-3—N:;TN:[12]。(2):,,20℃、DO1mg/L,MLSS,[13,14];,0.5mg/L(ATU),[15,16],,;,(NaClO3),[17,18]。2 2.1 2.1.1 NH3—NA2/O,NH3—N90%,NH3—N1mg/L,A2/O(2)。2 NH3—NC/N2,NH3—N50~60mg/L,40%,;,BNH3—NA20%,8dNH3—NNH3—N,A11d。SPSS(13.0)NH3—N,2。F244.682,2.687,P0.000.01,A2/O;F9.221,4.747,P0.010.05,BA,NH3—N。2 NH3—NSSdfMSFP-valueFcrit  11745.69 36.90 48.0212112978.8136.90 4.00244.682 9.2210.0000.0102.6874.7472.1.2 (OUR)OUR34。,C/N,。OUROUR,OUROUR,162   Vol.35 No.11 2009NO-2—N。(34):OURF2.5865.318,P0.1460.05,OURF0.6325.318,P0.4500.05,;,NH3—N。3 OURSSdfMSFP-valueFcrit  1.7700.0340.1068180.2210.0340.01316.6832.5860.0000.1463.4385.3184 OURSSdfMSFP-valueFcrit  0.7100.0020.0298180.0890.0020.00424.7420.6320.0000.4503.4385.3182.2 TN5TN。5 TN5,TN60%,TN20mg/L,《》(GB18918—2002)B,。C/NTNNH3—N,TN,TNNH3—N,BTN11d,8,NH3—N,[19],,A2/O。BTNA7.4%,;5,F56.9853.787,P0.01;F26.4515.591,P0.0010.01,TN。5 TNSSdfMSFP-valueFcrit  3301.85 218.80 57.96717471.70218.80 8.2856.98526.4510.0000.0013.7875.5912.3 CODCr6CODCr80%,CODCr50mg/L,GB18918—2002B。 Vol.35 No.11 2009163  6 CODCrC/N,CODCr40%,CODCr,140mg/L,C/N,。CODCr,BCODCr5d,A5.4%,A8d。SPSS(6),F15.4833.179,P0.01,A2/O;F8.5095.117,P0.0170.05,CODCr。6 CODCrSSdfMSFP-valueFcrit  1229.1975.1979.62919136.57775.1888.84715.4838.5090.0000.0173.1795.1172.4 7,A2/OTP60%,C/N,TP,,,TP30%,,C/N,。,TP,,。SPSSTP(7):F2.772,7 TP5.317,P0.1340.05,95%,。,。7 TPSSdfMSFP-valueFcrit  1668.65066.928193.147818208.58166.92824.1438.6392.7720.0030.1343.4385.3182.5 8 SVI8,SVI80mL/g。C/N,SVI,150mL/g,,,C/N。,BMLSS,N,,,。,BSVIA,MLSS;2,SVI(8),164   Vol.35 No.11 2009。3 ,C/N,A2/O,A2/O,,:(1)MLSS,N,N。(2),,,()。(3)NO-3—NNO-2—N,,N。4 (1)C/N2A2/O,40%,CODCr50%,TP30%;。(2)A2/O,(Rr2),,(),NH3—N20%,TN7.4%,CODCr5.4%;,NH3—N、TNCODCr3~4d。(3),。参考文献1 ElefsiniotisP,LiD.Theeffectoftemperatureandcarbonsourceondenitrificationusingvolatilefattyacids.BiochemicalEngineeringJournal,2006,28:148~1552 vanLoosdrechtMCM,JettenMSM.Microbiologicalconversionsinnitrogenremoval.WaterScienceandTechnology,1998,38(1):1~73 SponzaDT,AtalayH.InfluenceofnitrateandCODCronphosphorus,nitrogenanddinitrotoluene(DNT)removalsunderbatchanaerobicandanoxicconditions.Anaerobe,2004,10:287~2934 DingYW,WangL,WangBZ,etal.RemovalofnitrogenandphosphorusinacombinedA2/O-BAFsystemwithashortaerobicSRT.JournalofEnvironmentalSciences,2006,18(6):1082~10875 MalgorzataKK,HannaHM,EugeniuszK.Factorsaffectingthebiologicalnitrogenremovalfromwastewater.ProcessBiochemistry,2006,41:1015~10216 ChoiCK,LeeJK,LeeKH,etal.Theeffectsonoperationconditionsofsludgeretentiontimeandcarbon/nitrogenratioinanintermittentlyaeratedmembranebioreactor(IAMBR).BioresourTechnology,2008,99(13):5397~54017 ,,.CODCrC/N.,2005,21(12):19~238 ,,.SBR.,2001,27(5):55~589 ,,,..,2007,28(8):1881~188810 ,,,.、A2/O.,2006,22(23):18~2111 ,,,..,2005,6(11):46~5012 ..4.:,200213 EPA-821-R-01-014,Specificoxygenuptakerateinbiosolids.Method168314 ,,,..,2005,26(4):124~12815 ,..:,2002.244~24516 ,,,..,2007,28(8),1882~188817 KroissH.Nitrificationinhibition—asourceidentificationmethodforcombinedmunicipaland/orindustrialtreatmentplants.WaterScienceandTechnology,1992,26:1135~114618 ,,,.(OUR).,1999,19(3):225~22919 ..:,1994.43~59  &E-mail:mshuang@des.ecnu.edu.cn:2009-03-12

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