AO2SBR同步脱氮除磷的研究

4　2环境工程学报Vol.4,No.220102ChineseJournalofEnvironmentalEngineeringFeb.2010(AO)2SBR王罗春1　张　超1,2　徐伟锋3(1.,200090;2.,201800;3.(),201203)　　,///,(AO)2SBR,。,1.5h、1h、3h、0.5h,DO=2.5mg/L,SRT=15d,,、、COD96.26%、99.87%、90.46%85.57%。,,,。　SBR　DO　SRT　　　X703.1　　　A　　　1673-9108(2010)02-0264-05Simultaneousnitrogenandphosphorusremovalinananaerobic/aerobic/anoxic/aerobicsequencingbatchreactorWangLuochun1　ZhangChao1,2　XuWeifeng3(1.PowerResourceandEnvironmentalEngineeringInstituteofShanghaiUniversityofElectricPower,Shanghai200090,China;2.CollegeofEnvironmentandChemicalEngineering,ShanghaiUniversity,Shanghai201800,China;3.PaquesEnvironmentalTechnology(Shanghai)Co.Ltd.,Shanghai201203,China)Abstract　Inthisstudy,experimentswereperformedbytheoperatingmannerofanaerobic/aerobic/anoxic/aerobicinasequencingbatchreactor(SBR)whichwasfedwithsyntheticwastewater.Theeffectofsimultaneousnitrogenandphosphorusremovalinthesystemof(AO)2SBRwasstudied,themechanismofcoinstantaneousni-trogenandphosphorusremovalwasfurtherdiscussedcombinedwithsmall-batchexperiments.Underthefollowingconditions:DO=2.5mg/L,SRT=15d,thesystemoperatedbythemannerof1.5hanaerobic、1.0haerobic、3.0hanoxic、0.5haerobic,hadagoodremovaleffectofnitrogenandphosphorus,theremovalefficiencyoftotalnitrogen,totalphosphorus,CODandTOCforsyntheticwastewaterwas96.26%,99.87%,90.46%,85.57%,re-spectively.Theresultshowsthatthemoreamountofinnercarbonsynthesizedandthemorequantityofammonianitrificated,thehighertheremovalrateofnitrogenandphosphorusbythesmall-batchexperiments.Keywords　SBR;DO;SRT;nitrogenandphosphorusremoval;syntheticwastewater:(50138010);:2009-02-20;:2009-04-23:(1968～),,,。E-mail:[e-mail]　　(sequencingbatchreactor,SBR)1914ArdernLock-et。2070,,SBR。,SBR,、COD、DO、ORP、pH、SBR[1]。[2](AO)3SBR(()1.5h,1h,1h,20min,1h,20min),//,,。,,(AO)2SBR、。2:(AO)2SBR1　1.1　1.1.1　实验装置SBR(SBR),1。0.12m,0.31m,3.5L。,10min,2L,44%。,100r/min,,DO0.2mg/L。,2L,20h。,2.5mg/L。(SRT)15d,(MLSS)3000～4000mg/L。1　SBRFig.1　Chartofsequencingbatchreactor1.1.2　实验水质[3],:COD300mg/L,NH+4-N30mg/L,TP8mg/L;1L1mL1mol/LpH7,1.2mL[4]。1.2　1.2.1　污泥驯化和运行工艺,A/O。3:SBR/2,(PAOs);A/O-SBR(DPAOs),,、、、。1(8h):()1.5h,1h,3h,30min1h、1h。1.2.2　批式实验:(1)SBR2.4L,0.9%NaCl2;(2),,2.4L,;(3)33,KH2PO41#、2#3#70mg/L、70mg/L0mg/L,2#、3#KNO3NO-340mg/L,SBR,;(4)1#DO3mg/L,2#、3#。3,,,。1.2.3　实验指标检测方法:TOC、COD、、、、、MLSS,[5]。2　2.1　SBR,SRT=15d、HRT20h,DO=2.5mg/L。,SRT=15d、HRT=20h、DO≈2.5mg/L,2SBR1NH+4-N、NO-2-N、NO-3-N、TP,31TC、TOC、TICCOD。2　1NH+4-N、NO-2-N、NO-3-N、TP(VSS=3124mg/L,DO=2.5mg/L)Fig.2　ConcentrationcurveofNH+4-N、NO-2-N、NO-3-N、TPinonecycleofSBR26543　1TC、TOC、TIC、COD(VSS=3124mg/L,DO=2.5mg/L)Fig.3　ConcentrationcurveofTC、TOC、TIC、CODinonecycleofSBR23:①(1.5h),COD,1h304mg/L30mg/L,,PAOsPHAs[6],[7],,7.96mg/L83.56mg/L;,NH+4-N(0.73mg/L);②(1.0h),PAOsPHAs,O2,1hTP83.56mg/L26.04mg/L,16.67mg/L2.01mg/L,、,5.4mg/L,3.6mg/L;③(3h),,1.03mg/L;DPAOsPHAs,、[8],,16.54mg/L,9.46mg/L,0.25mg/L0.02mg/L;④(0.5h),0.32mg/L,0.35mg/L,,;,,;⑤,(),。TOCCOD(PHAs)[6]。TN、TP、CODTOC96.26%、99.87%、90.46%85.57%。[2](AO)3SBR(()1.5h,1h,1h,20min,1h,20min),,(AO)2SBR90min,10%,;(A/O),;,、COD8.26%、0.87%2.46%。,(AO)2SBR[2](AO)3SBR、、。2.2　4TP、NO-3-N、NH+4-N。4　、TP、NO-3-N、NH+4-N(VSS=3215mg/L)Fig.4　ConcentrationcurveofTP、NO-3-N、NH+4-Nunderanoxic/aerobicconditionDPAOsNO-3O2,PAOsO2[9,10],(qPa/qPo),[11]。1#2#TP、7.349mgP/(gVSS·h)(qPa)、12.469mgP/(gVSS·h)(qPo),///,2,59%,2662:(AO)2SBRDPAOs。4:①3#NH+4-N[7]。②1#PAOsO2,120min;2#DPAOsNO-3,,NO-3-N,。③3#,;2#,。2#3#NO-3-N,。2.3　231TP、TN、TOCCOD,、、TN、TP、COD、TOC(1),1:①,O288.4%;NO-311.6%,,,。(4),[12],69.10mg/L11.56mg/L,83.28%;SBR,,。②,,;DPAOs66%TN。③PAOsCOD,PHAs,;、PHAs,12.5%,DPAOsPAOs。④,PHAs,“”,SBR,,,“”。1　1、、TN、TP、COD、TOCTable1　ConcentrationtransformationofTN,TP,COD,TOCunderanaerobic/aerobic/anoxicconditioninonecycleofSBR/(mg/L)(mg/L)(mg/L)(mg/L)TP8.18/5.4577.1172.109.467.62∶1TN29.36/16.670.874.839.691∶2.01COD304/169.82741∶1TOC115.5/64.2101.31∶1　　3。PHAs,,TIC,(CO2);,CO2,TIC[14];,,DPAOs,TIC,TOCCOD,。[14]“DPAOsNO3-NO-3,”,:0.46CH1.5O0.5(PHB)+0.41HNO3+H3PO4(Pi)※0.46CO2+1.55H2O+HPO3[poly-P]+0.21N2←　　,:CH1.5O0.5(PHB)+1.5HNO2+H3PO4(Pi)※CO2+2.5H2O+HPO3(poly-P)+0.75N2←26743　　(1)(AO)2SBR、,88.5%;,66%。(2)(AO)2SBRPHAs,。(3)(AO)2SBR100min(AO)3SBR、、。(AO)3SBR,(AO)2SBR90min,10%,(A/O),、COD8.26%、0.87%2.46%。(4),COD,。[1]PankajTanwar,TapasNandy,PallaviUkey,etal.Correla-tingon-linemonitoringparameters,pH,DOandORPwithnutrientremovalinanintermittentcyclicprocessbioreactorsystem.BioresourceTechnology,2008,99(16):7630～7635[2],,.(AO)3SBR.,2008,29(4):937～941[3]SatoshiTsuneda,TakashiOhno,KoichiSoejima,etal.Sim-ultaneousnitrogenandphosphorusremovalusingdenitrif-yingphosphateaccumulatingorganismsinasequencingbatchreactor.BiochemicalEngineeringJournal,2006,27(3):191～196[4]SmoldersG.J.F.,vanderMeij.J.,VanLoosdrechtM.C.M.Modeloftheanaerobicmetabolismofthebiologicalphosphorusremovalprocess:StoichiometryandpHinflu-ence.BiotechnologyandBioengineering,1994,43(6):461～470[5]《》.(4).:,2002[6]ComeauY.,KennethJ.H.,WilliamK.O.Determinationofpoly-β-hydroxybutyrateandpoly-β-hydroxyvalerateinactivatedsludgebygas-liquidchromatography.AppliedandEnvironmentalMicrobiology,1988,54(9):2