反硝化除磷过程中的影响因素探讨曹长青

反硝化除磷过程中的影响因素探讨曹长青1,　雷中方1,　胡志荣2,　刘　翔1(1.复旦大学环境科学与工程系,上海200433;2.加拿大Hydromantis环境咨询顾问公司,加拿大)　　　:　反硝化除磷能够实现以相同的基质同时脱氮和除磷,是国外废水生物处理研究的一个热点。为此讨论了缺氧池NO-3负荷、溶解氧和好氧池与缺氧池体积比、废水pH值、NO-3与基质共存和NO-2等因素对反硝化除磷的影响及其模拟情况,为反硝化除磷过程的模拟、试验研究和实际的应用提供了参考和依据。　　:　反硝化除磷;　影响因素;　模拟:X703.1　　:B　　:1000-4602(2005)07-0022-04DiscussionontheAffectingFactorsofDenitrifyingPhosphorusRemovalCAOChang-qing1,　LEIZhong-fang1,　HUZhi-rong2,　LIUXiang1(1.Dept.ofEnvironmentalScienceandEngineering,FudanUniversity,Shanghai200433,China;2.HydromantisInc.,Hamilton,Ontario,Canada)　　Abstract:　Inthedenitrifyingphosphorusremovalprocess,simultaneousremovalofnitrogenandphosphoruscanbeachievedbyusingthesamesubstrate.Inrecentyears,ithasbecomeahotissueinstudyofbiologicalwastewatertreatment.Thereforediscussionwasmadeontheprocessmodelingandkeyfactorsaffectingdenitrifyingphosphorusremovalsuchasnitrateloadtoanoxicreactors,dissolvedoxygen,volumetricratioofaerobicandanoxicreactors,pHvalue,coexistenceofnitratewithsubstrate,andni-trite,etc.,andthusprovidingbasisformodeling,experimentalstudy,andpracticalapplicationofthedenitrifyingphosphorusremovalprocess.　　Keywords:　denitrifyingphosphorusremoval;　affectingfactor;　modeling　　,(Phosphorus-AccumulatingOr-ganisms,PAOs)(NO-3),,(DenitrifyingPAOs,DPAOs),PAOs(AerobicPAOs,APAOs)。,DEPHANOX、A2NENBNRAS,ASM2d、BarkerandDoldTUDP。,[1]。,。1　缺氧池NO-3负荷Ekama[2],NO-3:NO-3;NO-3NO-3·22·第21卷　第7期2005年7月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vol.21No.7Jul.2005。[3]ENBNRAS。ENBNRASNO-3,25%60%,。Kuba[4]MUCT,NO-32814mgNO-3-N/(L),DPAOs/PAOs50%20%～40%。NO-3DPAOs:DPAOsPHBCOD。DPAOsNO-3,NO-3DPAOs,。,TKN/CODDPAOs。TKN/CODDPAOs;,TKN/COD。TKN/COD,NO-3。,NO-3,NO-3,NO-3;DEPHAN-OX、A2NENBNRAS,,,NO-3,。NO-3DPAOs,,,。2　溶解氧和好氧/缺氧反应器体积比,O2NO-31molNADH2ATP1.80.9mol[5、6],DPAOs,DPAOsPHBAPAOs,/,DPAOsAPAOs。DEPHBNOX,127.8mgP/(gVSS·d),APAOs。[3],/DPAOs/PAOs。,KubaA2SBR(DPAOs)(AOASBR):,,AOASBR5。,DPAOs,DPAOs。:①DPAOs,APAOs;②DPAOs。DPAOs,,。,/DPAOs。DEPHANOX、A2NENBNRAS,,,。DPAOs,[3]。3　pH值pH,pH,、。Kuba[6、7],APAOsDPAOs,pHAPAOsDPAOs。[8～10],pH(PRR)、(HAc)(AUR)/HAc(P/C,mol-P/mol-C):①pH(6.5～8.0)AUR,PRRpHP/CpH,P/CVSSP;②pH,。,pH,。,Kuba[8],pH·23·第7期　　　　　　　　　　　　　曹长青,等:反硝化除磷过程中的影响因素探讨　　　　　　　　　　　　　第21卷。Smolders[9]α1(molATP/C-molHAc,α1=P/C-0.25)pH1C-molHAc(0.5molHAc),pH,(1)(CH2O、CH10/6O5/6、HPO3CH1.5O0.5HAc、、PHB),α21P-molATP,α2=1mol。　CH2O+12CH10/6O5/6+0.25+α1α2HPO3※43CH1.5O0.5+16CO2+0.25+α1α2H3PO4+(512-0.25+α1α2)H2O(1)4　NO-3与基质共存NO-3,,NO-3DPAOs,HAc。Kuba[7]Wachtmeister[11],HAc,,DPAOsHAcPHB;NO-3HAc,PHBNADH2HAc,;HAc,ATP,。Meinhold[12]BiodeniphoTM、HAc,HAcPHB;HAcPHB。,(PHB)(PHB);APAOs,DPAOs。[7、11]。Filipe[13][7],NADH2,DPAOsHAc[(2)],。　CH2O+[(α1+0.5x)-δ(2-2.25x)]HPO3+(0.8-0.9x)HNO3※xCH1.5O0.5+(1-x)CO2+[(1.4-α1-1.7x)+δ(2-2.25x)]H2O+[(α1+0.5x)-δ(2-2.25x)]H3PO4+(0.4-0.45x)N2(2)　x———1C-molHAcPHB　δ———NO-31molNADH2ATPδ=1、α1=0.11[13],x0.69～0.89。Kuba[7]0.8,(2)Meinhold[12]。()NO-3,PAOs(APAOsDPAOs)NO-3,PAOsNO-3,ASM2d、BarkerandDoldTUDPNO-3,NO-3,NO-3。5　亚硝酸盐[14～16],DPAOsNO-2,,NO-2。,,NO-2。Satio[16],NO-2,NO-2GAOs(,GlycogenAccumulatingOrganisms)PAOs,NO-2GAOs。,NO-2,,ASM2d、Bark-erandDoldTUDPNO-2。NO-2,。,NO-2,NO-3,。6　其他GAOs。,GAOsPHB;GAOsPHB,GAOs。GAOsPAOs,GAOs。·24·第7期　　　　　　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　　　　　　　第21卷GAOs,Filipe[17]、Zeng[18]GAOs。,、、(Mg2+K+)、SRTP,。7　结语,,。、,、。:[1]　HuZhi-rong,WentzelMC,EkamaGA.Modellingbio-logicalnutrientremovalactivatedsludgesystems:are-view[J].WatRes,2003,37(14):3430-3444.[2]　EkamaGA,WentzelMC.Denitrificationkineticsinbi-ologicalNandPremovalactivatedsludgesystemstrea-tingmunicipalwastewaters[J].WatSciTech,1999,39(6):69-77.[3]　HuZhi-rong,WentzelMC,EkamaGA.Anoxicgrowthofphosphorusaccumulatingorganisms(PAOs)inbio-logicalnutrientremovalactivatedsludgesystems[J].WatRes,2002,36(19):4927-4937.[4]　KubaT,vanLoosdrechtMCM,BrandseFA,etal.Oc-currenceofdenitrifyingphosphorusremovingbacteriainmodifiedUCT-typewastewatertreatmentplants[J].WatRes,1997,31(4):777-786.[5]　SmoldersGJF,vanderMeijJ,vanLoosdrechtMCM,etal.Stoichiometricmodeloftheaerobicmetabolismofthebiologicalphosphorusremovalprocess[J].BiotechBioeng,1994,44(7):837-848.[6]　KubaT,MurnleitnerE,vanLoosdrechtMCM,etal.Ametabolicmodelforthebiologicalphosphorusremovalbydenitrifyingorganisms[J].BiotechBioeng,1996,52(6):685-695.[7]　KubaT,MurnleitnerE,vanLoosdrechtMCM,etal.Effectofnitrateonphosphorusreleaseinbiologicalphos-phorussystems[J].WatSciTech,1994,30(6):263-269.[8]　KubaT,vanLoosdrechtMCM,HeijnenJJ.Biologicaldephosphatationbyactivatedsludgeunderdenitrifyingconditions:pHinfluenceandoccurrenceofdenitrifyingdephosphatationinafull-scalewastewatertreatmentplant[J].WatSciTech,1997,36(12):75-82.[9]　SmoldersGJF,vanderMeijJ,vanLoosdrechtMCM,etal.Modeloftheanaerobicmetabolismofthebiologi-calphosphorusremovalprocess:stoichiometryandpHinfluence[J].BiotechBioeng,1994,43(6):461-470.[10]　FilipeCDM,DaiggerGT,GradyCPLJr.Stoichiome-tryandkineticsofacetateuptakeunderanaerobiccondi-tionsbyanenrichedcultureofphosphorus-accumulatingorganismsatdifferentpHs[J].BiotechBioeng,2001,76(1):32-43.[11]　WachtmeisterA,KubaT,vanLoosdrechtMCM,etal.Asludgecharacterizationassayforaerobicanddenitrif-yi