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A/O,,,,,(,221116):/(A/O),,,、、、C/N,。:;;;:X7:A:1674-4829(2010)S2-0034-0401940,,,。2090,,[1]。21、[2-3]。1991Tallman,/[4]。Oregon200166435m33,,、,;、,[5]。2090[4]。、[6-11]、、。[12]A2/0,,,,。11,1,。,,,,。:2010-09-15:(1989),,,,.AnalysisofA/OStepFeedBiologicalDenitrogenationProcessYANRui,TIANLi-jiao,ZHAOGuo-zhu,YUANLi-mei,LIUHao,HEZhi-xinAbstract:Stepfeedanoxicoxic(A/O)processisanattractivebiologicalnitrogenremovalsystemforwastewatertreatment.Thispaperreviewstheprincipleandcharacteristicsofstepfeedbiologicalnitrogenremovalprocess.Someimportantfactorsabouttheoperationanddesignoftheprocess,suchasinfluentflowdistributionratio,dissolvedoxygen,sludgerecycleratioandtheratioofCandNarediscussed.Thehighesttheoreticalnitrogenremovalrateinstepfeedprocessisdescribedaswell.Keywords:Stepfeed;BiologicalNitrogenremoval;Nitrification;Denitrification232201012EnvironmentalScienceandTechnologyVol.23Supp.2Dec.2010EnvironmentalScienceandTechnology14A/OQQ1Q2Q3Q4A1O1A2O2A3O3A4O4232X'=r'1+r'Xr'1.1LanderStreet,HRT4.8h,5.7h,(NH4+-N)0.2~0.8mg/L[12];Lethbride(4900m3/d)5,MLSS()18%,1aNH4+-N0.5mg/L,NO3--N5mg/L[4]。1.2MLSSA/OMLSS,::X'MLSS,MLSS,mg/L;Xr'MLSS,mg/L;r'。,A/O,::XiiMLSS,mg/L;Qmm,m3/d;XrMLSS,mg/L;r。(1)、(2),Xr'=Xrr'=r,A/O[13]。,,MLSS。MLSS,A/OA/OSRT(SolidRetentionTime,)。SRT[14]。,MLSS35%~370%,[10,13],。1.3A/O,,50%,。A/O,50%~100%,200%~300%,70%[13]。,COD,,。,。,,,,[15]。1.4,NH4+NO3-,:,,:1mgNO3--N3.75mg,1mgNH4+-NNO3--N7.14mg[14]。,,,N2,H+,,,,,。pH7~8,。[16]。1.5,。[16],,。22.1、,[17]。,[8,17]、,A/O3,,,,;,C/N,,,;,,,。[18]2。,,(1)NH4+2O2NO3-+2H++H2ONO3-+1.08CH3OH+H+0.065C5H7O2N+0.47N2+0.76CO2+2.44H2O(2)XiXrr=r+∑im=1QmQA/O35201012,,,,,。,。2.2C/N1gNO3--NN2(BOD5)2.86g。,BOD5/TKN4~6,[7]。C/N。C/N,,TN。MLSS,MLSS,,,,,,,,。,,,MLSS,。C/N,,。,,C/N,,,,[1]。[18]9C/N,,C/N,。2.3(DO),60%~80%[19],50%[20]。。DO,,,[14],,。,DO,,,[21]。DO,,,CODDO,TN。TNSND。,DO,,DO[14]。[7],DO,DO,,,,DODO,。DO,,,DO,。2.4,20~30℃,20~40℃[14],,,,[22]。,A/O;,A/O[13]。,,12,,[4,10],。TN,,[1]。2.5、、A/O,,。,50%[1]。。3~4。A/O:(),A/O。,A/O;,A/O[23]。2~4[13]。3,TN:①,;②[18]。。[13]A/Oη2,ηE,、ηD。A/O、、36232(4)。::r,%;Qii,m3/d;Q,m3/d;n。[15],。:R;α—。2,。、。[1],,,,。4,,,。,、、,,C/N。[8],、,,,。,。[][1],,,.[J].,2006,7(10):83-87.[2]CRAWFORDG,BLACKS,STAFFORDD.ThestepbiologicalnutrientremovalprocessatLethbridgeoveronefullyearofoperation[C].California:[s.n.],2000.[3]FILLOSJ,RAMALINGAMK,CALTIOLA.Full-scaleevaluationofstepfeedBNRprocessataNewYorkCitywaterpollutioncontrolplant[C]∥Proceedingsof75thAnnualTechnicalExhibitionandConference.Chicago:[s.n.],2002.[4],.[J].,2003,19(4):32-36.[5]CARRIOL,STREETTF,MAHONEYK.Practicalconsiderationfordesignofastepfeedbiologicalnutrientremovalsystem[C]∥Proceedingsof73rdAnnualConferenceandExposition.California:[s.n.],2000.[6],,.[J].,2008,24(5):18-22.[7],,.DO[J].,2008,24(1):9-12.[8],,,.A/O[J].,2008,59(10):2608-2615.[9],,.A/ODO[J].,2007,23(21):1-5.[10],,,.[J].,2006,26(3):293-297.[11],,.A/O[J].,2008,28(2):116-120.[12],,,.[J].,2010,31(3):343-347.[13],,,.A/O[J].,2006,37(1):7-10.[14],,.[M].:,2006:108-314.[15],,.[J].,2007,39(4):594-598.[16],,,.A/O[J].,2008,34(14):170-171.[17],,.A/O[J].,2009,3(1):89-92.[18],,.[J].,2006,22(21):1-5.[19],,,.[J].,2003,35(3):268-271.[20].[J].,2001,27(10):38-42.[21],,,.[J].,2007,34(4):773-776.[22],,,.[J].,2009,16(5):76-79.[23]NADJAH,MARIOZ,MILENKOR,eta1.Designofasequencingbatchreactorsequencewithaninputloadpartitioninaenvironment[J].WaterEnvironmentResearch,2001,73(3/4):146-l54.()(3)ηD=(1-ηE)()1+rQiQ+ri=1n-1∑η=(1-)×100%α1+RA/O37
本文标题:分段进水AO工艺生物脱氮技术分析鄢锐
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