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2005,25(Suppl.)43~46ChinaEnvironmentalScience1,1,1,2,1,1(1.,4100822.,510080)/SBR2COD/N,,2,NH4+NpH,COD/N,,NH4+N98%,,NOxN100~120mg/L10~20mg/L,275mg/L./SBRX703.1A10006923(2005)S0004304Removingthenitrogenfrompiggerywastewaterbynitritenitrification/denitrification.YANGZhao-hui1,GAOFeng1,ZENGGuang-ming1,CHENJun2,XIEGeng-xin1,ZHANGWei1(1.DepartmentofEnvironmentalScienceandEngineering,HunanUniversity,Changsha410082,China2.TheFirstHospitalofSunYat-senUniversity,Guangzhou510080,China).ChinaEnvironmentalScience,2005,25(Suppl.)43~46AbstractThedenitrificationeffectofusingAnoxic/AerobicSBRtechniquetotreattwokindsofwastewaterofdifferentCOD/Nwascomparedandanalyzedintheexperiment.Denitrificationprocessoftwokindsofwastewaterwasrealizedmainlythroughnitritenitrification/dentrification;NH4+NconcentrationandpHvalueinthereactorweretheimportantfactorscontrollingnitrationofnitritetype.DuetomaintaininghigherCOD/N,denitrificationeffectofthewastewaterdigestedpartlywashighermarkedlythanthatofdigestedcompletely,NH4Nremovalratereachedabove98%.Butthedenitrifyingofeffluentwasnotcomplete,andafteraddingsodiumacetatetheNOxNofaffluentdecreasedfrom100~120mg/Lto10~20mg/L,andaddingamountof275mg/Lwasadaptable.Keywordsnitritenitrification/denitrificationanoxic/aerobicSBRpiggerywastewateranaerobicdigestion,.[1,2].,COD/N,COD/N,,.4,,4[3].,,,,COD/N,.11.1,,→→UASB→SBR→.UASB,UASB.1.2003070870171055,5047805344251Table1ThequalityofwastewaterCOD(mg/L)7000~100002000~3500BOD5(mg/L)3000~80001000~1700NH4+N(mg/L)1000~14001000~1300NOxN(mg/L)8~127~10pH7.0~8.57.0~8.51.22SBR,SBR1SBR2,SBR1,SBR2.SBR1,,7.5L,SP-780,7312,DHC,,20~25.1SBRFig.1SchematicdiagramofSBRreactor1.2.3.4.5.6.7.1.3SBR/SBR,2,,,.,2L.2COD/N,,SBR11h6h4h6h3h;SBR23h6h2h6h3h.1.4CODCr;BOD5;;-(1-)-;;TN;pHPHB5.22.1SBR.40,SBR1SBR220%85%70%.SBR1SBR22.2SBR1SBR2Table2TherunresultsofSBR1andSBR2SBR1SBR2CODCr(mg/L)7785~99432063~3455CODCr(mg/L)674~8621098~1376CODCr(%)90.0~92.145.5~68.2NH4+N(mg/L)999~12461120~1256NH4+N(mg/L)10~17155~202NH4+N(%)98.5~99.082.1~87.6NOxN(mg/L)106~117158~166NO2N/NOxN0.93~0.960.94~0.962,SBR1SBR2,SBR1NH4+NNOxN,CODCrSBR2.SBR1,,,SBR1CODCr,COD/N(7~10).SBR2,,,SBR2CODCr,COD/N(1~3).COD/NCOD/N,45.2,SBR1SBR2NO2N/NOxN,NO2,.2.2/SBRSBR1,SBR225NH4+NNO2NNO3N2.SBR1,1hNOxN,SBR1,,1hNOxN,.SBR2,,,3h,NOxN,.SBR1SBR22/.SBR1,C,NH4+NNO2N,.SBR2,C,,NOxN,NOxN,NOxNNH4+N.2SBR1,SBR2NH4+NNO2NNO3NFig.2ConcentrationofNH4+NNO2NNO3NinSBR1andSBR2varyfromtimeSBR1NH4+NNO2NNO3NSBR2NH4+NNO2NNO3—N2,2NO3N,NOxNNO2N,NO2N..NO2NNO3NpHNH4+N,,NO2N.NO2NNO3NpH8.0pH7.0[4].1SBR1SBR2pHNH4+N3.3SBR1SBR2pHNH4+NFig.3pHandNH4+NconcentrationinSBR1andSBR2varyfromtimepH(SBR1)NH4+N(SBR1)pH(SBR2)×NH4+N(SBR2)3,,SBR1SBR2pH7.5~8.77.5~8.2,,.pHNH4+N(FA),FANH4+N:NH3+H2ONH4++OH.Anthonisen[5]FAFA5~40mg/L,0.1~1.0mg/L.NH4N300~360mg/L,FA19~23mg/L,NH4NpH(3),010020030040005101520(h)(mg/L)7.47.67.88.08.28.48.68.805101520(h)pH050100150200250300350400NH4+N(mg/L)4625FA,2SBR1SBR2FA1.6~1.8mg/L,7.4~8.2mg/L,,pHFA.2.3C,SBR117h2.4,275mg/L,NOxN,,CODCr,275mg/L.4CNOxNFig.4EffectsofexternalcarbonsourceoneffluentNOxNconcentration2.4MLSS2000~3000mg/L,SBR1,NH4+N3.3,.NH4+N,NH4+N,NH4+N,;,,,,,,,.2L(27%),CODCr2.304kg/(m3·d),NH4+N0.384kg/(m3·d).3Table3effectofloadingrateonnitrogenremoval(L)CODCr[kg/(m3·d)]NH4+N[kg/(m3·d)]NH4+N(%)1.51.7280.28898.822.3040.38498.52.52.8800.48082.333.4560.57671.633.1COD/N,,NOxNNH4NCODCr.3.2NO2N,.pHNH4N3.3TN,NOxN20mg/L3.4,,27%,CODCr2.304kg/(m3·d),NH4N0.384kg/(m3·d).[1],.[J].,2000,26(9):4446.[2]EumY,ChoiE.Optimizationofnitrogenremovalfrompiggerywastebynitritenitrification[J].Wat.Sci.Tech.,2002,45(12):8996.[3],.[M].:,2000.[4][].[M].:,1998.[5]AnthonisenAC,LoehrRC,PrakasamTBS,etal.Inhibitionofnitrificationbyammoniaandnitrousacid[J].JournalofWaterPollutionControlFed.,1976,48(5):835852.(1963),,,,,.50.600650700750800050100150200250300350(mg/L)020406080100120CODCr(mgL)NOxN(mgL)CODCrNOxN