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:,,1965,1993*(980598)(98-K-005-01)低COD/N-NH4比废水的同时硝化反硝化生物处理策略*周少奇(,510640)方汉平(),COD/N-NH4,NO-2COD/N-NH4BiotreatmentoflowCOD/N-NH4ratiowastewaterbysimultaneousnitrificationanddenitrificationprocessZhouShaoqi,Dept.ofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510640Abstract:Accordingtostoichiometricprinciple,simultaneousnitrificationanddenitrificationisapromisingtechnologyforthebiotreatmentoflowCOD/N-NH+4ratiowastewater.Thestrategiesforthestoichiometriccontrolofthiskindwastewaterarefollows:(1)toregulatethenitrificationanddenitrificationthroughNO-2pathwaybycontroltheO2compressedintothesystem;(2)topromotethenutrientratioofCOD/N-NH+4ratioformicroorganismsbyaddingorganiccarbons.Theexampleofsuccessfulsimultaneousnitrificationanddenitrificationofhighammonialandfillleachate(averageCON/N-NH+4=2.3)ispresented.Keywords:NitrificationDenitrificationStoichiometry,,NH+4NOx,NOxN2,,,,,;,,N(N=COD/N-NH+4),NF2.0,N,,,COD,COD,NO-3NE2.86,COD/N-NH+411.1 微生物去除氨氮的两个过程:NH+4NO-2NO-3NO-2N2(1)û(1)û(2)û1,NitrosomonasNitrobacter;2,()1(1),,(NO-3)(NO-2):NH+4NO-3N2(2)NH+4NO-2N2(3)1.2 生物硝化反应的计量方程式与计量关系式2:18221200021-fs4O2+5+2fs40NH+4+fs4HCO-3=fs20C5H7O2N+18NO-3+5-4fs20H++5+6fs40H2O(4)1-fs4O2+10+3fs60NH+4+fs4HCO-3=fs20C5H7O2N+16NO-2+5-3fs15H++10+9fs60H2O(5),fs,0.01.0(4)(5)11(C5H7O2N)NoG/gO2/gN-NH+4YX/O/gVSS/gO2YX/N/gVSS/gN-NH+4GYX/N(4)160(1-fs)7(5+2fs)113fs160(1-fs)113fs7(5+2fs)G=327(1-45113Y)G[0.0,4.57]Y[0.0,]Y[0.0,2.306](5)240(1-fs)7(10+3fs)113fs160(1-fs)339fs14(10+3fs)G=247(1-182339Y)G[0.0,3.429]Y[0.0,]Y[0.0,1.863]:G=$O2/$H-NH+4,,YX/OO2,YX/NNH+4-N1.3 生物反硝化COD/N比与微生物生长量Y的计量关系,CAHBOENDfs1,,:CaHbOcNdCaHbOcCaHbO-cCODC5H7O2N,NOX:(1)NO-3NO-3,:14(COD)+28-23fs140NO-3=fs28C5H7O2N+1-fs10N2+()(6)(2)NO-3NO-3,NO-2:14(COD)+14-13fs28NO-3=fs28C5H7O2N+1-fs2NO-2+()(7)(3)NO-2NO-2,:14(COD)+26-23fs78NO-2=fs26C5H7O2N+1-fs6N2+()(8)(4)NO-3NH+4,:14(COD)+1-fs5NO-3+fs20NH+4=fs20C5H7O2N+1-fs10N2+()(9)[2,3],(6)(9),22(C5H7O2N)NoN/gCOD/gN-NOXYX/C/gVSS/gCODYX/N/gVSS/gN-NOXYN/C/gN2/gCODYN/N/gN2/gN-NOXNYX/C(6)207(1-23fs/28)113fs224565fs14(28-23fs)7(1-fs)2028(1-fs)28-23fsN=207(1-184YX/C/113)N[2.857,16.0]YX/C[0.0,0.505]YX/N[0.0,8.071]YN/C[0.35,0.0]YN/N[1.0,0.0](7)87(1-26fs/28)113fs224113fs7(28-26fs)/YN/N=28(1-fs)28-26fsN=87(1-208YX/C/113)N[1.143,16.0]YX/C[0.0,0.505]YX/N[0.0,8.071]YN/N[1.0,0.0](8)127(1-23fs/26)113fs208339fs14(26-23fs)7(1-fs)1226(1-fs)26-23fsN=127(1-184YX/C/113)N[1.714,14.86]YX/C[0.0,0.543]YX/N[0.0,8.071]YN/C[0.58,0.0]YN/N[1.0,0.0](9)207(1-fs)113fs160113fs56(1-fs)7(1-fs)201N=207(1-160YX/C/113)N[2.857,]YX/C[0.0,0.706]YX/N[0.0,]YN/C[0.35,0.0]:N=$COD/$H-NOX,;YX/CCOD;YX/NNOX-N;YN/CCODN2;YN/NNOX-NN2;YN/NNO3-NNO2-N19COD/N-NH42COD/N-NH+4,COD;:COD,,,pH7.28.0,pH7.07.5,12,NH+4NO-3NO-2;1gN-NO-3N22.875gCOD,1gN-NO-21.714gCOD,,N-NO-3N2CODN-NO-2COD40%,COD/N-NH+4,,,NO-2,COD/N-NH+4:(1),NO-2,NO-2;(2),COD/N-NH+4(,N4.054,,N4.035,,N6.716,,N8.867);,,NO-333.1 试验方法(2),10IALR8:pH7.308.42,COD575749mg/L,NH+4-N247391.2mg/L,COD/NH+4-N1.782.51(2.3),1071.81565.3mg/L:pHPHS-3CpH,TOCShimadzu-5000ATOC,NO-3NO-2ShimadzuDGU-4A,COD,HN+4-N3.2 试验结果1510(N2.3),IALR95d1TOCCODTOCTOCCODCOD2NH3-NNO-2-NNO-3-NXNH3-NNH3-NNO-2-NNO-3-N34(CaCO3)5pHpHpH15,(1)IALR(2)50d,2022120002TOCCOD,NH+4-NNOX-N,pH,45d,(3)5,,,pH7.0,6.82(pH7.28.0)(pH7.07.5)(4)CODN,IALR,NO-24,COD/N-NH+4NO-21RandallCW,BarnardJLandStenselHD.Designandretrofitofwastewatertreatmentplantsforbiologicalnutrientremoval.TechnomicPublishingCom.,Inc.,Pennsylvania,USA,19922..,1998,26(3):1241263..,1999,3:30324Clifford,D.andX.SLiu.Biologicaldenitrificationofspentregenerantbrineusingasequencingbatchreactor.WaterRes.,1993,27(9):147714845CookNE,SilversteinJ.HogreweWetal.Denitrificationofpotablewaterinapackedtowerbiofilm.Environ.Eng.,1990,1751826SisonNF,HanakiKandMatsuoT.Denitrificationwithexternalcarbonsourceutilizingadsorptionanddesorptioncapabilityofactivatedcarbon.WaterResearch,1996,30(1):2172277Akunna,J.C.,C.Bizeau&R.Moletta.Denitrificationinanaerobicdigesters:PossibilitiesandinfluenceofwastewaterCOD/N-NOXratio.Environ.Technol.,1992,13:8258368ZhouS.Q.,FangH.H.P.Simultaneousnitrificationanddenitrificationofhighammoniaorganicwastewaterstreatment.In:CD-Rof1999AsianIndustrialTechnologyCongress.April1999,HongKong:ET-E3-3(:1999-02-08),EDUR,15t/h:6bar,30Lm12%,,7m3/h,5.5kW,,,,28bar,70m3/h,35%100%,,,,()21COD/N-NH4