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2000,6(6):581～585 ChinJApplEnvironBiol=ISSN1006-687X 2000-12-25 :2000-06-09 :2000-09-27SBR蔡木林 江跃林 裴 健 龚 革 张本兰( 610041) .SBRSBRSBR,SBR.,NH3-N,766.54mgL-1d-1;11.0%～38.7%30%～40%.tHR24h,SBRρIn(NH3-N)600～760mgL-1,NH3-NTN98.5%98%,NH3-N.277 SBR;;;CLC X780.3:X172TREATMENTOFCHEMICALINDUSTRIALWASTEWATERCONTAININGHIGHNH3-NBYATWO-STAGESBRPROCESSCAIMulin,JIANGYueLin,PEIJian,GONGGe&ZHANGBenlan(ChengduInstituteofBiology,ChineseAcademyofSciences,Chengdu 610041,China)Abstract ThetreatmentofchemicalindustrialwastewatercontaininghighconcentrationofNH3-Nwasstudiedwithatwo-stageSBRprocess.Thereactorswerestartedbythedirectactivatedsludge.Thetwo-stageSBRprocessiscomposedofnitrificationSBRanddenitrificationSBRreactors,andsuspendedsludgeandfixedbiofilmwereusedinnitrificationSBRsystemforcomparison.TheresultsuggestedthatthelaterhadahigherNH3-Nvolumeloadingof766.54mgL-1d-1andtheconsumptionofalkaliandcarbonresourcewas11.0%～38.7%and30%～40%lessthanthatoftheformer.UndertheoperatingconditionoftHR24h,thetwo-stageSBRprocesscouldtreatthechemicalindustrialwastewatercontaininghighconcentrationofNH3-Nof600～760mg.L-1,andtheremovalrateofNH3-N,TNwasmorethan98.5%and98%.Fig2,Tab7,Ref7Keywords two-stageSBRprocess;wastewatertreatment;nitrification;denitrificationCLC X780.3:X172.,,NH+4NO-X,NO-XN2,[1,2].,,.、,,、、、COD/N-NH3..SBRAB,SBR,,.SBRAB,[3].SBR.1 1.1 SBRSBR:6L,,SBRⅠ,SBRⅡ(SBBR).SBRⅡSBRZH-I,1538m2/m3,d=8cm,3～3.5cm,6～7cm(2).SBR:8L,,,ρ(DO)0.5mgL-1,.1 SBRFig.1 Thetwo-stageSBRprocess2 Fig.2 Configurationofcombinedmedia1.2 ,1.1 Table1 QualitiesofchemicalindustrialwastewaterItemsCODcrBOD5NH3-NTKNTP(pH)ρ/mgL-1220.0～596.016.12～46.30725.30～1271.20937.29～1890.801.22～3.58(9.0～10.5)1.3 CODcr、TKN、TN、NH3-N、NO2-NNO3-N,[4].1.4 1.4.1 SBRⅠⅡ .,,SBRIⅡ.ρ(NH3-N),70mgL-1280mgL-1,.(tHR)20h36h,21～28d,,ⅡNH3-N.1.4.2 SBR 、,.14d,NO-X87.5%.582 62 2.1 SBRSBR2.2 SBRTable2 Theoperationalparametersofthetwo-stageSBRprocessTypeofreactorsOperatingstagesInfluentAerationSettleEfluentt/hCyclet/hDischangingratioMLSSρ/gL-1θ/℃pHSBRⅠNitrifiationSBRmodelⅠreactor10.5520.581/2.54.31257.5-8.020.5830.5121/2.55.84257.5-8.0SBRⅡNitrifiationSBRmodelⅡreactor10.5610.581/20.40＊10.24＊257.5-8.020.51010.5121/20.56＊11.36＊257.5-8.0SBRDenitrificationSBR0.510.512-243/414.06257.0-7.5＊0.400.56MLSS,10.2411.36MLSS(0.40and0.56aresuspendedgrowthMLSS,10.24and11.36areattachedgrowthMLSS.)2.2 SBRⅠ,ρ(NH3-N).SBRⅠ,CODcr/TKN0.5～1.0,CODcr,.5%NaH2PO4TKN:TP=20:1TP,.NH3-N14～21d,3.3 SBRⅠTable3 TheconversionbetweenthenitrogencompoundsinthenitrificationSBRmodelIreactorOperatingstagesNo.ρ(NH3-N)/mgL-1ρ(NO2-N)/mgL-1ρ(NO3-N)/mgL-1ρ(TN)/mgL-1NaHCO3＊NaHCO3requirementInEfRE/%InEfInEfInEfRE/%ψ/mLL-1174.030.5899.200.0603.21183.1235.7780.55.02142.130.9199.300.47038.48213.6584.4060.510.4Stage13200.590.6299.709.300145.67434.00224.1448.420.84320.6039.9887.5013.040214.25503.44387.9822.929.25416.644.0399.103.780284.56582.41349.3440.033.36548.801.0199.805.700375.32632.10442.5330.050.0Stage27641.209.5998.5049.940442.20847.20550.0935.162.58730.20157.6978.4092.630361.54894.15670.2625.085.4 In=InfluentEf=EffluentRE=RemovalEfficiency(Thesamebelow)ρ(NaHCO3)=50gL-1(Thesamebelow)3,ρIn(NH3-N)320.60mgL-1,T=8h,,ρEf(NH3-N)39.98mgL-1,,(tHR).T=12h,ρIn(NH3-N)641.20mgL-1,ρEf(NH3-N)9.59mgL-1,98.5%,NO-2.ρIn(NH3-N)730.20mgL-1,NH3-N,ρEf(NH3-N)157.69mgL-1,NO-2,.,,SBRⅠNH3-N.2.3 SBRⅡSBRⅡ,ρ(NH3-N)14～21d,4. 4,SBRⅡ,ρEf(NH3-N)12mgL-1,98.5%,ρIn(NH3-N)820.40mgL-1,ρEf(NH3-N)106.82mgL-1,NH3-N5836:SBR ,.,NO-2,NO-X70%～80%,NO-3.,DO,DO,ρ(DO),.,NH3,NO-2.4 SBRⅡTable4 TheconversionbetweenthenitrogencompoundsinthenitrificationSBRmodelIIreactorOperatingStagesNo.ρ(NH3-N)/mgL-1ρ(NO2-N)/mgL-1ρ(NO3-N)/mgL-1ρ(TN)/mgL-1NaHCO3NaHCO3requirementInEfRE/%InEfInEfInEfRE/%ψ/mlL-1Stage11170.241.1399.4067.70020.38254.53120.7552.510.02220.740.8499.6098.71026.44351.71182.1448.215.03314.052.8099.10149.12050.16425.50269.3636.725.04451.921.9099.60204.80065.41513.84317.2138.330.05532.002.5299.50243.54081.24594.16382.0035.740.06646.245.4999.20334.740105.08682.40493.4027.750.0Stage27694.408.4798.80361.200127.10764.43589.8322.866.78766.5411.8198.50436.420135.60921.63656.1028.875.09820.40106.8286.90448.730121.241126.3876.7922.283.32.4 SBRSBRNO-2NO-3,.(ρ(DO)0.3～0.5mgL-1),,.(CH3OH),.[5]:Cm=2.47[NO3-N]+1.53[NO2-N]+0.87DO:Cm———(mgL-1) [NO3-N]———(mgL-1)〕[NO2-N]———(mgL-1) DO———(mgL-1)SI:ρ(CH3OH)=2.47ρ(NO3-N)+1.53ρ(NO2-N)+0.87ρ(DO)ρ(NOx-N),,SBR,,25℃,ρ(DO)0.5mgL-1,4h,5.5 SBRTable5 TheoperationresultsofthedenitrificationSBRprocesstHR/h04812162024CH3OHCH3OHrequirementφ/mLL-1Ⅰρ(NO2-N)/mgL-190.3852.9025.8511.43-2.360.12Nitrifyingliquidofρ(NO3-N)/mgL-1428.10308.55205.7096.31-24.501.980.90SBRmodelIreactorρ(CODcr)/mgL-11043.06919.30727.78506.02-153.4146.15Ⅱρ(NO3-N)/mgL-1132.6363.3437.2014.70-0.810Nitrifyingliquidofρ(NO2-N)/mgL-1413.42257.66141.2862.62-31.623.220.57SBRmodelIIreactorρ(CODcr)/mgL-1736.30590.27463.78310.85-86.4331.70 SBR,,N2N2O.SBRⅡNO-2,.CODcr,,.CODcr,,.3 3.1 SBRⅠⅡ(1)ⅡNH3-NⅠ20%～50%.584 66 SBRIⅡNH3-NTable6 Thecomparisonofthenitr