短程硝化生物脱氮工艺的稳定性高大文

1,2,3,3(1.,　150040;2.,　150090;3.,　100022):(SBR),.,28℃,;,,12d,NO-2-N96%NO-2-N39.3%.,、.:;;SBR;;:X703.1　:A　:0250-3301(2005)01-0063-05:2004-02-03;:2004-03-04:(50138010);(E0230):(1967～),,,,,.E-mail:[e-mail]rification-DenitrificationGAODa-wen1,2,PENGYong-zhen3,WANGShu-ying3(1.CollegeofForestResourcesandEnvironment,NortheastForestryUniversity,Harbin150040,China;2.SchoolofMunicipal&EnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;3.SchoolofEnvironmentalandEnergyEngi-neering,BeijingUniversityofTechnology,Beijing100022,China)Abstract:Theeffectsoftemperatureandaerationtimeonthestabilityofshortcutnitrification-denitrificationarestudiedspeciallyinsomeexperimentsarecarriedonasequencingbatchreactor(SBR)fedwithsoybeanwastewater.Resultsshowthatshortcutnitrifica-tion-denitrificationachievedbycontrollingtemperaturewasnotstableuntilthetemperaturewasmorethan28℃.Inaddition,forthefirsttimestrongeffectofexcessaerationonshortcutnitrification-denitrificationisobserved.Whenthesystemrununderexcessaera-tionfortwelvedays,thetypeofnitrificationturnedfromshortcutnitrificationwhichnitrosationrate(NO-2-N/NO-x-N)wasmorethan96%tocompletenitrificationwhichnitrosationrate(NO-2-N/NO-x-N)waslessthan39.3%.So,inordertomakeshortcutnitrification-denitrificationrunstably,real-timeprocesscontrolmustbeused.Keywords:temperature;excessaeration;SBR;shortcutnitrification-denitrification;real-timecontrol　　NO-2-N,,NO-2.NO-2,NO-2NO-3,,.DelftSHARON,,[1～4].SHARON(30～35℃).,30～35℃.NO-2-N,,,、.1　　　SBR,(1),,,700mm,300mm,38L.50mm,;;,,;,,;pH(pHS-3C)Ag/AgClpH211ORPpHORP,ORPpH26120051　　　　　　ENVIRONMENTALSCIENCEVol.26,No.1Jan.,2005DOI:10.13227/j.hjkx.2005.01.014COD、NH+4-N、NO-2-N、NO-3-N、MLSS..,COD10000～15000mg·L-1,pH3.5～5.0.,,COD400～800mg·L-1,NH+4-N25～75mg·L-1.[5].1.　2.　3.pH　4.pH　5.ORP　6.ORP　7.　8.　9.　10.　11.　12.　13.　14.　15.1　SBRFig.1　TheschematicdiagramofexperimentalsystemwithcontrolequipmentinSBRprocess2　2.1　,,NO-2-N.[6],(31℃±0.5℃),.,,.,,.SBR5,:,8h,1h,0.5h,14.5h.,,,,NO-2-N96%.31℃±0.5℃,NO-3-N.NO-3-N,1.1～3.12,31℃±0.5℃30℃±0.5℃,,NO-2-N97%,NO-3-N1mg·L-1..,,.3,30℃±0.5℃28℃±0.5℃,14d,NO-2-N1.73mg·L-1,NO-3-N34.70mg·L-1,NO-2-N94%4.7%,.,,28℃,28℃,、.,,.,,NO-2-N,,.,.2.2　,,NH+4-NNH+4-NNO-2-N,,NO-2-NNO-2-NNO-3-N.NO-2-N,.NO-2-N96%,NO-3-N1mg·L-1,SBR,,,.,NO-2-N,,..NH+4-N60mg·L-1,64　　　　　　26　　　1　31℃±0.5℃Table1　Variationofnitrifiedtypewithreactioncyclesat31℃±0.5℃NH+4-N/mg·L-1NO-2-N/mg·L-1NO-3-N/mg·L-1NO-2-N/NO-x-N/%2002-04-2634.920.000.0116.190.640.6496.222002-04-2838.610.000.0620.210.970.4597.822002-04-3037.050.000.0119.980.360.3298.402002-05-0440.730.210.0617.301.410.7096.122002-05-0641.730.000.0119.150.750.7696.182002-05-1038.890.000.0112.901.070.5196.182002-05-1544.840.300.0420.610.700.3198.512002-05-2047.390.000.0122.800.700.7696.772002-05-2553.060.000.0119.871.260.3298.392　30℃±0.5℃Table2　Variationofnitrifiedtypewithreactioncyclesat30℃±0.5℃NH+4-N/mg·L-1NO-2-N/mg·L-1NO-3-N/mg·L-1NO-2-N/NO-x-N/%2002-05-2861.650.690.0835.981.320.6698.192002-05-3059.570.090.0332.940.750.7197.892002-06-0554.220.690.0333.800.510.8497.572002-06-0856.450.690.1133.601.160.8197.642002-06-1154.960.000.2336.401.010.7797.922002-06-1655.710.620.1435.300.700.5198.582002-06-2156.750.390.0630.890.700.4198.682002-06-2555.110.000.0834.890.550.3998.902002-06-2855.710.000.0733.380.690.9097.383　28℃±0.5℃Table3　Variationofnitrifiedtypewithreactioncyclesat28℃±0.5℃NH+4-N/mg·L-1NO-2-N/mg·L-1NO-3-N/mg·L-1NO-2-N/NO-x-N/%2002-07-0156.450.840.1721.780.8851.3594.182002-07-0860.1714.070.0828.451.227.3979.392002-07-1059.426.780.2032.090.7519.8361.802002-07-1167.160.000.2323.350.5136.6738.902002-07-1263.290.000.1310.420.6536.4222.242002-07-1355.710.000.232.080.7533.885.782002-07-1449.610.000.331.730.5034.704.74MLSS3.5～4.0g·L-1,28℃±0.5℃,0.6m3·h-1.,.NH+4-N、NO-2-NNO-3-N,NH+4-N、NO-2-NNO-3-N,2～5.2～5,,NO-3-N,12d,NO-3-NNO-2-N,NO-2-N39.3%,(4).,,(NH+4-N,NO-2-N),NO-2-N,NO-3-N.2　7dFig.2　Nitrificationafterexcessaerationforaweek651　　　　　　3　10dFig.3　Nitrificationafterexcessaerationfortendays4　12dFig.4　Nitrificationafterexcessaerationfortwelvedays5　13dFig.5　Nitrificationafterexcessaerationforthirteendays　　27d,2,330min,SBRNH+4-N,NO-2-N22.13mg·L-1,NO-3-N6.98mg·L-1;360min,NH+4-N,,NO-2-NNO-3-N,NO-2-N0.36mg·L-1,21.77mg·L-1,NO-3-N0.32mg·L-1,7.30mg·L-1;390min,NH+4-N,NO-2-N21.46mg·L-1,NO-3-N7.78mg·L-1.,.3～5,10d、12d13d,NO-2-NNO-3-N2,NO-2-NNO-3-N.7d、10d、12d13dNO-2-N0.0112mg·(L·min)-1、0.0274mg·(L·min)-1、0.0839mg·(L·min)-10.1014mg·(L·min)-1,NO-3-N0.0133mg·(L·min)-1、0.0270mg·(L·min)-1、0.1034mg·(L·min)-10.0747mg·(L·min)-1,NO-2-NNO-3-N,,NO-2-N.,NO-2-NNO-3-N.3:①,,,.②NO-2-N,NO-2-N.③,,NO-2-N.3.,NO-2-N,,,,,.,,NH+4-N,,(NO-2-N),,NO-2-N.,,NO-3-NNO-2-N,,2～5.,,.,SBR5,8h,,66　　　　　　26.[7].,,,,、.,ORPpH,,67.6　ORPpHFig.6　VariationofORPandpHduringnormalaeration7　ORPpHFig.7　VariationofORPandpHduringexcessaeration　　6ORPpH,ORP3(A,B,C),pH4(a,ab,b,c),、COD、,.6ORPpH(pH),NH+4-N、NO-2-NNO-3-N,.ORPpH[8].　　7ORPpH.pH6.NH+4-N,,NO-2-NNO-3-N,ORP.,NO-2-N,ORP.,.3　　　(1),.,28℃,,,28℃,、.(2),.,12d,NO-2-N96%NO-2-N39.3%.,,,,、.:[1]　HellingaC,SchellenAAJC,Mul