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29520065()JOURNALOFHEFEIUNIVERSITYOFTECHNOLOGYVol.29No.5May2006:2005206207:(1968-),,,.A2/O1,1,1,2,3,1(1.,330034;2.,230001;3.,230031):A2/O,A2/O,39h(:6h,10h,23h),36mg/L,pH6.88.0,R=3,:;;;;22:X703:A:100325060(2006)0520556203Studyonthetechnicalparametersofcoke2plantwastewatertreatmentbytheA2/ObiofilmsystemQIUXian2hua1,LIMing2jun1,CAOQun1,HUANGXiao2jie2,ZHANGKun2lun3,ZHANGDan2feng1(1.Dept.ofEnvironmentalandChemicalEngineering,NanchangInstituteofAviationTechnology,Nanchang330034,China;2.HefeiEnvironmentalProtectionBureau,Hefei230001,China;3.AnhuiFengleAgrochemicalCo.,Ltd.,Hefei230031,China)Abstract:AnA2/Obiofilmsystemwasusedtotreatcoke2plantwastewater.Thetechnicalparametersofthetreatmentwereoptimized.Theoptimumconditionsfororganicandnitrogenremovalwereasfollows:thehydraulicretentiontimewas39h(theanaerobicprocess6h,theanoxicprocess10handtheoxicprocess23h);thedissolvedoxygenandthepHvalueintheaerobicreactorvariedwithin36mg/Land6.88.0,respectively;andthereturnsludgeratioofmixedliquor,R,wasthree.Keywords:coke2plantwastewater;decarbonization;biologicalnitrogenremoval(BNR);ammonia2ni2trogen;anaerobic2anoxic2oxicbiofilmtechnology,[1,2],,[3,4],50%[5],COD[6][7,8],A2/O,A2/O,11.1,(),,,,,A115cm20cm©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(mgL-1)BOD/(mgL-1)/(mgL-1)TKN/(mgL-1)7.169.1894014962515052112773207,,,NaH2PO4,THR39h,,pHC/N,CODNOx2NTKN2A2/O2.1CODCODCODWCOD,1WCOD/(kgm-3d-1)1CODCOD1,COD(0.600.88kg/(m3d)),COD,COD,0.76kg/(m3d),,COD87%A2/O,0.60kg/(m3d)0.88kg/(m3d),,2.22.2.1,R,=R/(1+R)[9]2,R=0.53,32.0%60.9%,,3,,,3,22.2.2ACOD3,0.53,R,ACOD,0.53,ACOD17.3%27.3%3ACOD3A2/OTHR=39h,R=3,2731,(DO)36mg/L,pH6.88.0CODTKN,456,27555,:A2/O©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(mgL-1)/(mgL-1)/(%)COD124518585.169.84.393.4TKN161.825.883.9NO-2N02.1-NO-3N035.3-NO-xN037.4-4,COD9401496mg/L,1245mg/L,COD124260mg/L,COD185mg/L,COD85.1%5,21127mg/L,69.8mg/L,0.212.9mg/L,4.3mg/L,93.4%6,TKN73207mg/L,TKN161.8mg/L,TKN4.542.6mg/L,TKN25.8mg/L,TKN83.9%,,A2/OCODTKN4(1),A2/OCODTKN185mg/L4.3mg/L25.8mg/L85.1%93.4%83.9%NO-x2NNO-32N,37.4mg/L35.3mg/L,60.9%(2)A2/O,11.8%15.5%57.8%(3),25.47mg/LCOD9001200mg/L,COD139mg/L,,COD150mg/L,100mg/L[][1].[J].,1992,12(3):141-146.[2],,,.[J].,2003,(6):44-48.[3],.[J].,1995,21(6):355-358.[4],,,.A2A/O[J].,2005,23(2):29-32.[5],.[J].,2001,21(3):144-149.[6],,.A12A22O[J].,2004,24(2):242-248.[7],.[J].,1997,16(2):13-18.[8]ZhangMin.Comparisonbetweenanaerobic2anoxic2oxicandanoic2oxicsystemforcokeplantwastewatertreatment[J]JEnvironEng,1997,123(9):876-883.[9].NH-3NCOD[J].,1993,11(3):6-11.()855()29©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.