A2O生物膜系统处理焦化废水工艺参数研究邱贤华

　第29卷第5期　2006年5月合肥工业大学学报(自然科学版)JOURNALOFHEFEIUNIVERSITYOFTECHNOLOGYVol.29No.5　May2006　　　:2005-06-07:(1968-),,,.A2/O邱贤华1,　李明俊1,　曹　群1,　黄小杰2,　章昆仑3,　张丹凤1(1.,　330034;2.,　230001;3.,　230031)　:A2/O,A2/O。,39h(:6h,10h,23h),3～6mg/L,pH6.8～8.0,R=3,。:;;;;--:X703　　　:A　　　:1003-5060(2006)05-0556-03Studyonthetechnicalparametersofcoke-plantwastewatertreatmentbytheA2/ObiofilmsystemQIUXian-hua1,　LIMing-jun1,　CAOQun1,　HUANGXiao-jie2,ZHANGKun-lun3,　ZHANGDan-feng1(1.Dept.ofEnvironmentalandChemicalEngineering,NanchangInstituteofAviationTechnology,Nanchang330034,China;2.HefeiEnvironmentalProtectionBureau,Hefei230001,China;3.AnhuiFengleAgrochemicalCo.,Ltd.,Hefei230031,China)Abstract:AnA2/Obiofilmsystemwasusedtotreatcoke-plantwastewater.Thetechnicalparametersofthetreatmentwereoptimized.Theoptimumconditionsfororganicandnitrogenremovalwereasfollows:thehydraulicretentiontimewas39h(theanaerobicprocess6h,theanoxicprocess10handtheoxicprocess23h);thedissolvedoxygenandthepHvalueintheaerobicreactorvariedwithin3～6mg/Land6.8～8.0,respectively;andthereturnsludgeratioofmixedliquor,R,wasthree.Keywords:coke-plantwastewater;decarbonization;biologicalnitrogenremoval(BNR);ammonia-ni-trogen;anaerobic-anoxic-oxicbiofilmtechnology　　、,[1,2]。,,、、、、[3,4]。,50%[5],COD[6]。[7,8],A2/O,。A2/O,。1　1.1　,(),,,,。,。A115cm×20cm×45cm,A225cm×20cm×45cm,060cm×20cm×45cm;12L、20L46L;6h、10h23h。3。1.2　,、。1。1　pHρCOD/(mgL-1)ρBOD/(mgL-1)ρ/(mgL-1)ρTKN/(mgL-1)7.16～9.18940～1496251～50521～12773～207,,,NaH2PO4。,THR39h,,pH、C/N、,COD、、NOx-NTKN。2　A2/O2.1　CODCODCODWCODλ,1。WCOD/(kgm-3d-1)1　CODCOD1,COD(0.60～0.88kg/(m3d)),COD,COD,0.76kg/(m3d),,COD87%。A2/O,0.60kg/(m3d)0.88kg/(m3d),,。2.2　2.2.1　混合液回流比对系统脱氮率的影响,。R,=R/(1+R)[9]。2,R=0.53,32.0%60.9%,,。3,,,3,。2　2.2.2　混合液回流比对A段COD去除的影响3,0.5～3,R,ACOD,0.53,ACOD17.3%27.3%。3　ACOD3　A2/OTHR=39h,R=3,27～31℃,(DO)3～6mg/L,pH6.8～8.0。COD、TKN,4、56。,2。557　第5期邱贤华,等:A2/O生物膜系统处理焦化废水工艺参数研究4　COD5　1.　2.　3.6　TKN2　ρ/(mgL-1)ρ/(mgL-1)/(%)COD124518585.169.84.393.4TKN161.825.883.9NO-2N02.1-NO-3N035.3-NO-xN037.4-4,COD940～1496mg/L,1245mg/L,COD124～260mg/L,COD185mg/L,COD85.1%。5,21～127mg/L,69.8mg/L,0.2～12.9mg/L,4.3mg/L,93.4%。6,TKN73～207mg/L,TKN161.8mg/L,TKN4.5～42.6mg/L,TKN25.8mg/L,TKN83.9%。,。,A2/OCOD、TKN。4　　　(1),A2/O、、。COD、TKN185mg/L、4.3mg/L、25.8mg/L85.1%、93.4%、83.9%。NO-x-NNO-3-N,37.4mg/L、35.3mg/L,60.9%。(2)A2/O,、11.8%、15.5%57.8%。(3),25.47mg/L。COD900～1200mg/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]　,,,.A-A/O[J].,2005,23(2):29-32.[5]　　,　.[J].,2001,21(3):144-149.[6]　,,.A1-A2-O[J].,2004,24(2):242-248.[7]　,.[J].,1997,16(2):13-18.[8]　ZhangMin.Comparisonbetweenanaerobic-anoxic-oxicandanoic-oxicsystemforcokeplantwastewatertreatment[J]JEnvironEng,1997,123(9):876-883.[9]　.NH-3N、COD[J].,1993,11(3):6-11.(　　)558　　　合肥工业大学学报(自然科学版)第29卷