MBBR用于石化废水回用研究

MBBR沈阳师范大学教务处　郑志国[　]实验对生物浮动床(MBBR)和活性污泥法两种工艺进行了比较。当水力停留时间为8h时,MBBR中的COD去除率和NH3-N去除率比活性污泥法分别增加了14.83%和25.66%;在MBBR中,由于填料的切割作用使大气泡被切割成无数的小气泡或微小气泡,加大了气液的接触面积,从而提高了氧的利用效率。综合比较两种工艺,MBBR由于能够附着大量微生物使得废水中活性污泥浓度达到6g/L,远远大于活性污泥工艺(1～3.0g/L),因而在抗负荷冲击等方面优于活性污泥法。[]生物浮动床　石化废水　水力停留时间　冲击负荷　通气量　　1、1.1:——10cm,5.7L;——10cm,5.7L;——9cm,2.86L。1.2,1。1Table1ExperimentwastewaterqualityCOD(mg/L)BOD5(mg/L)NH3-N(mg/L)P(mg/L)(mg/L)S2-(mg/L)(mg/L)Fe(mg/L)305.96117165.0173.21.072.2　　1.3,《》[1]。2。2Table2AnalyticalmethodofexperimentalwastewaterqualityCODBOD5NH3-NDO4-　　2、2.1,[2-3]。[4-8]。10cm5.7L,,Υ50×50mm,500m2/m3,()50%,1.425m2。2.2(1)3,。3Table3EffectofStuffingrateofcarriermaterialonwastetreatmentresults20304050CODNH3-NCODNH3-NCODNH3-NCODNH3-N/%72.9047.5190.9879.3988.0283.4085.8887.41　　330%,。(2)230%KLa。—96—高校理科研究　　　　　　0ln(Cs-C)=-0.147t+2.27R=-0.982520%ln(Cs-C)=-0.174t+2.34R=-0.983230%ln(Cs-C)=-0.211t+2.13R=-0.997540%ln(Cs-C)=-0.127t+2.05R=-0.996750%ln(Cs-C)=-0.094t+2.07R=-0.95814Table4Effectofstuffingrateofcarriermaterialonoxygentransfer/%KLa(T)/h-1KLa(20℃)/h-1dc/dt(20℃)/kg·m-3·h-1OC·10-3/kg·h-1EA/%0()8.587.620.0690.391.08—2010.449.500.0860.491.363012.6610.980.1000.571.58407.626.610.0600.340.94505.645.010.0450.260.72　　dc/dt[kg/(m3·h)];KLa(T)T(1/h);Cs(mg/L);Ct(mg/L);OC(kg/h);V(m3);Ea(%);Gs(m3/h)。4,30%,,,1.48;40%50%,,,,,。()30%。2.3(HRT)COD,3～4,,HRT,MBBR,,8h,COD87.57%;79.73%,14.83%25.66%2.45,,MBBR。1.0kgCOD/(m3·d),MBBRCOD80%,COD50mg/L;,,COD。2.0kgCOD/(m3·d),MBBRCOD70%,MBBRCOD,COD。,MBBR。CODCOD,MBBR0.8～1.75kgCOD/(m3·d)。—97—高校理科研究　　　　　　2.5COD6。,MBBR,MBBRCOD,,MBBRCODCOD,MBBRCOD。,,MBBR2mg/L,6:1。3、(1)8.0h,MBBRCOD50mg/L,COD87.57%,79.73%,14.83%25.66%。(2)MBBR0.8～1.75kgCOD/(m3·d);0.53～1.05kgCOD/(m3·d),MBBR。(3)MBBR6:1。[1]魏复盛.水和废水监测分析方法[S](第四版).中国环境科学出版社,2002.[2]罗大腾,刘义,林荣忱,刘美侠.固定化微生物厌氧移动床——好氧法处理偶氮染料废水[J].城市生态与城市环境.1996,9(3):6-10.[3]邱立平,杜茂安,冯琦.二段曝气生物滤池处理生活污水的试验研究[J].环境工程,2001,19(2):22-24.[4]章非娟.水污染控制工程实验[S].高等教育出版社,1993,126-130.[5]S.Wijeyckoon,T.Mino,H.Satoh,etal.Fixedbedbiologicalaeratedfiltrationforsecondaryeffluentpolishing-effectoffiltrationrateonnitrifyingbiologicalactivitydistribution[J].Wat.Sci.Tech.,2000,41(4-5):187-195.[6]R.Pujol,S.Tacrllo.Totalnitrogenremovalintwo-stepbiofiltrition[J].Wat.Sci.Tech,2000,41(4-5):65-68.[7]Aes·y,H.·degnard,K.Bach,etal.Denitrificationinapackedbiofilmreactor(Biofor)-experimentswithdifferentcarbonsources[J].Wat.Res.,1998.32(5):1463-1470.[8]Won-SeokChang,Seok-WonHongJoonkyuPark.Effectofzeolitemediaforthetreatmentoftextilewastewaterinabiologicalaeratedfilter[J].ProcessBiochemistry,2002,2(37):693-698.(上接第95页)　　4、,,。　　[1]孙家广,杨长贵.计算机图形学.1995,北京:清华大学出版社.[2]Tomsai,C.T.Kanade,Shapeandmotionfromimagestreamsunderorthography:Afactorizationapproach.InternationalJournalofComputerVision,1992.9(2):p.137-154.[3]P.Beardsley,P.Torr,A.Zisserman.3Dmodelacquisitionfromextendedimagesequences.inProceedingsofthe4thEuropeanConferenceonComputerVision-VolumeII.1996:Springer-VerlagLondon,UK.[4]Debevec,P.E.ModelingandRenderingArchitectureformPhotographs:Ahybridgeometryandimagebasedapproach.inConferenceProceedings(SIGGRAPH'96),ACMSIGGRAPH,AddisonWesley,AnnualConferenceSeries.1996.NewOrleans,Louisiana.[5]Shum,H.,M.Han,R.Szeliski.Interactiveconstructionof3Dmodelsfrompanoramicmosaics.inProceedingsoftheConferenceonComputerVisionandPatternRecognition.1998.SantaBarbara,CA,USA.[6]Faugeras,O.,etal.,3-DReconstructionofUrbanScenesfromSequencesofImages.1995,INRIASophiaAntipolis:France.[7]Pollefeys,M.,Self-calibrationandMetric3DReconstructionfromUncalibratedImageSequences.1999,KatholiekeUniversiteitLeuven.—98—高校理科研究