MBBR与活性污泥法用于石化废水回用的比较研究刘凤喜

3212200712ENVIRONMENTALSCIENCEANDMANAGEMENTVol.32No.12Dec.2007:2007-03-13:(1964-),,,,,。:1673-1212(2007)12-0127-04MBBR刘凤喜1,李志东1,李娜2,刘丹3(1.,116023;2.,110034;3.,113-8656)　: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,气由水底上升,从填料空隙中穿过,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:X703:AStudyonComparisonofPetrochemicalWastewaterbyMBBRandASPLiuFengxi1,LiZhidong1,LiNa2,LiuDan3(1.InstituteofDalianEnvironmentalScienceDesignResearch,Dalian116023,China;2.ExperimentalCenterofShenyangNormalUniversity,Shenyang110034,China;3.EngineeringResearchInstitute,TokyoUniversity,Tokyo113-8656,Japan)Abstract:Thisexperimentcomparedmovingbedbiofilmreactorwithactivesludgeprocess.WhenHRTis8h,CODremo-vingrateandNH3-NremovingrateofMBBRarerespectively14.83%and25.66%morethanthatproducedbyASP;Thegasrisesfromthewaterbottom,passesthroughfromthefillinginthegap,largeairbubblesaredividedintosmallormicroonesduetotheincisionofcarriermaterialsintheMBBRwiththeresultofaugmentationofinterfacialsurfaceareabetweenairandliquid,thustoimprovetheutilizationefficiencyoftheoxygen.Asawhole,becauseofgreatnumberofbiomassgrownoncarriermateri-als,whoseconcentrationamountsto6g/LintheMBBR,farmorethanthatofASP(1～3.0g/L).Ithasstrongercapacitiesre-gardingtheimpactoforganicloadingcomparedwithASP.Keywords:MBBR;petrochemicalwastewater;HRT;organicloadingrate;airflow1　1.1　(1)1　:———10cm,5.7L;———10cm,5.7L;———9cm,2.86L。:,,,,,,,。MBBR:,,,,,,,,,·127·3212200712·MBBRVol.32No.12Dec.2007。1.2　,1。1　COD(mg/L)BOD5(mg/L)NH3-N(mg/L)P(mg/L)(mg/L)S2-(mg/L)(mg/L)Fe(mg/L)305.96117165.0173.21.072.21.3　,《》[1]。2。2　CODBOD5NH3-NDO4-2　2.1　,[2]。[3-4]。10cm5.7L,,Υ50＊50mm,500m2/m3,()50%,1.425m2。2.2　2.2.1　填料填充率对污染物去除效果的影响3,。(3)3　()/%20304050COD(mg/L)NH3-N(mg/L)COD(mg/L)NH3-N(mg/L)COD(mg/L)NH3-N(mg/L)COD(mg/L)NH3-N(mg/L)/%72.9047.5190.9879.3988.0283.4085.8887.41　　330%,。2.2.2　填料填充率对氧传递速率的影响:,Na2SO30,,。,,[5-8]:dc/dt=KLa(Cs-C)(1):ln(Cs-C)=-KLa(T)×t+(2)KLa(20℃)=KLa(T)×1.024(20-T)(3)dc/dt(20℃)=KLa(20℃)×Cs(20℃)(4)OC=KLa(20℃)×Cs(20℃)×V(5)EA=OC/S×100%(6)S=Gs×21%×1.43=0.3Gs(7),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)。GstDO,1n(Cs-C)t,KLa。KLa,。4:。30%,6.5min05.9mg/L,0、20%、30%,7.0min04.8、5.3、4.9mg/L,50%0mg/L3.4mg/L,30%。230%KLa。(5)。·128·3212200712·MBBRVol.32No.12Dec.20074　DOln(Cs-C)Filling/%t/min020304050DOln(Cs-C)DOln(Cs-C)DOln(Cs-C)DOln(Cs-C)DOln(Cs-C)002.1102.13——02.0902.111——0.42.081.51.89——1.21.972——0.62.062.41.74——1.41.932.5————3.11.61————31.41.921.02.003.61.512.81.671.81.863.5—————1.394.1———42.21.802.71.744.51.283.61.512.21.804.5————4.91.17——53.11.643.81.535.21.074.11.392.71.715.5————5.60.92————64.01.454.21.31——4.61.26——6.5————5.90.79————74.81.245.31.13——4.91.173.41.5885.21.126.00.88——5.31.035.01.1895.70.946.40.70——5.70.88——106.10.776.70.54——5.80.845.31.0812————————5.80.905　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=-0.9581　　6,30%,,,1.48;40%50%,,,,,。()30%。6　/%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—2010.449.500.0860.491.363012.6610.980.1000.571.58407.626.610.0600.340.94505.645.010.0450.260.722.3　(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)。·129·3212200712·MBBRVol.32No.12Dec.20072　ln(Cs-C)t3　COD4　NH3-N5　2.5　COD6。,MBBR,MBBRCOD,,MBBRCODCOD,MBBRCOD。,,MBBR2mg/L,6:1。6　COD3　3.1　8.0h,MBBRCOD50mg/L,COD87.57%,79.73%,14.83%25.66%。3.2　MBBR0.8～1.75kgCOD/(m3·d);0.53～1.05kgCOD/(m3·d),MBBR。3.3　MBBR6:1。:[1]魏复盛.水和废水监测分析方法(第四版)[S].中国环境科学出版社,2002.[2]罗大腾,刘义,林荣忱,等.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.,(下转第157页)·130·3212200712·Vol.32No.12Dec.2007,,。,、、。,。2.6　2.6.1　城市绿化。,,。,,,。,。。,,。,,。。,。,。,,。2.6.2　城市水环境治理,,,。,。,、,,,,。。,,,,。2.6.3　乡村生态环境问题。,;“”,“”。、,,,。,,。,,,--,,。3　,、,。,,,,、。,。:[1]马交国,杨永春.国外生态城市建设经验及其对中国的启示[J].世界地理研究,2005,14(1):61-66.[2]罗新阳.城乡融合:和谐社会的根基———从生态视角审视[J].中共杭州市委党校学报,2005(4):59-62.[3]蒋雪梅.对推进贵阳市建设循环经济型生态城市的思考[J].贵州工业大学学报(社会科学版),2004,6(1):39-42.[4]李承宗,谢翠蓉.生态城市建设的三个误区[J].城市问题,2005(1):45-46;49.[5]王如松.生态政区规划与建设中的若干问题思考———在2005中国·山东生态省建设论坛上的发言[R].2005.(上接第130页)2000,41(4-5):187-195.[6]R.Pujol,S.Tacrllo.Totalnitrogenremovalintwo-stepbiofiltrition[J].Wat.Sci.Tech,2000,41(4-5):65-68.[7]Aesoy,H.odegnard,K.Bach,etal.Denitrificationinapackedbiofilmreactor(Biofor)-experimentswithdifferentcarbonsources[J].Wat.Res.,1998,32(5):1463-1470.[8]Won-SeokChang,Seok-WonHongJoonkyuPark.Effectofzeolitemediaforthetreatmentoftextilewastewaterinabiologicalaeratedfilter[