UASB处理甲苯氧化废水试验研究李再兴

243河北工业科技Vol.24,No.320075HebeiJournalofIndustrialScienceandTechnologyMay2007　　:1008-1534(2007)03-0136-04UASB1,1,1,2,2,1,　1(1.河北科技大学环境科学与工程学院,河北石家庄　050018;2.石家庄化纤有限责任公司,河北石家庄　050032)　:采用UASB反应器处理甲苯氧化废水,接种颗粒污泥,当进水ρ(COD)为6000mg/L,运行负荷(以COD计)为6kg/(m3·d)时,COD去除率达到84%左右,出水ρ(COD)为853～985mg/L,其适宜的运行条件为进水pH值为5～6,ρ(COD)为5000～6000mg/L,水力停留时间为24h,容积负荷(以COD计)为5～6kg/(m3·d)。通过对污泥的培养驯化和合理的运行方式,甲苯对厌氧消化的抑制影响可以得到很好的控制。:UASB;颗粒污泥;甲苯氧化;废水处理:X703　　　:AStudyontoluene-oxidizedwastewatertreatmentwithUASBreactorLIZai-xing1,LIZhi-hua1,YANGJing-liang1,LILi-ying2,HEYan-liang2,ZHANGLi-hui1,HANFeng1(1.CollegeofEnvironmentalScienceandEngineering,HebeiUniversityofScienceandTechnology,ShijiazhuangHebei050018,China;2.ShijiazhuangChemicalFiberCompanyLimited,ShijiazhuangHebei050032,China)Abstract:WastewaterfromoxidizingtolueneistreatedbyusingUASBreactorandseededwithgranularsludge.WhentheUASBinfluentρ(COD)is6000mg/L,andthevolumetricCODloadingratereaches6kg/(m3·d),CODremovalratereaches84%,andtheeffluentCODis853～985mg/L.TheoptimumconditionsarethatthepHvalueofinfluentis5～6,theinfluentρ(COD)is5000～6000mg/L,HRTis24handthevolumetricCODloadingrateis5～6kg/(m3·d).Theresultisthatthroughcultivatingtheanaerobicsludgeandcontrollingperformanceparameters,inhabitingeffectoftolueneonanaerobicdiges-tionisalmostelimilnated.Keywords:UASB;granularsludge;toluene-oxidized;wastewatertreatment　　,,、、,COD40000mg/L,,[1,2]。,COD,,:2006-10-10;:2006-12-22::(1973-),,,,。,。,,,,。,,,、、、———,,UASB[3,4]。[5,6]。,,[2]。,UASB,,,。1　1.1　UASB,,3.2L,1150mm,52mm,1000mm。,,(35±1)℃。1。图1　UASB反应装置示意图Fig.1　SchematicdiagramoftheUASBsystem1.2　,pH1.9～2.1,ρ(COD)39000～42000mg/L,。1.3　UASBUASB,ρ(VSS)/ρ(SS)=0.75,(VSS)22.3g/L。1.4　pH:pHS-2[7];COD:[7]。2　2.1　。1:(1-40),。。(COD,)2.0kg/(m3·d),pH7.5～8.0,ρ(COD)1921～2105mg/L。20d,ρ(COD)501mg/L96mg/L,COD74.3%94.9%。,ρ(COD)3000mg/L,。COD80%,20d,ρ(COD)150mg/L,COD95%。。2:(41-108)ρ(COD)4000mg/L,4.0kg/(m3·d),20d,ρ(COD)702mg/L317mg/L,COD82.4%92%。ρ(COD)5000mg/L,。20d,ρ(COD)462～541mg/L,COD90%,。,。,。ρ(COD)6000mg/L,6.0kg/(m3·d),20d,ρ(COD)853～985mg/L,COD84%。7.0kg/(m3·d),ρ(COD)7000mg/L,8d,COD84%65%,。2。2.2　1)、,,。,,,,,。,,,137　3　　　　　　　　　　　　　　　UASB图2　厌氧反应器试验运行结果Fig.2　Timeprofilesforρ(COD)andCODremovalrateduringthetreatmentprocess,,。2),。,COD,,,。COD3。图3　容积负荷对COD去除率的影响Fig.3　TimeprofilesforthevolumetricCODrateandCODremovalrateduringtheloadingtreatmentprocess3,1,ρ(COD)3000mg/L4000mg/L,2.0kg/(m3·d)14.0kg/(m3·d),COD95%82.4%,4～5d92%。2,ρ(COD)5000mg/L6000mg/L,4.0kg/(m3·d)6.0kg/(m3·d),COD90%84%,。,。37.0kg/(m3·d),8d,COD84%65%,。3)(HRT),,HRT。HRT4。图4　容积负荷与HRT的关系Fig.4　TimeprofilesforthevolumetricCODloadingrateandHRTduringthetreatmentprocess34:HRT37h24h,2.0kg/(m3·d)138　　　　　　　　　　　　　　　　　　　　　24　6.0kg/(m3·d),COD95%84%。HRT。4)pH,。,,(VFA)pH。,pH。pH2.0,,,Na2CO3pH7.5～8.0。,,,pH5.0～6.0,pH7.4～7.6,。,CO2-3HCO-3HACAC-2,pH,。5),,,。,7.0kg/(m3·d),COD,。,2.0kg/(m3·d),,4-5d。,,。,,。3　　1)UASB。,ρ(COD)6000mg/L,6.0kg/(m3·d),COD84%,ρ(COD)853～985mg/L。2)UASB:pH5～6,ρ(COD)5000～6000mg/L,24h,5.0～6.0kg/(m3·d)。3),,。:[1]　,.[J].,2000,20(8):10-15.[2]　　,.[J].,2002,25(2):20-22.[3]　,.[M].:,2004.[4]　,,,.[M].:,2003.[5]　.[J].,2003,26(1):14-16.[6]　.[J].,2004,35(3):64-67.[7]　《》.[M].4.:,2002.(128)[11]　WANGYe,MASATON,YOSHIMOTOT,etal.Synthe-sisofSBA-15withdifferentporesizesandtheutilizationassupportsofhighloadingofcobaltcatalysts[J].CatalysisTo-day,2001,68:3-9.[12]　,.“”SBA-15[J].,2000,21(1):21-23.[13]　WANGLi-na,QITao,ZHANGYi,etal.Morphosynthesisroutetolarge-poreSBA-15microspheres[J].MicroporousandMesoporousMaterials,2006,91:156-160.[14]　,　,,.、[J].,2002,60:1357-1360.[15]　ANTONIOBF.SynthesisoforderednanoporouscarbonsoftunablemesoporesizebytemplatingSBA-15silicamaterials[J].MicroporousandMesoporousMaterials,2004,67:273-281.139　3　　　　　　　　　　　　　　　UASB