工业化UASB反应器污泥无载体颗粒化特性研究李再兴

325200810()JournalofNanjingUniversityofScienceandTechnology(NaturalScience)Vol.32No.5Oct.2008　:2006-12-18　　:2008-09-11　:(E2008000694);(06276705)　:(1973-),,,,,:,E-mail:[e-mail]。UASB李再兴1,2,杨景亮1,刘　春1,郭建博1,邢丽楠1(1.,050018;2.,100083)　:以阿维菌素废水为处理对象,在工业化中温上流式厌氧污泥床(UASB)反应器中研究了污泥无载体颗粒化过程中的污泥特性。研究表明,接种絮状污泥,经过189d运行成功实现污泥无载体颗粒化。在污泥颗粒化过程中污泥特性发生了显著变化:挥发性悬浮固体(VSS)与悬浮固体(SS)的质量比由接种时的0.45提高到0.8;最大比产甲烷速率由57.3提高到299mL/(gVSS·d);胞外聚合物(ECP)与污泥质量比由31.4提高到58.3mg/g,同时发现ECP含量的增加对于促进污泥无载体颗粒化起到了关键作用。成熟颗粒污泥以灰黑色为主,粒径为1.0～2.0mm,密度为1.082g/cm3,平均沉降速度为65.3m/h。颗粒污泥表面以丝状菌和杆菌为主,内部多为球菌和短杆菌。:上流式厌氧反应器;工业化反应器;阿维菌素废水;无载体颗粒化;污泥特性:X703.1　　:1005-9830(2008)05-0655-06CharacteristicsofSludgeGranulationwithoutCarrierinFull-scaleUASBReactorLIZai-xing1,2,YANGJing-liang1,LIUChun1,GUOJian-bo1,XINGLi-nan1(1.SchoolofEnvironmentalScienceandEngineering,HebeiUniversityofScienceandTechnology,Shijiazhuang050018,China;2.CivilandEnvironmentalEngineeringSchool,UniversityofScienceandTechnlogyBeijing,Beijing100083,China)Abstract:Thesludgecharacteristicsinafull-scaleupflowanaerobicsludgeblanket(UASB)reactortreatingavermectinwastewaterareinvestigatedintheprocessofsludgegranulationwithoutcarrier.Theresultsshowthat:inoculatedwithflocsludge,sludgegranulationwithoutcarriercanberealizedsuc-cessfullyafterrunningfor189dinthebioreactor.Thecharacteristicsofsludgevariesremarkablydur-ingthesludgegranulation.TheratioofVSS/SSincreasesfrom0.45to0.8.Thesettlingvelocitiesaresignificantlyimproved.Themethanogenicactivityincreasesfrom57.3to299mL/(gVSS·d)andthecontentofextracellularpolymers(ECP)variesfrom31.4to58.3mg/g.TheECPincreaseplaysakeyroleintheprocessofgranularsludgeformationwithoutcarrier.ThematuregranularsludgeisDOI:10.14177/j.cnki.32-1397n.2008.05.002　()325grey-blackwiththediameterof1.0to2.0mm,thespecificgravityof1.082g/cm3andtheaveragesettlingvelocityof65.3m/h.Thebacilliformandfilamentousfungiaredominantonthesurfaceofthegranularsludgeandtherod-typeandshortlybacillaryfungiaredominantinsidethegranularsludge.Keywords:upflowanaerobicsludgeblankets;full-scalereactors;avermectinwastewater;granula-tionwithoutcarrier;sludgecharacteristics　　,、、、,,[1]。(UASB),(avermectin,AVM),[2,3]。,UASB[4]。UASB,UASB。1　(UASB),9m,8m,500m3。,pH3.5～4.5,CODρCOD27～32g/L,(SS)1.5～1.8g/L,AVM195～215μg/L。,25gVSS/L,57.3mL/(gVSS·d)。:pH,pHS-3[5];COD,[5];SSVSS,[5];,[6];,[7];(ECP),[8]。2　2.1　,,,189。1。,UASBpH4～5,COD8.89～12.1g/L,COD10.5kg/(m3·d),COD85%,COD1.308～1.670g/L。1　2.2　UASB,,。(1)。,,(SEM)2。2,,,。,,,340SEM。3,,0.1～0.2mm,,,。656162　　　　　　UASB　2　SEM3　40SEM(2)。60,,SEM4。4,60,,,,0.6mm;,,。,。。90SEM(5),,1.0mm;,,。4　60SEM5　90SEM(3)。,、。120,。120SEM(6),,657　()3251.0～1.5mm,,。6　120SEM(4)。160SEM(7),,,,1.0～2.0mm,,,。7　160SEM,,,,。,1.0～2.0mm,8。8　(TEM)(9),,,,,、,。9　TEM(×4000)2.3　(1)。10。10,,SSVSS5525g/L,,45,,,SSVSS;80,,;,,,。,,,SS35g/L,VSSSS0.8,。(2)。。658162　　　　　　UASB　,11。10　UASB11　11,,。,。,1.082g/cm3,48.7～77.6m/h,65.3m/h。(3)。UASB12。12　12,40,。,,,;,,。90,,。,,;,,。120,,,。。160,,,,。2.4　(1)。。,;UASB,。,,13。13　13,,,,57.3299mL/(gVSS·d)。(2)。ECP。ECP,(-、、)[9,10],。ECP,14。659　()32514　ECP14,,ECP31.458.3mg/g。,,,ECP。3　UASB,,189d。:(1)。,1.0～2.0mm,,;(2),,VSSSS0.450.8;,1.082g/cm3,48.7～77.6m/h,65.3m/h;,2,;(3),。57.3299mL/(gVSS·d);ECP31.458.3mg/g。ECP。:[1]　,,,.[J].,1997,18(3):83-85.[2],,,.[M].:,2003.136-143.[3],,,,[J].,2005,18(4):44-46.[4],,,.UASB[J].,2007,1(8):62-65.[5]《》.(4)[M].:,2002.[6]LagunaA,QuattaraA,GonzalezRO,etal.Asimpleandlowcosttechniquefordeterminingthegranulometryofupflowanaerobicsludgeblanketreactorsludge[J].WaterScienceandTechnology,1998,40(8):1-8.[7],.[M].:,2004.323-328.[8],,.[J].,2006,29(3):46-47.[9],,,.[M].:,2005.[10],,.[J].,2003,26(1):33-38.660