上流式厌氧污泥床（UASB）生物反应器颗粒中的微生物动力学响应基质饲料的短期变化

上流式厌氧污泥床（UASB）生物反应器颗粒中的微生物动力学响应基质饲料的短期变化Downloadedfromwww.microbiologyresearch.orgbyIP:58.23.111.250On:Sat,20Apr201901:13:24Microbialdynamicsinupflowanaerobicsludgeblanket(UASB)bioreactorgranulesinresponsetoshort-termchangesinsubstratefeedWilliamP.Kovacik,Jr,13JohannesC.M.Scholten,1DavidCulley,1RobertHickey,2WeiwenZhang14andFredJ.Brockman1CorrespondenceWeiwenZhangWeiwen.Zhang@asu.eduReceived26November2009Revised27April2010Accepted28April20101MicrobiologyDepartment,PacificNorthwestNationalLaboratory,Richland,WA99354,USA2Ecovation,Inc.,Victor,NY14564,USATheupflowanaerobicsludgeblanket(UASB)reactorisamicrocosmforthemethanogenicdegradationoforganicmatterinanaerobicenvironments,anddependsontheauto-formationofdense3Dbiofilmsof1–3mmindiameter,referredtoasgranularsludge(biogranules).PastresearchhasshownthatUASBandothermethanogenicreactorsareextremelystablefunctionally,buttheunderlyingbasisofthefunctionalstabilityisnotwellunderstood.Inthisstudy,microbialdynamicsinthecommunitiesresidinginUASBbio