厨余、猪粪和玉米秸秆厌氧共消化产气性能与微生物分析

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中图分类号：X71;X799.3 文献标志码：A 文章编号：1672-2043（2025）09-2396-11 doi：10.11654/jaes.2024-0928

Abstract：Anerobicdigestioisoneofthemainmodesoftreatmentandutilisationoforganicwasteinuralareas，ndinodertofurther improvetheutilsionofganicastendefncfaeobicdigestioIntisudyeivestigatedtetsofit mixtureratiosontheprocssandeficiencyofanaerobicdigestionthroughthecompoundingoffoodwaste，pigmanureandcorstover， measuredthebiogasproduction，methanecontent，rganicmaterdegradationandotherindexesanalysedthestructureandfuctionf microbialcommunities，andaalysedthesynergistic/antagonisticolesoficroorgansmsandtheirintrinsiclinksintheanerobicco digestionystem.Tesultssowedtatcompaedwithsinglesubstrateanaeobicdgestiondoublesubstrateanaerobicdigstiocould acceleratethehydrolysisofcidproductionintheearlystageofthereaction，andthemethaneyieldwasincreasedby18.46%～62.80 % ; the methaneproductionffectof riple-substrateanaerobiccodigestionwasnotignificantcomparedwiththatofdoublesubstratedigetion system; however，the stable pH and the low concentration of volatile faty acids in the triple-substrate digestion system made its stability andbueringperformancesuperiortothatofsingle-substrateanddoublesubstratedigestionsystems.Therelativeabundanceofthe acetate-typemethanogenicbacteriumMethanosaetawassignificantlyhigherinthetwo-andthr-substrateanaerobiccodigestion systemsthaninthesinglesubstratesystemadassyergistcallelatedtomostoftegenra.Therefore，theighestetaneprouction （ （372.29mL⋅g-1 ）was observed in a 1：1 mixture of pig manure and straw，and Chloroflexi in the three-substrate anaerobic co-digestion systemoffoodwaste，pigmanure，andstrawshowedasignificantpositivelycorelatedwithDesulfobacterota，Methanosaeta， MethanobacteriumandHalobacterota，whichouldsynergisticallpromotethdcompositionoforganicmaterandprovideutrietsfor methanogenic bacteria growth and metabolism.

Keywords ：food waste; pig manure; corn straw; material compounding; anaerobic co-digestion

我国是农业大国，每年产生畜禽粪便和农作物秸秆约30.5亿t和0.7亿t，其中猪粪和玉米秸秆各占约1/3[1-2] ，2021年我国厨余垃圾产生量为1.25～1.49亿t3]。（剩余19082字）