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时间:2020-04-21
《菌渣厌氧发酵制取沼气研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、山东农业科学2014,46(2):77—81ShandongAgriculturalSciences菌渣厌氧发酵制取沼气研究姚利,袁长波,王艳芹,曹德宾,边文范,杨光(山东省农业科学院农业资源与环境研究所,山东济南250100)摘要:以酒糟菌渣为原料,在实验室内利用自行设计的发酵装置进行了批次发酵试验,探讨了菌渣厌氧发酵的产沼潜力及影响因素,并在农户沼气池内进行了应用试验。结果表明:菌渣经过适当处理可实现高效发酵产出沼气,原料产气率可达0.133m/kg干物质,产气潜力约为秸秆的一半,但菌渣产沼气具有预处理方式简便、启动迅速等优点。菌渣产沼气的最
2、佳参数为:将菌渣和牛粪以7:3的配比(以干物重计)制作发酵原料,发酵原料、沼液、水以5:3:2的比例(按重量计)混合,堆沤预处理3~5d后,投入发酵装置,添加10%的鸡粪沼液为接种物启动发酵。菌渣用于农户沼气池发酵产气可行,气温较高的季节可满足农户日常生活所需,应用时宜采取分批进料方式。关键词:菌渣;厌氧发酵;沼气中图分类号:$216.4文献标识号:A文章编号:1001—4942(2014)02—0077—05StudyonBiogasProductionbyAnaerobicFermentationofFungiResidueYaoLi,Yua
3、nChangbo,WangYanqin,CaoDebin,BianWenfan,YangGuang(InstituteofAgriculturalResourcesandEnvironment,ShandongAcademyofAgriculturalSciences,Jinan250100,China)AbstractWithvinassefungiresidueastherawmaterial,thebatchfermentationexperimentswerecar-riedoutusingfermentationdeviceinlabo
4、ratory.Themethaneproductionpotentialandinfluencingfactorsoffungiresidueanaerobicfermentationwerediscussed,andtheapplicationexperimentswerecarriedoutinruralhouseholdbiogasdigesters.Theresultsshowedthatthefungiresidueafterpropertreatmentcouldachieveeffi·cientfermentationtoprodu
5、cebiogas;therawmaterialbiogasratecouldbeupto0.133m/kgofdrymatter,andthebiogasproductionpotentialwasabouthalfofthatofstraw.Usingfungiresiduetoproducebiogashadtheadvantagesofsimplepretreatmentmethodandrapidstart.Theoptimalparametersofusingfungiresiduetoproducebiogaswereasfollow
6、s.TherawfungiresiduewasmixedwithCOWdungattheratioof7:3fdryweight)toproducethefermentedmaterial;thefermentedmaterial,biogasslurryandwaterweremixedattheratioof5:3:2byweight;afterpileofrettingpretreatmentfor3—5days.andadding10%ofchickenmanurebiogasslurry,thefermentationstarted.U
7、singfungiresidueforhouseholdfermentationtoproducebiogaswasfeasible,whichcouldmeetthedailyneedsofhouseholdintheseasonswithhighertemperature;thefed—batchmannershouldbeadoptedduringthehouseholdapplication.KeywordsFungiresidue;Anaerobicfermentation;Biogas在食用菌生产中会产生大量废弃栽培料即缺乏,大量菌渣
8、被随意堆放丢弃,易滋生有害菌渣,若按70%生物效率计算,我国每年约有600生物,威胁食用菌生产并对环境造成新的污染。多万吨食用菌废料。由
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