高固体浓度猪粪的厌氧发酵特性分析

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1、复旦大学硕士学位论文高固体浓度猪粪的厌氧发酵特性研究ABSTRACTOrganieagrieulturalwasteseanbeeonvertedintoeleanenergy，e.g.，biogas，throughanaerobiedigestion，anditsfinalProduetseanbemadefulluseresultinginlessenvironmentalPollutions.However，thecurrentlywidelyusedwetdigestionteehnolo郡requir

2、esla嗯eamountofdilutionwaterandprodueeswastewaterwithhigheoneentrationsofPollutants，whieheausedisadvantageouseffectsifbeingnotProPerlyaPPliedortreated..Highsoliddigestionofswinemanureat一mesophilie(35士IOe)andthermophilie(55士l“0)temPeratureswasinvestigatedinthi

3、sth6sis一TheeffeetsondigestionProeessofinoeulumeultivationanddosage，digestiontemPratures，TSeonientandotherfaetorswerestudiedtodeterminetheoptimumdigestioneondition.ThefollowingindicesweremainlyseleetedasassessmentParameters，includingbiogasyields，methaneeonten

4、ts，effeetivedigestiontime(Teff)andeffeetivebiogasProduetionrates(协ff)，andtotalsolids(TS)，volatilesolids四S)，totalehemiealoxygendemand(TCOD)removalrates.Inaddition，thekinetiemodelandrateeoeffieientsinanaerobiedigestionarnongtheseeonditionswereanalysedtomakethe

5、meehanismofthiseomPlicatedProeessmoreunderstood.TheresultsindicatedthatinereasinginoeulumdosageandinoeufumeultivationeouldshorteneffeetivedigestiontimeandimProvedbiogasProductionrates.TheoPtimumeonditionofthisstu即eouldbesummarizedasfollows:mesoPhilicdigestio

6、n，TS“15%andwithmatureddigestionresidueasinoeulum(20%inoeulationrate).Underthiseondition，thefinalbiogasandmethaneyieldswere357.4m吨一VSand266.2ml一C执/g一VSin60days，resPeetively.AndTS，VSandTCODremovalrateswere36.1%，48.5%and48.0%，resPectively.Its浅详eouldreaeh10.76ml

7、/g一VS/dwitheumulativebiogasyieldbeing81.3%offinalbiogasyieldwithinTe详of27days.FreeammoniaeoneentrationwasobservedtosignifieantlyaffeetdigestionProcessofswinemanureunderhighsolidcondtion.Duetoarn们。oniainhibition，thermoPhiliedigestionofswinemallureaehievedabou

8、t70%biogasyieldobtainedundermesoPhilieeonditionsatTSof15%.BasedonexPerimentalandsimulationresults，theinitialinhibitioneoneentrationoffreeammoniawasaboutl，100mg一N几，whiehPossiblyoecurredwhenTSeone