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1、哈尔滨工业大学工学硕士学位论文AbstractWiththeboomingconstructionofurbanwastewatertreatmentplantsinChina,theproblemofsludgetreatmentanddisposalemerged.Sludgesafedisposalandutilizationisthetrendofsludgetreatmentanddisposal.Sludgepyrolysisisoneoftheresearchhotpots,assludge
2、canproducebothusefulmaterialsandfuelsinthisprocess,meanwhile,partofcarboninsludgecanbestorageinsludge-chartomitigategreenhousegasesemission.Inthisstudymechanismsofsludgepyrolysis,modelingofcarbonemissioninsludgeprocessandassessingcarbonemissionofdifferent
3、sludgetreatmentanddisposalprocesswereconductedviaexperimentsandreviewingothers’researchinthisfield.First,gasandsolidproductsinsludgepyrolysisprocesswereanalyzedtoinvestigatethemechanismsofsludgepyrolysis.Second,thequantityofstablecarboninsludge-char
wasan
4、alyzedwith13CNMRandRamanSpectral.Theresultsindicatedthatthestablecarbonaccountedfor92.43%ofallthecarboninsludge-charmadeat650℃，andthemainformofcarbonwasaromaticcarbonandamorphousgraphitewiththearomaticityfa=93.94%.Throughinvestigatingthepyrolysismechanism
5、softhemaincomponentsof
sludgesuchaslignin,protein,fat,celluloseandsemicellulose,thepathwaysofformingpyrolysisproductscanbededuced.Themainreactionsinpyrolysisarefreeradicalcreationreaction,aliphaticchains’andOxygen-containedfunctiongroups’brokingdownreacti
6、ons,hydrogenationreactions,dehydrogenationreactions,condensationreactionsandcondensationpolymerization.Carbonemissionandsequestrationinsludgedrying-pyrolysisprocesscanbedividedintothreestages:drying,pyrolysisandsludge-charutilization.Whentreating1tonof20%
7、DSsludge，sludgeheatdrying-pyrolysisprocess’carbonemissionis501.98kgCO2e;sincethecarboninsludgeisneutral,theemissionis106.213kgCO2e.Sludgeheatdrying-incerationprocess’carbonemissionis486.586kgCO2e;since
thecarboninsludgeisneutral,theemissionis49.583kgCO2e.
8、Sludgesludgeaerobic
fermentationprocess’carbonemissionis28.083kgCO2e;sincethecarboninsludgeis
neutral,theemissionis24.083kgCO2e.Inthecomparisonofsludgeaerobicfermentation,sludgedrying-inceration,andsludgepyrolysis：t
