城市污水处理厂不同污泥厌氧消化的产气研究

42Vol.33No.32007(,100082),(35),,:218.8mL/(dL)339.2mL/(dL)419.4mL/(dL),3.5m3/m35.43m3/m36.71m3/m3,44.02%72.79%78.39%;CH4CO2;,:,()StudyonbiogasgenerationfromanaerobicdigestionofdifferentsludgeinmunicipalwastewatertreatmentplantDaiQianjin,LiYi,FangXianjin(BeijingGeneralMunicipalEngineeringDesign&ResearchInstitute,Beijing100082,China)Abstract:Inthispaper,excessactivatedsludge(EAS),primarysludge(PS)andmixedsludge(MS)fromonemunicipalwastewatertreatmentplantinBeijingwereselectedasthestudyobjects.Thebiogasgenerationrateandproductionwerestudiedcontrastivelyatmesophilicconditionof35.TheresultsindicatedthattheaveragedailyspecificbiogasyieldsofEAS,PSandMSwere218.8,339.2and419.4milliliterperliterofsludgerespectively,sothetotalyieldmightbe3.5,5.43and6.71m3/m3sludge.Itwasaccountablethat44.02%,72.79%and78.39%oftheoreticspecificbiogasgeneration,whichwascalculatedbycarbonbalancebeforeandafteranaerobicdigestionhavebeenrecoveredforEAS,PSandMSrespectively.TheCH4andCO2contentsinbiogasofthethreesludgesampleshadlessdifference.Thesequencesofbiogasgenerationvelocity,biogasproductionandsludgedigestibilityofthethreewereMSPSEAS.Inmunicipalwastewatertreatmentplant,theprimarysludge(ormixedsludge)wasmoreappropriatetouseanaerobicdigestiontechnologythanexcessactivatedsludge.Keywords:Excessactivatedsludge;Primarysludge;Mixedsludge;Anaerobicdigestion;Biogasgeneration,:();;,,©1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),,,,,1,pH,C/N(1216),,,(VS)CODCrC/N1/%/%VS/mg/LCODCr/mg/LpH/mg/L/mg/LC/N96.667.6112952278057.186084564.596.246.1930384331387.688176157.196.348.2932178354477.508865896.21.21.2.1,1():,15L,,,;,,(),,,13,(35),15L,16d(,16d[1]),9%1.2.2:;VS:;pH:pH(pHOmeterE350B);:;COD:;TOC:TOC;TN:2;:22.1()2,,1,1325mL/L,;4,420mL/L,1/3,,5,800mL/L©1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[1]7.95m3/m37.46m3/m38.56m3/m3,,44.02%72.79%78.39%,,,610m3/m3,1,C/N,,:,,,,,;,,,;,,,,,,,,32.2CH4CO22CH4,CO22CH4CO2CH4/%55.565.555.568.168.868.3CO2/%19.022.017.813.216.116.6©1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[1,2],29.8%35.2%36.8%,CODCr20%,[3,4]:,,,;C/N,4.5,,,VSVS,0.50.75L/g0.751.12L/gVS,VS,VS;VSVS,,VS,0.2L/g;VS,0.95L/g1.01L/g,,VS,0.68L/g,3(1)218.8mL/(dL)339.2mL/(dL)419.4mL/(dL),3.5m3/m35.43m3/m36.71m3/m3,44.02%72.79%78.39%(2)CH4CO2(3),:(4),(),1,,..,2006,22(23):95972ShimizuT,TamboN,KudoK,etal.HighefficientsewagewastewatertreatmentsystemconsistingoffluidizedbedpelletseparatorOaerobicbioreactorandanaerobicdigester.Journalofwaterwaste(Japan),1993,35:23303,,,..,1999,25(6):17214ZhaoHW,ViraraghavanT.AnalysisoftheperformanceofananaerobicdigestionsystemattheReginawastewatertreatmentplant.Bioresourcetechnology,2004,95:301307&:10008232:[phone]EOmail:[e-mail]:2006210218©1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.