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1999,5(Suppl):113116Chin.J.Appl.Environ.Biol.1999210225:1999205219:19992072053(430074).,:,KAv,Kd01119d-1;,;,;,,,26.;;;X705SOMEDESIGNFORMULASFORTWOSTAGEAEROBICCOMPOSTINGPROCESSOFMUNICIPALREFUSECHENZhulei(WuhanUrbanConstructionInstitute,Wuhan430074)AbstractTwostageaerobiccompostingprocessisthatthermophilesandmesophilesareseparatelykeptatthetemperatureandatmospheresuitablefortheirownactivitiesinordertodecomposedifferentmaterialsofmunici2palrefuse.Basedonthemicroorganismkineticmodelandmaterialbalance,somedesignformulasforthetwostageaerobiccompostingprocessaredeveloped.Asfortheformulaofthebiodegradationofthefirststagefer2mentation,thereactionrateisfirstorderreactionforbiodegradablevolatilesolidsandtherateconstantkdis0.119d-1;asfortheformulaforthelossofcompostweightofthefirststagefermentation,thelossofcompostweightispositivelycorrelatedwiththeamountofbiodegradablevolatilesolidsandwatervapor;intheformulasforthevolumeofthefirststagefermentationdynamicreactorandfortheeffectiveareaofsecondaryfermentationfacility,theeffectsofthelossofcompostweight,densitychangeandthequantityofcompostrecycleareconsid2ered;intheformulaforthetheoryventilationquantityofthefirststagefermentation,theventilationquantityisdeterminedfromtheamountoforganicdecompositionandoutputofwatervapor.Keywordsmunicipalrefuse;aerobiccomposting;twostagefermentation;designformula,()()[1].,,[2].,,,[3].,,.1,,,,[4].,.RogerTimHang[5]Monod:dsdt=-KAvXKx+X(1),dsdt,K,Av(),X,Kx..,,,[6].KAV,,KAV,.,,XKx,(ds/dt=-KAV),.XKx,KAv,..1.,,,ds/dtS().dsdt=-KdS(2)(2),ss0dsS=-Kdt0dt,S/S0=e-kdt(3)S0/%Kd/d-1.,Kd=0.119d-1.[2],Kd=0.136d-1.(3),.2,,.,.Xvs,.,tWvs:Wvs=S0(1-W0)(1-Xvs)(4),S0,W0.,,tSt:St=S0(1-W0)(1-Xvs)(1-W0)-1(1-S0Xvs)-1(5):4115Xvs=(S0-St)/S0(1-St)(6),30%60%15%30%,(6)(Xvs)60%70%.W():W=W0F0-WtFt(7),F0,Ftt,Wtt.,:F0(1-S0)(1-W0)=Ft(1-St)(1-Wt)(8)(8)(7):WF0(1-W0)=(W01-W0)-(1-S01-St)(Wt1-Wt)(9)(9).,,,.,30%40%.,53%(1),(9),2.1Fig.1Thechangesofvolatilesolidsinthefirststagefermentation2Fig.2Effectofinputandoutputmoisturecontentsonwatervapor,.,F:F=2.76F0(S0-St)(1-W0)+1196F0(W0-Wt)+(10)(3)(10):F=2.76F0S0(1-eKdt)(1-W0)+1196F0(W0-Wt)+(11)(10)(11),.,,.,,.,8%9%.[2]600kg/m3650kg/m3,8.3%.,30%50%,6%10%.Vt,Vt=Ft/dt=(F0-&F)/d0(1+)(12),dt,d0,.,V:V=V0+Vt2tf(13),V0,f.VR,511Suppl:V=(V0+VR)+Vttf(14)R,(12):V=F0(1+)+(1+R)(F0-F)2d0(1+)tf(15)A:A=(1-R)(F0-F)d0(1+)Ht2(16),t2,H.3.,.,,,1kg1107kg,3184m3.S0Xvs,;(10)(11)F,Gm:Gm=3.84Wvs(17)Wvs,WvsF:Wvs=F0S0(1-W0)-(F0-F)St(1-Wt)(18)(18)(17):Gm=3.84[F0S0(1-W0)-(F0-F0)St(1-Wt)](19)(8),.=20100%,=5070,30%,2,,(3).50%60,.65%60,26.,,.,,,,,.3Fig.3Airquantityforinputmoisturecontentandgastemperatureofairoutlet111:,19882,11:,1990311:,19824RogerTimHang.CompostEngineeringPrinciplesandPractice.Michigan:AnnArborSciencePublishersInc,19805QuSH(),ChenSW()1Researchonmixedcompostofmunicipalsolidwastesandsewagesludge.EnvironmentalProtec2tion().1998,10:15166115