半连续餐厨垃圾与猪粪混合厌氧消化动力学研究吴燕

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*61003135℃。0.50.75gVS/L·d。0.75gVS/L·d0.78L/gVS51%。r2=0.97000.9355。0.75gVS/L·d。X799.3A0517-6611201120-12278-03KineticStudyofSemi-continuousAnaerobicCo-digestionwithKitchenWasteandPigWasteWUYanetalSchoolofEarthScienceandEnvironmentalEngineeringSouthwestJiaotongUniversityChengduSichuan610031AbstractTheanaerobicco-digestionofkitchenwasteandpigwastewasconductedinasemi-continuousmodeat35℃bygraduallyincreas-ingorganicloadingrateOLR.Theresultwasstudiedbyusingthefirst-levelandsecond-levelkineticmodels.ThedigestionexperimentshowedthattheprocessfromproducingoftheorganicacidtothemethanogenicphasecouldbereachedadynamicequilibriumbyOLRof0.5gVS/L·dand0.75gVS/L·d.ThemaximumvalueofbiogasyieldandtheaverageCH4contentunderOLRof0.75gVS/L·dwereabout0.78L/gVSand51%respectively.Thekineticanalysisshowedthatthestandarddeviationvalueabout0.9700ofthefirst-levelkineticmodelwasgreaterthanthatabout0.9355ofthesecond-levelwhichcouldbebetterdescribedthekineticprocessofthegasproduction.KeywordsAnaerobicco-digestionSemi-continuousKitchenwastePigwasteKineticmodel1986-。2011-03-3135020079000t1。。“”2。。。。30.51.01.5VFA。Callaghan4、。。535℃pH。VS3∶10.23L/gVS。A.Lehtomaki6、、。VS30%VSVS40%。BerndLinke7、VFA、TS、VS、。1.0g/L3.0g/LVFAVSykym。。11.14℃。、。1。1Table1CharacteristicsofsubstratesTestmaterialTS%VS%Moisturecontent∥%Ash%C/NKitchenwaste21.6388.978.3711.127.51Pigwaste7.5555.592.4544.526.181.2112.56L。8L。。。35℃。JournalofAnhuiAgri.Sci.2011392012278-1228012338DOI:10.13989/j.cnki.0517-6611.2011.20.0621Fig.1Schematicdiagramofsemi-continuousanaerobicdiges-tionsystem1.36L。。OLR0.5gVS/L·dOLR0.25。pH。2~3、VFA、。0.5gVS/L·d0.75gVS/L·d。1.4TS8CJ/T56—2004VS9108CJ/T75.2-2004VFA9pHpHS-25pHGC·7890A。22.1pHVFAVFACH4CO2。。20.50.75gVS/L·dpHVFA。pH7.3VFA240mg/L。VFApH67.124d。2VFA0.5gVS/L·d121572mg/L。VFACO2pH7.1。130.75gVS/L·dpH337.17.0。20.75VS/L·dVFA900~1400mg/L。VFA。VFApH。VFA。2pH7.11~12d0.5gVS/L·d12~37d0.75gVS/L·d.Note1~12dorganicloadis0.5gVS/L·d12~37dorganicloadis0.75gVS/L·d.2pH、VFAFig.2ThevariationofpHandVFAsconcentrationunderdif-ferentorganicloadswithtimeVFA1200mg/L。0.75gVS/L·d7850ml。2.2VFA。VS10。VFA。0.50.75gVS/L·dVFA、3。0.51~12d0.5gVS/L·d12~37d0.75gVS/L·d.Note1~12dorganicloadis0.5gVS/L·d12~37dorganicloadis0.75gVS/L·d.3VFA、Fig.3VFAsandthebiogasyieldbasedonVSfedwithdifferentloadsorganicgVS/L·dVFA240mg/L1572mg/L。60.5L/gVSN2CO2。pH0.5gVS/L·d130.75gVS/L·d。VFA1200mg/L。VFA。97221392030.75gVS/L·d330.75gVS/L·d2020.78L/gVS。CH450%57%。0.75gVS/L·d。4、、Fig.4Cumulativemethaneproductioncumulativebiogaspro-ductionandaveragemethanecontentwithdifferentloads42、。4。0.75gVS/L·d、0.5gVS/L·d0.75gVS/L·d。0.5、0.75gVS/L·d546354409ml38%51%0.50.75gVS/L·d38%51%。2.30.75gVS/L·d。dcdt=-k1cdyt=w1-e-k1t1dytdt=k2ye-yt2tyt=1k2ye2+tye21~2yttL/gVStdk1d-1wk2gVS/L·dyeL/gVS。MicrocalOrigin5。ω、κ1r20.8035、0.20670.9700κ2、yer20.2409、0.9799、0.9355。5Fig.5Thefittingcurveofdynamicsequationsyt=w1-e-k1t=0.8035×1-e-0.2067t3tyt=1k2ye2+tye=10.2409×0.97992+t0.979946r2r2。1t→+∞yt→wwyt0.75gVS/L·d0.78L/gVS3.0%。yeye25.63%。2。310.5gVS/L·d0.75gVS/L·dpH7.1VFA900~1400mg/L0.75gVS/L·d。20.75gVS/L·d、7850、4357ml0.78L/gVS。0.5gVS/L·d0.75gVS/L·d38%51%。0.75gVS/L·d。3yt=w1-e-k1t=0.8035×1-e0.2067tk1=0.2067。w0.8035L/gVS3.0%。。12338082212011。520108192030Fig.5Satelliteimageat2030onAugust19thin201044.1500hPa、、500hPa18200072h。200hPa192000~202000。850hPa192000202000。、、。4.2T639500hPa、、850hPa20202000~212000、。618200024h48、72h50.0~100.0mm72h212000。。62010818200024ha、48hb72hcT639Fig.6Precipitationforecastat24ha48hband72hcat2000onAugust182010512。2、、、。384h、、、。4、、、T639。1.2009829J.2011373276-284.2.2009717J.201127148-53.3.M.1999136-140.4.M.檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪1992.122801.J.20044659-62.2.“”J.200989-12.3.J.200834721-24.4CALLAGHANFJWASEDAJTHAYANITHYKetal.Co-digestionofwasteorganicsolidsbatchstudiesJ.BioresourceTechnology199967117-122.5.J.2007348-11.6LEHTOMAKIAHUTTUNENSRINTALAJA.Laboratoryinvestigationsonco-digestionofenergycropsandcropresidueswithcowmanureformethaneproductionEffectofcroptomanureratioJ.ResourcesCon-servationandRecycling200751591-609.7LINKEB.KineticstudyofthermophilicanaerobicdigestionofsolidwastesfrompotatoprocessingJ.BiomassandBioenergy200630892-896.8.CJ/T51-2004S.2005.9.M.1998535-537.10.M.2004.833212011

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