低温热处理对剩余污泥有机物溶出及脱水性能改变的影响彭永臻

43320173JOUＲNALOFBEIJINGUNIVEＲSITYOFTECHNOLOGYVol．43No．3Mar．201710012410～80min50～90℃、SCSP．SCOD、SCSP90℃、80min90℃、70min70℃、40min15.5、19.25.2．50～90℃SC163u2.5uSP1.41u0.26u．CSTCST80℃70℃、80min108.8s90℃、80min375.7s．70℃、30min．X703A0254－0037201703－0473－08doi10．11936/bjutxb20160700232016-07-11514780131949—、[e-mail]ThermalTreatmentonOrganicMatterSolubilizationandDewaterabilityChangeofWasteActivatedSludgePENGYongzhenGUOSiyuLIXiyaoHEYuelanGAOYaoyuanLILukaiKeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentＲecoveryEngineeringEngineeringＲesearchCenterofBeijingBeijingUniversityofTechnologyBeijing100124ChinaAbstractInordertoimprovethehydrolysisstepintheprocessofexcesssludgeanaerobicdigestionstaticbatchtestwasconductedtoinvestigatetheeffectoflowtemperaturetreatmentontheactualdomesticsludgegenerated．Theresearchwastoinvestigatetheeffectoflowtemperatureonorganicmattersolubilizationsolublecarbohydratesandsolubleproteinmolecularweightchangesandthechangesofdewaterabilityontheconditionthatthetreatedtimebetween10and80minandthetreatedtemperaturebetween50and90℃．Theresultsshowthattheconcentrationofsolublechemicaloxygendemandthesolublecarbohydratesandthesolubleproteingetthehighestconcentrationon80minand90℃70minand90℃40minand70℃increase15.5times19.2timesand5.2timestotherawsludgerespectively．Intherangeof50－90℃throughgelpermeationchromatographymethodforanalyzingmolecularweightoftheSCandSPtheresultsshowthatminimummolecularweightoftheSCchangedfrom163uto2.5uandSPchangedfrom1.41uto0.26uwiththeriseoftemperatureandtime．2017CapillarysuctiontimeCSTwasinvestigatedtoevaluatethesludgedewaterabilityandthevalueofCSThavesignificantriseafter80℃increaseto108.8son80min70℃andincreaseto375.7son80minand90℃．Accordingtotheaboveresearchtherecomesaconclusionthattheoptimumconditionis70℃and30minutes．Keywordswasteactivatedsludgelowtemperaturethermaltreatmentorganicmattersolubilizationmolecularweightcapillarysuctiontime．50%～60%1．、．、、2．、、、3．、3．、4-5．6．、、、、、78-9．．Kepp10Barjenbruch1140～180℃60～180℃．12170℃、30minTCOD38.11%56.8%TCOD160mL250mL．Bougrier13190℃COD52%64%190℃25%．．．．Climent14．Liao1570℃、30minSCOD52.513%TCOD11%22d15d．Ferrer1670℃30%5%．．SCSPSCSP90℃SP．．50～90℃、10～80min．SCSP4743．11.1ρC/ρN24hTS20000～25000mg/L．1CSTTCODSCODSCSPVS．1Table1CharacteristicsofsewagesludgeCST/sρTCOD/mg·L－1ρSCOD/mg·L－1ρSC/mg·L－1ρSP/mg·L－1ρTS/mg·L－1ρVS/mg·L－120～3015000～20000130～1805～1013～1820000～2200016000～180001.2500mL50、60、70、80、90℃．10、20、30、40、60、80minCST、TCOD4000r/min10min0.45μmSCOD、SCSP．1.3TSVSCOD5B-3BCODSC－SPBradfordSK3041．CST304M．GPCHPLChigh-performanceliquidchromatographyWatersCo.USA25020001mL/min40℃35℃．24000、40000、79000、160000、340000、570000、850000uMwy=－0.4045x+11.597y=lgMwx17-18disintegrationdegreeDDDDDD=ρSCODafter－ρSCOD0ρTCOD0－ρSCOD0×100%ρSCODafterCODρTCOD0CODρSCOD0COD．22.1150℃1.6%3.3%．60～90℃40min60、70、80、90℃6.6%、10.2%、10.7%13.2%80min9.9%、11.5%、11.6%15.1%40min．1Fig．1Effectofdifferenttimeandtemperatureonsludgedisintegrationdegree2350℃SCSP80min99.9%154.7%．574201760～90℃SCSPSC、SP．60、70、80、90℃40minSC570.7%、1388.9%、1441.8%1924.5%80minSC40min1.4、1.1、1.20.9．90℃、40minSC．50～80℃19．SPSC60、70、80、90℃30minSP341.2%、328.3%、523.8%279.5%80minSP30min1.1、0.9、0.70.7SP．80～90℃SP70℃80℃SP、、、SP20．2SCFig．2Effectofdifferenttimeandtemperatureontheconcentrationofsolublecarbohydrates2.2＜15ku21HPLCSCSP．ＲTMwy=－0.4045x+11.597y=lgMwx3SPFig．3Effectofdifferenttimeandtemperatureontheconcentrationofsolubleprotein．210～80minSC．212994u10.99．50～70℃163u250℃、10min0.2170℃、80min1.25495%．50、60、70℃198%、72%69%70℃60℃60℃50℃．80℃32.25u．8090℃0～40min340min1233．SC．．3SP．11839u10.0009．50～80℃10、20min22.47u1.41u2367432SCTable2MolecularweightofSCindifferentcondition/minMw/uO/℃5060708090112994.000.9902163.00—32.25—112994.001.621.561.521.101.10102163.000.210.350.470.420.5132.25————0.16112994.001.791.531.631.581.19202163.000.230.490.550.480.3632.25———0.330.15112994.001.871.611.621.591.02302163.000.290.610.640.680.4732.25———0.370.15112994.002.161.641.661.671.28402163.000.310.810.980.830.3532.25———0.40.17112994.002.351.671.671.361.36602163.000.430.860.960.890.4032.25———0.450.19112994.001.971.711.681.011.20802163.000.650.941.251.150.5932.25———0.500.2030min0.26u4．450～80℃110～60min174、55、626380min12、34．．SP．80、90℃80℃470℃90℃SPSP．33SPSP、、、20．2.3capillarysuctiontimeCST．22．SCSP．SCSP23．SCSP24-25．SCSP77420173SPTable3MolecularweightofSPindifferentcondition/minMw/uO/℃5060708090111839.000.0009022.47—31.41—40.26—111839.000.01650.03080.0330.03340.02211022.470.00080.00250.00510.00810.000731.410.00760.00220.0010.0003—40.26—————111839.000.01680.04260.04680.03640.02632022.470.03760.03220.03320.00950.000931.410.02930.03510.02740.0026—40.26—————111839.000.01850.04430.05030.03570.01893022.470.01960.04130.04980.01950.007.031.410.03270.03950.03190.0146—40.260.00450.01810.01110.0046—111839.000.02310.04890.05230.04280.03294022.470.05020.04510.05580.0321—31.410.04150.04520.04410.0222—40.260.02310.01290.01000.0042—111839.000.06820.05020.05620.05680.02386022.470.01610.05460.05620.03810.004531.410.04750.05540.04850.03010.002040.260.02490.024