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1、CHAPTER4PHYSICAL,CHEMICAL,ANDBIOLOGICALPROPERTIESOFMUNICIPALSOLIDWASTE4-1PHYSICALPROPERTIESOFMSWImportantphysicalcharacteristicsofMSWincludespecificweight,moisturecontent,particlesizeandsizedistribution,fieldcapacity,andcompactedwasteporosity.SpecificWeightSpecificW
2、eightisdefinedastheweightofamaterialperunitvolume.BecausethespecificweightofMSWisoftenreportedasloose,asfoundincontainers,uncompacted,compacted,andthelike,thebasisusedforthereportedvaluesshouldalwaysbenoted.Specificweightdataareoftenneededtoassessthetotalmassandvolu
3、meofwastethatmustbemanaged.Unfortunately,thereislittleornouniformityinthewaysolidwastespecificweightshavebeenreportedintheliterature.Frequently,nodistinctionhasbeenmadebetweenuncompactedorcompactedspecificweights.TypeofwasteSpecificweight,lb/yd3Moisturecontent,%bywe
4、ightrangetypicalrangetypicalResidential(uncompacted)foodwaste220-81049050-8070paper70-2201504-106cardboard70-135854-85plastics70-22011001-42textiles70-1701106-1510rubber,170-3402201-42leather170-4402708-1210yardwastes170-38017030-8060wood220-54040015-4020glass270-81
5、03301-42Tincans85-2701502-43Aluminum110-4052702-42Othermetal220-19405402-43Dirt,ash,etc.540-16858106-128Ashes1095-140012556-126rubbish150-3052205-2015TypeofwasteSpecificweightMoisturecontent,%byweightrangetypicalrangetypicalResidentialyardwastes)Leaves(looseanddry)5
6、0-25010024-0-4030Greengrass(looseanddry)350-5040040-8060Greengrass(wetandcompacted)1000-1400100050-9080yardwaste(shredded)450-60050020-7050yardwaste(composted)450-65055040-6050municipalIncompactortruck300-76050015-4020InlandfillNormallycompacted610-84076015-4025Well
7、compacted995-1250101015-4025TypeofwasteSpecificweightMoisturecontent,%byweightrangetypicalrangetypicalcommercialFoodwaste(wet)800-160091050-8070appliance250-3403050-21Woodencrates185-27018510-3020Treetrimmings170-30525020-8050Rubbish(combustable)85-30520010-3015Rubb
8、ish(noncombustable)305-6105055-1510Rubbish(mixed)235-30527010-2515ConstructionanddemolitionMixeddemolition(combustable)Mixeddemolition(unc
