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1、HazardousandToxicWasteEnvironmentalconcernsandheathproblemsofhazardouswaste;toxicityanditsmeasurementLearningoutcomesWhenyouhavestudiedtheinformationinthislectureyoushouldbeableto:DefinesolidwasteandcomparesolidwastedisposalmethodsIdentifythesourcesoftoxicwasteIdentifymajorenvironmentaltoxinsE
2、xplaineffectoftoxicpollutantsExplainhowwasteisclassifiedTopicsSolidWasteToxicityClassificationandCharacteristicsofwastePharmaceuticalWastesHazardouswastemanagementWhatisSolidWaste?Theterm''solidwaste''meansanyrefuse,sludgefromawastetreatmentplant,watersupplytreatmentplant,orairpollutioncontrol
3、facilityandotherdiscardedmaterial,includingsolid,liquid,semisolid,orcontaininggaseousmaterialresultingfromindustrial,commercial,mining,andagriculturaloperations,andfromcommunityactivities,butdoesnotincludesolidordissolvedmaterialindomesticsewage.TypesofSolidWastesMunicipalSolidWaste(MSW)-what“
4、we”producedailyHazardousWasteAsubsetofsolidwasteIndustrialWasteAgriculturalWasteMiningWasteMedicalWasteAirPollutionControlResidualsWWTPresidualsOrganicandbacteriaresiduefromwasteWTPresidualsMainlymetallicsaltHowDoYouManageSolidWaste?PreventMinimizeRecycleCompostWastetoEnergyLandfillWastePreven
5、tionandSourceReductionRe-engineeringofaproductorprocessUselesspackagingRe-useDonotletthematerialenterthewastestreaminthefirstplaceConsumelessmaterialsExample:Double-sidedprintingRecyclingTakingadiscardedproductandusingtomakeanewproductSameasfirstoneAnentirelynewproductExamples?Recycledmunicipa
6、lsolidwastecomponentsFibersNewspaperCardboardOfficePaperContainersGlassPlasticMetalMajorMarkets:Newpaperproducts,otherproducts(e.g.insulation)RecycledmunicipalsolidwastecomponentsFibersNewspaperCardboardOfficePaperContainersGlassPlasticMetalCommonlyrecycledplastics再生塑料PET(polyethyleneterephtha
7、late)Originaluse:BeveragebottlesRecycleduse:Carpetfibres,insulationHDPEOriginaluse:milk,juicebottlesRecycleduse:oilandsoapbottles,drainpipesPVCOriginaluse:foodwraps,bottlesRecycleduse:floortiles,trafficconesLDPEOriginaluse:binbags,wraps
