环保知识宣传ppt模板之垃圾回收与环境保护pptonplas

PLASTIC

ON

ENVIRONMENT!!!1INTRODUCTIONPlasticisthegeneralcommontermforawiderangeofsyntheticorsemisyntheticorganicsolidmaterialssuitableforthemanufactureofindustrialproducts.Plasticsaretypicallypolymersofhighmolecularweight,andmaycontainothersubstancestoimproveperformanceand/orreducecosts.

Plasticisoneofthefewnewchemicalmaterialswhichposeenvironmentalproblem.Polyethylene,polyvinylchloride,polystyreneislargelyusedinthemanufactureofplastics.

2TYPESOF

PLASTICPRODUCTSPLASTICBAGSPLASTICCOATINGSPLASTICFURNITUREPLASTICSHEETSPLASTICFITTINGSPLASTICTANKSPLASTICTOYSPLASTICBUCKETSPLASTICSANITARYWAREPLASTICSTATIONERY34

PLASTIC’SADVERSEEFFECTSONOUR

ENVIRONMENT

1}Plasticpollutebeaches&oceans

Garbagehasbeendiscardedintotheoceansforaslongashumanshavesailedthesevenseasorlivedonseashoresornearwaterwaysflowingintothesea.Sincethe1940s,plasticusehasincreaseddramatically,resultinginahugequantityofnearlyindestructible,lightweightmaterialfloatingintheoceansandeventuallydepositedonbeachesworldwide52}PlasticbagslitterthelandscapeOncetheyareused,mostplasticbagsgointolandfill,orrubbishtips.Eachyearmoreandmoreplasticbagsareendinguplitteringtheenvironment.Oncetheybecomelitter,plasticbagsfindtheirwayintoourwaterways,parks,beaches,andstreets.And,iftheyareburned,theyinfusetheairwithtoxicfumes.

63}PlasticbagskillanimalsAbout100,000animalssuchasdolphins,turtleswhales,penguinsarekilledeveryyearduetoplasticbags.Manyanimalsingestplasticbags,mistakingthemforfood,andthereforedie.Andworse,theingestedplasticbagremainsintactevenafterthedeathanddecompositionoftheanimal.Thus,itliesaroundinthelandscapewhereanothervictimmayingestit.

74}Plasticbagsare

non-biodegradableAndoneoftheworstenvironmentaleffectsofplasticbagsisthattheyarenon-biodegradable.Thedecompositionofplasticbagstakesabout1000years.8PLASTIC’SEFFECTONHUMANLIFEPlasticplaysthevillainrightfromthestageofitsproduction.Themajorchemicalsthatgointothemakingofplasticarehighlytoxicandposeseriousthreattolivingbeingsofallspeciesonearth.

Someoftheconstituentsofplasticsuchasbenzeneareknowntocausecancer.Plasticresinsthemselvesareflammableandhavecontributedconsiderablytoseveralaccidentsworldwide.

9Onceplasticisproduced,theharmisdoneonceandforall.Plasticdefiesanykindofattemptatdisposal–beitthroughrecycling,burning,orlandfilling.Whenyourecycleahazard,youcreateahazard.

Recyclingofplasticisassociatedwithskinandrespiratoryproblems,resultingfromexposuretoandinhalationoftoxicfumes,especiallyhydrocarbonsandresiduesreleasedduringtheprocess.10MEASURES1.Single-useplasticbagshavebecomesuchaubiquitouswayoflifethatitseemsasifwesimplycannotdowithoutthem.However,ifwehavethewill,wecanstartreducingtheiruseinsmallways.2.Atotebagcanmakeagoodsubstituteforholdingtheshopping.Youcankeepthebagwiththecahier,andthenputyourpurchasesintoitinsteadoftheusualplasticbag.11MEASURES3.Recyclingtheplasticbagsyoualreadyhaveisanothergoodidea.Thesecancomeintouseforvariouspurposes,likeholdingyourgarbage,insteadofpurchasingnewones.4.Whilegovernmentsmaybeworkingoutwaystolessentheimpactofplasticbagsontheenvironment,however,eachofusshouldshouldersomeoftheresponsibilityforthisproblem,whichult