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AirPollutiondefinitionFormingconditionAirpollutionproblemDamagesafeguardBACKAirpollutiondefinition：Accordingtotheinternationalstandardorganization(ISO),thedefinitionofairpollutionusuallyreferstohumanactivityornaturalprocesscausecertainsubstancesintotheatmosphere,thenpresentaenoughconcentration,achieveenoughtime,andendangersthebody'scomfort,healthandwelfareorenvironmentalpollutionphenomenon.Inthedryandcleanatmosphere,tomeasurethecompositionofthegasisnegligible.Butinacertainrangeoftheatmosphere,therearesomesubstancethatnoappearingbefore,theamountanddurationofthesesubstance,islikelytoproduceadverseeffectandharmforpeople,animals,plantsandgoodsandmaterials.Whentheconcentrationofpollutantsintheatmospherereachharmfuldegree,evendestroytheecologicalsystemandhumandevelopmentofnormalconditions,causeharmtopeopleorthingsphenomenoncalledatmosphericpollution.ReasonofairpollutionThecauseofairpollution,bothnaturalfactorsandhumanfactors,especiallytheman-madefactors,suchasindustrialwastegas,combustion,automobileexhaustandnuclearexplosion.Withtherapiddevelopmentofhumaneconomicactivityandproduction,consumealargeamountofenergy,atthesametime,itwilloutputalotofwastegas,dustmaterialtodischargedintotheatmosphere,theseseriouslyaffectthequalityoftheatmosphericenvironment,Particulatematter：Sulfuroxide：OxycarbideOxynitride：HydrocarbonOtherhazardoussubstanceBACKTheblacklistofairpollutionAirpollutionproblemGreenhouseeffectBACKDust-hazeAcidrainOzoneholeFuelcontainsavarietyofcomplexcomponents,produceallkindsofharmfulsubstancesafterburning,evenexcludingfuelimpuritiestoachievecompletecombustion,alsowanttoproducewaterandcarbondioxide,andbecauseoffuelcombustiontotheincreasingconcentrationofcarbondioxideintheatmosphere,destroythebalanceofthenatureofcarbondioxide,thatcouldtriggeragreenhouseeffect,theearth'stemperaturetorise.Concentrationofcarbondioxideintheatmosphereincreases,preventtheearth'sheatloss,canfeelthetemperatureriseintheearth,whichbecameknownasthegreenhouseeffect.Destroytheinfraredradiationnormalrelationsbetweentheatmosphereandtheground,absorbtheearthreleaseinfraredradiation,likegreenhouse,pushingearthtemperaturesofgasarecalledgreenhousegases.GreenhouseeffectThegreenhouseeffectwillenablepolaricetomeltMaldivesBACKPH＜5.65AcidrainBACKTajMahalStatueoflibertyAntarcticPoleTajMahalchangecolorMarblecontainsalotofcalciumThetajmahalinIndia,becauseofairpollutionandacidraincorrosion,marbleloseluster,colorgraduallybecomerusty.BACKStatueoflibertyBACKAcidrainhasalsoacorrosiveactiononmetals,culturalrelics.,forexample,thefamousstatueoflibertyinNewYorkharborintheUnitedStates,reinforcedconcreteonthincopperduetoacidrain,becomeloose,soithavetobeoverhauledAntarcticpoleBACKTheGreatWallStationhousesandtowerisrustilyintolayerpeeling,somehadtobeupdated.Inordertoslowdownthecorrosion,paintbrush2-3timeseveryyear.OzoneholeOzoneholeisduetoairpollution,thediffusionanderosionoftheaerosolpollutants，especiallythenitrogenoxideandhalogenatedhydrocarbon，causedthedestructionandreductionoftheatmosphericozonelayerCan'tabsorbultravioletradiationBACKDust-hazeGrayhaze,alsoknownasatmosphericbrownclouds,inthegroundmeteorologicalobservationrulesoftheChinameteorologicaladministration,theashhazeisdefinedlikethis:alotofverysmalldrydustparticlesfloatingintheairevenly,makethehorizontalvisibilityoflessthan10kmairturbidityphenomenaandmakethedistancelightmicrostripyellow,red,makedarkmicrostripblue.DamageBACK一、TheharmtohumanbodyhealthRespiratorydiseases二、TheharmtoindustrialandagriculturalproductionAtmosphericpollutantstotheharmofindustrialbasicallyhastwokinds:oneistheatmosphereofacidicpollutantsandso2,no2,etc.,causingcorrosionforindustrialcorrosionofmaterials,equipmentandfacilities;2ashmakeadverseeffectsonprecisioninstrumentsandequipmentproduction,installation,debugginganduse.fromaneconomicpointofview，Atmosphericpollutiontotheharmofindustrialproductionincreasethecostofproduction,improvethecostandshortentheservicelifeoftheproduct.Airpollutionalsocausedgreatharmtoagriculturalproduction.Acidraincandirectlyaffectthenormalgrowthofplants,andcanpenetrateintothesoilandintothewater,causingsoilandwateracidification,toxicingredientsdissolution,produceharmtoanimalsandplantsandaquaticorganisms.EvenSeriousacidmakerainforestdeclineandmakefishtobecomeextinct三、theinfluenceofatmosphereandclimateAcidrainozoneholeGreenhouseeffectSafeguardprocedures1、Reducepollutantemissions.Reformtheenergystructure,usemorepollution-freeenergyandlowpollutionenergy,preprocessingoffuel,improvecombustiontechnology,etcallcanreduceemissions.Inaddition,beforethepollutantsintotheatmosphere，usedustsmokeabatementtechnology,condensingtechnology,liquidabsorptiontechnology,recyclingtechnologytoeliminatepartsoftheexhaustgaspollution2、Controlemissionsandmakefulluseofatmosphericself-purificationability.Differentmeteorologicalconditions,thecapacityoftheatmosphericpollutantsisdifferent,ifdischargeintothesameamountofpollutants,thepollutantconcentrationisdifferent.Forwind,goodventilation,turbulence,strongconvectionareaandtime,atmosphericdiffusion