WaterPollution水污染英文课件.pptx

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1、WaterPollutionMadeby:TheSunWaterPollutionintroductionWaterpollutionisthecontaminationofwaterbodies(e.g.lakes,rivers,oceans,aquifersandgroundwater).Waterpollutionoccurswhenpollutantsaredischargeddirectlyorindirectlyintowaterbodieswithoutadequatetreatmenttoremoveharmfulcompo

2、unds.Waterpollutionisamajorglobalproblemwhichrequiresongoingevaluationandrevisionofwaterresourcepolicyatalllevels(internationaldowntoindividualaquifersandwells).Ithasbeensuggestedthatitistheleadingworldwidecauseofdeathsanddiseases,andthatitaccountsforthedeathsofmorethan14,

3、000peopledaily.AllaboutWaterpollution2.influence3.solution1.CauseNowadays,waterpollutionisdeteriorating.Rivers,lakesandevenoceansallovertheworldarebecomingpollutedbygarbageanddangerouschemicals.OilandotherChemicalscankillfishandmakewaterunsafefordrinking.Beforewethinkabout

4、whatshouldwedotosolvethisproblem,weshouldfirstknowwhatcausetheproblem.Cause1.NaturalpollutionDuetothedissolutionofgeological,atmosphericprecipitationleaching,erosionontheground,mixthevariouspollutantsintothewater因地质的溶解作用，降水对大气的淋洗、对地面的冲刷，挟带各种污染物流入水体而形成2.Man-madepollutionind

5、ustrialwastewater(工业废水)Dailylifesewage(生活污水)Pesticideandfertilizerpollution（农业化肥污染）Thesedodamagetothequalityofwater.BACKWaterPollutiondistributionWaterpollutionisoneofthemostseriousproblemsthatmankindfacestoday.1.Forbusinessorindustry,itaffectsproducts’quality,increasedcor

6、rosionofproducts,andsoon.2.Forindividual,itdoesdamagetothehuman’shealthy.Therearemanyinfluencethatwecan’tdescribethembywords.SoIwillshowyousomepictures.InfluenceDischargingsewageintowaterWaterhyacinth水葫芦RedtidereasonsofformredtideWatereutrophicationMeteorologicalandhydrolo

7、gicalandphysicalandchemicalpropertiesoftheseaDamagesofredtideDamageHarmtohuman'shealthDestructionofMarinefisheryresourcesandaquaticproductsHarmtohumanhealthThegarbageinwaterBackWhatcanWeDo?WaterPollutionStopPollutionEnvironmentalProtectionWaterConservationEveryonewantstore

8、ducepollution.Butthepollutionproblemisascomplicatedasitisserious.Whatshouldwedotosolvethi