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ID:43478388
大小:1.51 MB
页数:27页
时间:2019-10-08
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1、WaterPollutionMadeby:TheSunWaterPollutionintroductionWaterpollutionisthecontaminationofwaterbodies(e.g.lakes,rivers,oceans,aquifersandgroundwater).Waterpollutionoccurswhenpollutantsaredischargeddirectlyorindirectlyintowaterbodieswithoutadequatetreatmenttoremoveharm
2、fulcompounds.Waterpollutionisamajorglobalproblemwhichrequiresongoingevaluationandrevisionofwaterresourcepolicyatalllevels(internationaldowntoindividualaquifersandwells).Ithasbeensuggestedthatitistheleadingworldwidecauseofdeathsanddiseases,andthatitaccountsforthedea
3、thsofmorethan14,000peopledaily.AllaboutWaterpollution2.influence3.solution1.CauseNowadays,waterpollutionisdeteriorating.Rivers,lakesandevenoceansallovertheworldarebecomingpollutedbygarbageanddangerouschemicals.OilandotherChemicalscankillfishandmakewaterunsafefordri
4、nking.Beforewethinkaboutwhatshouldwedotosolvethisproblem,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
5、污染物流入水体而形成2.Man-madepollutionindustrialwastewater(工业废水)Dailylifesewage(生活污水)Pesticideandfertilizerpollution(农业化肥污染)Thesedodamagetothequalityofwater.BACKWaterPollutiondistributionWaterpollutionisoneofthemostseriousproblemsthatmankindfacestoday.1.Forbusinessorindustr
6、y,itaffectsproducts’quality,increasedcorrosionofproducts,andsoon.2.Forindividual,itdoesdamagetothehuman’shealthy.Therearemanyinfluencethatwecan’tdescribethembywords.SoIwillshowyousomepictures.InfluenceDischargingsewageintowaterWaterhyacinth水葫芦Redtidereasonsofformre
7、dtideWatereutrophicationMeteorologicalandhydrologicalandphysicalandchemicalpropertiesoftheseaDamagesofredtideDamageHarmtohuman'shealthDestructionofMarinefisheryresourcesandaquaticproductsHarmtohumanhealthThegarbageinwaterBackWhatcanWeDo?WaterPollutionStopPollutionE
8、nvironmentalProtectionWaterConservationEveryonewantstoreducepollution.Butthepollutionproblemisascomplicatedasitisserious.Whatshouldwedotosolvethi
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