空气污染-水污染-大气污染的介绍(英文)ppt课件.ppt

OurCountry’sEnvironmentalProblemsWordFocal焦点的
Quota定额
Coordinate使协调
Emission发射
Afforestation造林
Adsorption吸附
Photosynthesis光合作用
Phosphorus磷
Filtration过滤
Biodegradable能被细菌分解的
Trash垃圾
Consumption消耗
Rectification改正WastePollutionWATERPOLLUTIONThefourbasicnaturalresourcesarewater,air,landandenergy.Weneedwaterformultipleusesandacertainqualityisrequired.Itsuseleadstothegenerationofwastewaterthatcancauseanimpactontheenvironment.
水，空气，土地和能源是四个基本的自然资源。水的用途多种多样，而且要求其达到一定的标准。但是，由于人类使用而产生的污水造成了对环境的影响。Approximately300millionnationwidehavenoaccesstocleanwater.Furthermore,over700millionChinesedrinkfetidwaterbelowWorldHealthOrganizationstandards.Almost90%ofundergroundwaterincitiesisaffectedbypollutionand80%ofChina’sriversfailtomeetstandardsforfishing.Almostallofthenation'sriversareconsideredpollutedtosomedegreeandhalfofthepopulationlacksaccesstocleandrinkingwater.Ninetypercentofurbanwaterbodiesareseverelypolluted.

全国约有3亿人使用不上干净的水，此外，有超过7亿中国人饮用的水没能达到世界卫生组织的标准，几乎90%的城市地下水受到污染，80%的中国河流不符合捕鱼标准，某种程度上说，几乎所有的河流都受到某种程度的污染，一半的人口缺少干净的饮用水，90%的城市水体受到严重污染。ShuiYuBingevents水俣病事件（1953-1956）Japan
bonepaindiseaseevents骨痛病事件（）1955-1963）Japan
poisonoussubstancescontaminatetheRhineevents剧毒物质污染莱茵河事件1986Switzerland,Germany,FranceAirPollutionPollutantsSecondarypollutants:notemitteddirectly,theyareproduced
whenprimarypollutantsreactorinteract.
Animportantexampleofasecondarypollutants
isgroundlevelozone,itisoneofthemany
secondarypollutantsthatmakeup
photochemicalsmog.
Majorpollutantsproducedbyhumanactivityinclude:IndoorairpollutionCountermeasuresGarbagePollutionAirPollution