Social problem
Cause of environmental problems
? The pollution of nature itself ? Human’s production and life activities ? Human development and construction activities ? The population pressure on the environment
Major environmental pollutions
? ? ? ? Water pollution Air pollution Solid waste pollution Other pollutions : Noise pollution Electromagnetic pollution, Light pollution Thermal pollution Radioactive pollution
Water pollution
Ground water pollution
? Ground water pollution ? Underground water pollution ? Ocean pollution
Rivers and lakes
Green algae outbreak
Underground water pollution
? With water under the earth surface
Two main characteristics : hidden and recovery difficult
Ocean pollution
Cause of ocean pollution
Pollutants discharged into the ocean more than self-purification capacity of the ocean
Damage of water pollution
Patients with endemic goiter地 方性甲状腺肿患者
Mercury induced fetal Minamata patients 汞引起的胎儿性水俣病患者
Dental fluorosis 氟斑牙
Air pollution
? ? ? ? The air is very important to human without food 5 weeks without water 5 days without air only 5 minutes
Air Pollution Sources
? ? ? ?
Industrial pollution Agricultural pollution Transportation pollution Life Source
Industrial pollution
thermal power
Steel factory
Chemical Plant
Transportation pollution
Life source
Refers to because of the daily needs for cooking heating, bathing and other activities that emission SO2, NOX and other pollutants into the atmosphere
Damages of air pollutions
? To human beings :acute poisoning, chronic poisoning, cancer ? To industrial and agricultural production :cause acid rain ? On the atmosphere and climate: Concentration of carbon dioxide which leads to greenhouse effect, is the most important influence on the global climate
Global warming
acid rain
Mechanism of acid rain
Soil pollution and solid waste pollution
? Can be attributed to include irrigation, industrial waste, municipal waste and animal manure in agricultural use, improper application of fertilizers, and so on
The danger of soil pollution
? damage plant roots ? lead to genetic variation ? endanger human health
Solid waste pollution
? the man in the production process and the social life of discarded solid or semi-solid material ? Sources of solid waste Industrial waste Solid waste of life Agricultural waste Radioactive waste
Solid waste
Other pollutions
? ? ? ? ? Noise pollution Electromagnetic pollution light pollution Thermal pollution Radioactive pollution
Electromagnetic pollution
light pollution
Thermal
pollution
Radioactive pollution
Reference
? http://baike.baidu.com/view/717
  44.htm ? http://www.tyzx.com.cn/lsjy/hbkt/hjwrdwh.ppt ? http://baike.baidu.com/view/424
  13.htm?fr=ala0 _1 ? http://baike.baidu.com/view/33
  13.htm?fr=ala0_ 1_1
 

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