水污染--英语课上演讲ppt文稿
water pollution(水污染、环境保护)有相应PPT
Good afternoon, ladies and gentleman! I am glad to stand here to take my presentation. Today I would like to talk about one important thing in our life—water! As the content shown, my presentation is divided into five sections.First, let’s discuss the signification of water! "No water, no creatures" It's true that the human beings will run the end if there is no water in the world. Man can live for about 7 days without any food, but could you live for more than 3 days without water? I guess your answer is no! C omprising over 70% of the Earth’s surface, water is undoubtedly the most precious natural resource that exists on our planet. Without the seemingly invaluable compound comprised of hydrogen and oxygen, life on Earth would be non-existent: it is essential for everything on our planet to grow and prosper.Although we as humans recognize this fact, we disregard it by polluting our rivers, lakes, and oceans. My dear friends, do you still remember the clear stream near your house when you were a child? When we were children, the stream was so clean that we can even see our image upon the water surface. When we were children, we used to go swimming and capture fishes in the river. When we were children, each family drank from it. But now, a few things changed gradually. The clean stream was disappear and replaced by a dirty river.So why does this matter? Let’s seek the answers from the picture! Ascan be seen from the cartoon, industrial effluent, agricultural chemicals and domestic waste water was discharged directly into the river, which make the water dirty. People who make the water clean through water purification plant drink the water from this river. However, the animals that live in this river are unlucky and miserable. They said angrily. “Hey! Think about us, too!”No doubt, there are many factors that lead to water pollution. Let's take a proper look at three main causes of water pollution.On one hand, the waste from the industries or factories contributes a lot to the problem of water pollution. They use injection wells to insert all the harmful and insolvent materials into the water bodies. Emission of such materials proves to be fatal due to its ill effects on the health of humans and animals.One the other hand, let us take daily life swage into consideration, sewage often contain feces and the waste from household chores. These wastes are controlled through sewage pipes which is treated in water treatment plants. However, if sewage is left unattended, it causes water contamination and gives rise to many waterborne diseases. Many developing countries who do not have access to good living conditions and water face the problem of sewage and water pollution. Even in the developed countries if the sewage is not treated well, it will create many health problems and effect the fresh water by killing the organisms livingin it.Last but not least, the farmers or the landowners that are situated near the fresh water bodies contribute to the pollutants which mix up into the water polluting it. The farmers who produce crops on large scale, need to treat and nurture their crops well to provide good quality of food to the increasing population. Taking care of these crops comes at a great price due to the usage of pesticides and fertilizers. These pesticides get washed away due to rain which eventually flows into the fresh water bodies harming the aquatic life and bringing down the quality of drinking water.What can we do to protect water? First, save water! If you save water, there is lesser contaminated water to treat, and the pressure of the same on the resources becomes minimal. Save water with simple steps like turning it off when washing vessels or brushing your teeth, not using the washing machine when the load is not high, using a mop or cloth to wash the yard instead of a hose pipe and the like.Secondly, watch what you are throwing! Keep a lookout for what you're discarding. Never, ever throw oil, paints, litter and things like that into the sink or the toilet. Somewhere down the line, it mixes with the water sources and adds to the contamination. This also includes not salting the driveways in the winter to get rid of the snow. The salt finds its way into the nearest water body, killing off fish in its wake. Also, takeyour car for regular servicing. The oil leaks and chemicals that it is giving off is going into the nearest water body and causing pollution again.Then, go easy on the chemicals! All those pesticides and fertilizers that you're using in your garden? They are really harmful and poisonous when mixed with water. Basically, not fit for human consumption. How's that connected? These pesticides and chemicals find a way into the water resources and pollute the water further. One way in which you can prevent this factor is to have a lot of plants in your garden. These act as buffers and prevent the chemicals from escaping into water bodies.In addition,reducing pollution in the air could reduce water pollution. Changes to agricultural practices could provide a solution. Improvements to sewage treatment systems would reduce pollution.My dear friends,Water is the source of life, but it is not inexhaustible. If we did not take action now, the last drop of water in the world would be man’s tear!Let's act together, cherish water, save water and protect water! That’s all, thank you!。
Water_Pollution水污染英文PPT幻灯片课件
For government
1To establish the urban sewage treatment system (城市污水处理系统的建立 )
2 To restructur the Industrial（调整产业结构）
3.To develop the new water sources
There are many influence that we can’t describe them by words. So I will
show you some pictures.
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Discharging sewage into water
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Water hyacinth
水葫芦
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4.To strengthen the planning and management of water resources
5.To control the agricultural non-point source pollution （控制农业面源污染）
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For Business
1. To reduce water consumption(减少耗水 量)
2. To buy equipment of sewage treatment (买污水处理设备)
3. Don‘t discharge sewage into water. (不要乱排污水)
4. To estiblish the water recycling system
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For individual
• Damage Harm to human 's health
• Destruction of Marine fishery resources and aquatic products
水污染-英文版课件PPT精选全文完整版
Other food-processing plants discharge fruit and vegetable skins, seeds, leaves, stems, and other vegetable wastes.
Oil spills from tankers at sea or leaks from underground storage tanks on land are very difficult to control
Oil spills at sea decrease the oxygen level in the water and cause grave harm to the creatures living in the sea.
2021/3/10
5
As water moves along or beneath the surface of the Earth, it dissolves minerals and matter from decaying plants and animals.
The principal positive ions (cations) in natural water are sodium (Na+), potassium (K+), calcium (Ca2+), magnesium (Mg2+), and sometimes iron (Fe2+ or Fe3+).
Domestic sewage contains a wide variety of dissolved and suspended impurities: a. organic materials-food and vegetable waste b. plant nutrients- chemical soaps, washing powders c. disease-causing microbes微生物
学习资料英语演讲稿-水污染-英文PPT.ppt
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1
Some data 2 water use& pollution
3 what can we do
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71% of earth’s surface is covered with water
Are the water sources abundant?
11000 8800
5000 2200 1047 3347 0 China North South World USA Russia china China
• with water resources per capita being2200m3 or so, only 1/4 of that of the world.
Agricultural runoff from large, open expanses is major source of water pollution.
精心整理
Industrial Water Use
Accounts for nearly 50% of all water withdrawal in U.S., and 23% worldwide.
90% of water used by industry is for cooling, and is returned to the source. Very little actually consumed. Most processes involve heat exchange.
Water used to dissipate and transport waste. Toxic and overload wastes lead Stream and lake degradation.
水污染-英文演讲ppt
Thank you !
WATER POLLUTION
Yangzhou, China Miles
The four basic natural resources are water, air, land and energy. We need water for multiple uses and a certain quality is required. Its use leads to the generation of wastewater that can cause an impact on the environment.
As far as future prospect is concerned, I am sure that good results will be achieved in this respect. Rivers which used to be contaminated by industrial wastes will be cleaned and fish which could not live there a few years ago will be again. To conclude, it seems obvious that tomorrow will be better and brighter only if everyone does his part and tries hard to seek solutions for its control.
In addition, factories in towns and cities must be prohibited from draining waste liquids into rivers before they are totally treated and purified. I feel if they violate relevant rules or laws, they should be fined heavily. Certainly, there are some other cures which are worth adopting.
水污染有关英语演讲稿高中
水污染有关英语演讲稿高中Water Pollution。
Good morning, everyone. Today, I am here to talk about a very important issue that affects all of us water pollution. Water is essential for life, but unfortunately, it is being polluted at an alarming rate. This is a problem that we cannot afford to ignore any longer.First and foremost, let's discuss the causes of water pollution. There are many sources of water pollution, including industrial waste, agricultural runoff, and untreated sewage. These pollutants can contaminate our water supply and make it unsafe for drinking, swimming, and fishing. In addition, plastic waste and other debris can also pollute our waterways, harming aquatic life and disrupting ecosystems.The consequences of water pollution are severe. Contaminated water can lead to a variety of health problems, including gastrointestinal illness, reproductive problems, and neurological disorders. In addition, polluted water can harm wildlife and destroy habitats, leading to a loss of biodiversity. Furthermore, water pollution can have serious economic impacts, affecting industries such as fishing and tourism.So, what can we do to address this issue? There are several steps that we can take to reduce water pollution. First, we need to improve our waste management practices and reduce the amount of pollutants that are released into our waterways. This can be achieved through better regulation and enforcement of environmental laws. In addition, we can also promote the use of sustainable agricultural practices and invest in wastewater treatment facilities.Furthermore, we can all play a role in preventing water pollution. We can reduce our use of plastic and properly dispose of waste. We can also participate in community clean-up efforts and support organizations that are working to protect our waterways. By taking these actions, we can all contribute to the preservation of clean and healthy water for future generations.In conclusion, water pollution is a serious problem that requires immediate attention. We must work together to address the causes and consequences of water pollution and take action to protect our water resources. By doing so, we can ensure that clean and safe water is available for all. Thank you.。
《水污染英文版》课件
水污染的类型
地表水污染
主要发生在湖泊、河流、沿海 等水体表面。
地下水污染
由于化学品、油污、肥料等渗 入土壤而导致的污染。
海洋污染
海洋污染是指在海水中释放出 的有害物质，包括工业废水、 石油泄漏、塑料废弃物、排放 物和营养物质等。
水污染的影响
环境影响
• 对动植物的影响 • 对生态系统的破坏 • 减少水资源的可用性
健康影响
• 水污染会引起多种疾病 • 长期饮用污染的水会
对身体健康产生不良 • 影易响感人群可能会在接
触污染水体后出现症 状
经济影响
• 设施损失和修复成本 • 饮用水的治疗和替代成本 • 旅游业和渔业的影响
预防与控制
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法律法规
为了控制水污染，各国都有法律法规限制生产和排放不良物质。2Fra bibliotek清理和恢复
针对水污染的不同类型采取不同的清洁和恢复措施。
水污染英文版
在这个PPT课件中，我们将讨论水污染的各个方面，包括它的定义、引起它的 原因、它的来源、类型、影响和预防控制等问题。
介绍
1 定义
水污染是指将有害物质排入水体中，改变水质的物理、化学或生物特性的行为和过程。
2 水污染的原因
导致水污染的原因包括人类的行为，例如排放废水、化学品、农药等；天然因素和环境 变化也会对水质产生影响。
3
可持续管理
可持续使用水资源并不会完全避免污染，但可以减少它的影响。
4
公众教育
公众教育是防治水污染的一项重要举措。
结论
总结
水污染是一个复杂的问题， 需要政府、企业和大众共 同努力来解决。
号召
我们每个人都可以在日常 生活中采取预防措施，来 保护我们的水源。
水污染英文版课件
Water Quality Standards
01
Standard for fecal coliform
03
Standard for heavy metals
The concentration of heavy metals such as lead, cadmium, mercury, etc. should be very low to avoid toxic effects on human health and the environment
Municipal Waste Water Pollutio
01
Municipal waste water pollution is caused by the discharge of sewage and stormwater runoff from residential, commercial, and institutional sources
Sewage discharge
Municipal and industrial wastewater directly discharged into water bodies can cause pollution
Effects of Water Pollution on
Human health
02
Types of Water Pollution
Point Source Pollution源自010203
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The last drop of human, will be tears of remorse after environmental damage
PART1
1.what is the problem we are facing now?
2.Is this water in your hometown clean?
pollution which has long ignored by us.It is high time we
take actions.
知识回顾 Knowledge Review
祝您成功！
problem,water resources are so scarce, water pollution is also very serious.I want to say: when the water of life, the source of life is all dirty water, what can we drink?
In my mind, the water environment of my hometown is not as good as before, may be your hometown also faces the
same situation.
Groundwater accounts for water resources in China118citiesFra bibliotekclean
Light pollution Serious pollution
The proportion of national drinking Groundwater
I was shocked when I saw this data.It turned out that our country is also facing such a serious water
PART2
What makes the water pollution
Hot water from the Power plant
Livestock farm drainage
industrial waste water
Urban domestic water
Agricultural drainage
About 400cities
2011-2012
Groundwater in the residential area of the whole country
polluted
Serious pollution
Rural population facing the threat of groundwater
PART4
Must severely punish the one who pollutes the environment
I believe that everyone could be shocked at the terrifying results brought in front of us by water
Mine drainage
PART3
How water pollution affects our lives
Fluorosis（氟中毒）
Cadmium poisoning（镉中 毒）
Lead poisoning （铅中毒）
Digestive system diseases
Stone
Cardiac and cerebral vascular sclerosis（心脑 血管硬化）