英语演讲稿水污染英文.ppt
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.
8
9
Discharging sewage into water
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Water hyacinth
水葫芦
11
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）
17
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
18
For individual
• Damage Harm to human 's health
• Destruction of Marine fishery resources and aquatic products
waterpollution（水污染、环境保护）有相应PPT
waterpollution（水污染、环境保护）有相应PPTGood 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 waterclean 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 freshwater 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, take your 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 wouldreduce 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!。
《水污染英文版》课件
要点三
Prevention and control
Strengthen the management of toxic chemical emissions and control the use of pesticides and fertilizers.
03 Water pollution prevention and control
fishing, agriculture, and the tourism industry
04
The ecosystem is disrupted, leading to a decline in biodiversity and the degradation of habitats
02 Water pollution types
02
Impact
Thermal pollution can cause an increase in water temperature,
affect the living environment of aquatic organisms, and disrupt
the ecological balance of water bodies.
Prevention and control
Strengthen the management of industrial wastewater discharge, control acid rain discharge, and reduce the discharge of heavy metal ions.
Prevention and control
Strengthen the construction of sewage treatment facilities, improve sewage treatment efficiency, and reduce sewage discharge.
水污染--英语课上演讲ppt文稿
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
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
2
1
Some data 2 water use& pollution
3 what can we do
3
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.
【精品】Water-Pollution水污染英文PPT(1)汇编
Water Pollution
Water Conservation
Water Pollution
Water Conservation
Water Pollution
World Water Day
World Water Day has been observed on 22 March since
transwaterssharewatershareopportunities共享的水共享的机遇2008
Wቤተ መጻሕፍቲ ባይዱter Polltion
Made by：China Win
Water Pollution
introduction
Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater).
individuals who have polluted.
Water Pollution
Stop Pollution
Wastewater treatment: Any discharge of waste water into any water body
must comply with the regulations and standards of the State for radioactive protection.
Water Pollution
introduction
Water pollution is a major global problem which requires ongoing evaluation and revision of water resource policy at all levels (international down to individual aquifers and wells). It has been suggested that it is the leading worldwide cause of deaths and diseases, and that it accounts for the deaths of more than 14,000 people daily.
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For plants
• 1.To reduce water consumption • 2.To buy equipment of sewage treatment • 3.Don‘t discharge sewage into water • 4.To use water recycling system
• one theme per year • 2011: water for cities
• It’s takes a lot of water to keep life going.
1
Some data 2 water use& pollution 3 what can we do
71% of earth’s surface is covered with water
Are the water sources abundant?
For governments
• 1.To establish urban sewage treatment system(城市污水处理系统)
• 2.To restructure Industrial
• 3.To encourage the development of new water sources
Low layer
0.3% of fresh water
less than 3% Of total water
Water Issues in China
water resources per capita
• China water resource rank fourth in the world.
Industrial Water Pollution
All kinds of industry generate trade waste (工业废水）
Iron and steel industry Food industry Complex organic chemicals industry Nuclear industry Pollutants: organics, oil, metal, acid May require special wastewater treatment.
• China isn't rich in water resources .
• Obviously, the prospect of Chinese water resources isn't optimistic.
30000 (m3/yr/ca) 25000
26600
20000
15000 10000
For individuals
• 1 .Don’t use cleaner conclude P
• 2. Don’t throw the garbage into the rivers
• 3. To promote awareness of preserving water resources
• 4. To tell the persons around you to protect the water resources
Uneven distribution o水f 资w源at分e布r r不e均sources
% 100 80 81%
60
40
38%
20
0
南方
水资源
62%
19%
北方
土地资源Βιβλιοθήκη • No北rth方: pwoa人 G水ptDue口 资 Plra:rt源 :4ei4os:4%no7:u2%4r27c%% e:22% Sou南th方: 人口: 53% popGuDPla:tio5n6%53% wa水ter资re源so:u7r8c%e:78%
environment
Water is the source of all things
• It’s the only water, but it’s the liquid wonder that makes our world possible.
• Water is able to dissolve more substances than any other liquid.
Sub-irrigation
Pipes can be used for drainage as well
Agricultural Water Pollution
Excessive fertilizer use may lead to eutrophication（水体富营养化） in many aquatic habitats.
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.
Domestic Water Use
70% used as solvent to carry wastes. 30% used for lawn and garden. Very small fraction used for drinking.
Natural purification processes cannot cope with highly concentrated urban wastes.
Water is considered polluted if a substance or condition is present that renders the water useless for a particular purpose
The sources of water pollution
Must be treated before release.
Domestic water pollution
Waste water from Bathing, dishes, toilets No toxic substance, abundant in nutrients with nitrogen (N，
氮）and phosphorus (P，磷） Eutrophication （水体富营养化）
Trash or garbage (e.g. paper, plastic, or food waste) discarded by people on the ground, along with accidental or intentional dumping of rubbish, that are washed by rainfall into storm drains and eventually discharged into surface waters .
Agricultural Water Use
Four common irrigation methods:
Surface / Flood
Requires extensive canal systems
Spray
Use pumps
Trickle
Strategically places openings
Direct sources
effluent outfalls from factories, refineries( 精 炼厂）, waste treatment plants ...
Indirect sources
contaminants that enter the water supply from soils/groundwater systems and from the atmosphere via rain water...
Agricultural runoff from large, open expanses is major source of water pollution.
Industrial Water Use
Accounts for nearly 50% of all water withdrawal in U.S., and 23% worldwide.
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.
World Water Day
(World Day for Water) • On March 22
• the United Nations General Assembly（联合 国大会） in 1993
• aim: to arouse public’s awareness of economizing water sources, and to protect it