water pollution_pollution演讲

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Literature view about water pollution

As we all know, water is the basic element to ensure survival.Not just for human beings but also for all the lives on earth.With the development of science and society, we gradually know how to use modern technology to serve us so we can create a more comfortable, and also, a better life.But there exist some facts that we can’t deny: when we take measures to transform our world, we do some damage to our nature, including all kinds of pollution which will totally threaten our lives in the future.Unfortunately, water shortage has been a global problem, which means the pollution iue on water has to be taken into consideration now.The brief description of water pollution

1.Definition of water pollution

Water pollution is the contamination of water bodies such as lakes, rivers, oceans, and groundwater caused by human activities, which can be harmful to organisms and plants which live in these water bodies.Because too much pollutant in water including some poison elements has made the water can not resolve these by itself, so the circumstance directly leads to the water quality deterioration which has seriously threaten the survival of human and other animals.2.Claification of water pollution

There are three main types of water pollution: industrial pollution, domestic pollution and agricultural pollution.Industrial pollution is caused by a lot of industrial wastewater which is not being well treated by the factory, especially the factory produces chemical products such as the sulfuric acid plant.The domestic pollution, of course, is caused by household refuse which we produce everyday.And the agricultural pollution is mainly caused by widely use of pesticide and chemical fertilizer, which has done harm to the majority of our drinking water.Each of them are increasing potential risk of exhaustion of water resources.3.Negative impacts of water pollution

Considering that the water ensures basic survival of most species on earth, water scarcity which caused by water pollution can be a global disaster in the future.The first question is that the pollutants in water can do harm to human’s body by causing some incurable disease.Such as cancer, a kind of horrible destruction can totally shorten our lives.Then, most animals and paints will die because of the polluted water, which also break the ecological balance.So, without fresh food to eat, clean water to drink and fresh air to breathe, we will be the last species to face extinction.The current situation of water pollution in china

1.Water environment situation of rivers

There are seven main rivers in China: Changjiang River, Yellow River, Pearl River, Songhua River, Huai River, Hai River and Liao River.State of the environment of China shows the water quality of the seven main rivers was not improved significantly.The research also shows that the main pollutants were Oxygen Consumed, oils and ammonium.Among all those rivers, Changjiang River and Pearl River, which located in the south of China, have a better water quality because of their high dilution capability.But with the development of life’s quality, the pollution matters also aggravate the serious situation of water pollution.2.Water environment situation in urban areas

With the development of economy and rapid proce of urbanization, people’s demands for water are also increasing.The discharge capacity of domestic sewage and industrial swage now becomes a more and more serious problem to confront with.Among all kinds of urban water pollution, the ground water pollution iue is the most conspicuous.With easy acce to factory and residential area, it also can be polluted easily by sewage which contains abundant organic materials, and that directly leads a serious organic contamination to the majority of urban rivers.People’s drinking water security and healthy are threaten by the declining of water quality and the increase of cost to treat pollution.The research to water quality of lake and reservoir points out that the section with water quality belong to Cla II, Cla III, Cla IV and Cla V accounted for 3.6%, 21.4%, 25% and 14.3%.3.Water environment situation in country areas

The economy of country are developing with the cost of deterioration of water quality.On the whole, country water pollution can be claified by three types: pollution caused by agricultural production, pollution caused by rural life and pollution caused by the development of enterprise in rural areas.As we can see, the widely use of chemical fertilizer has added so many poison chemicals to water which is beyond the water’s ability of self-purification.At the same time, the disposal of large amounts of manure by intensive operation without limitation has also made a big problem to the rest of clean water resource.With the “backward” facilities, people can’t find a way which can eliminate contradictions between economy and environment.Conclusion and Recommendations

China is a developing country.And as we all know, in the last few decades, the whole society were experiencing an amazing transition.We now have more advanced technology, more powerful military forces and more steady economy, but we choose to ignore a fact that we are doing damage to our surroundings.The water, which I believe, is one of the basic elements of the foundation that formed our whole human civilization.If we do not take measures to protect the only clean water we can depend on, we will soon face the end of human race.