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                                                                                             Water pollution: causes and consequences I. Pollution of water II. The causes III. Consequences IV. The sources

   -Pollution of the water  I often repeat that the rivers that we see in the world look like veins and that's true since water is also flowing in our veins.  The blue planet is covered with 70% water, 97% of which is salt water and only 3% of fresh water.  For several years, the rates of polluted water and soil pollution have grown monstrously. Many factors contribute to their deterioration and the main causes remain human activity. Water pollution occurs accidentally, unexpectedly or thoughtfully. It is important to remember the consequences of water and soil pollution  Water pollution: it is the contamination of water by waste, chemicals or micro-organisms.

 - Causes of water pollution  Pollution of water is due to:  agriculture (because of pesticides and fertilizers See example in Brittany)  household waste (drugs and biocides released via wastewater and that sewage treatment plants do not know how to treat)  oil spills  ship's oil spills.  In many places, the wastewater is not treated before being rejected because it is very expensive (everything plays on the price).  We may think that we are a fervent supporter of environmental protection. But, unintentionally, we add, massively and / or daily, our impact in the list of the main causes of polluted water.

 4-Water pollution is a degradation, thus causing a disruption of the aquatic ecosystem. We are talking here about surface water and groundwater. surface waters  There are different sources of pollution. Chemical pollution, for example, is one of the origins of polluted water, are often targeted, sewage treatment plants, and the lack of sanitation networks. Similarly for the cleaning of soil, pavement or the evacuation of effluents by industries directly in the rivers (eg pollution of the Seine). There is also contamination of water by viruses and pathogenic bacteria. Here, it is often the degradation of organic waste from animal excrement and man who is the source. sewage treatment plants pollution of the Seine water contamination  Domestic pollution also has a significant impact. The use then the rejection of fats, washing powders, etc. We can also talk about pollution by negligence; throwing plastics, scraps of paper, batteries ... without realizing it has an impact on our entire environment.  Agricultural pollution is not to be forgotten because the concentration of the farms results in a source of bacteriological pollution of the water. Chemical fertilizers affect the quality of groundwater, not to mention herbicides, insecticides and other plant protection products.  And finally, there is accidental pollution, with multiple origins, such as: the discharge of pollutants during traffic accidents, the spread of gas by the factories, the poor storage of soluble chemicals, fires, ... polluting elements

5 Consequences of water pollution  As a result, a large amount of wastewater and waste is discharged to the sea.  This can cause:  Very fast breeding algae that cover the sea surface  increase risks of clogging the gills of fish.  In addition, with global warming the temperature of the water increases and some marine animals are found in seas (or oceans) in which they should not be. (there is more shark in the Mediterranean than at other times); and the disappearance of coral reefs.  Since the beginning of the industrial era, the acidity of the sea has increased by 26%, resulting in the disappearance of organisms and their predators; a terrible impact for people who live on the exploitation of marine resources (disappearance of oysters and mussels if the rate of CO2 continues to rise ...).  Pollution of the groundwater so different streams.

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إذا أعجبك محتوى مدونتنا نتمنى البقاء على تواصل دائم ، فقط قم بإدخال بريدك الإلكتروني للإشتراك في بريد المدونة السريع ليصلك جديد المدونة أولاً بأول ، كما يمكنك إرسال رساله بالضغط على الزر المجاور ...

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مواضيع بالعربية و الانجليزية topics

2016