Pollution of reservoirs
Water pollution is a serious environmental problem. Indeed, water is essential for the existence of all living organisms, including humans. But its contamination makes it impossible to use water for drinking. And the existing methods of water purification are by no means a panacea, because in many cases nothing can help.
The author of the photo is aebaker13, the link to the original (photo has been changed).
The main causes of water pollution
1. Waste water. Simply put, it’s the water that gets in the sewer.
They represent a waste water mixture of waste of human life, dirt, detergents and rainwater. The result is a dirty and toxic liquid, which merges, as a rule, into rivers and seas. And the main problem is that household wastewater contains various chemicals (due to detergents). It is they who inflict major damage on living aquatic organisms.
2. Industrial waste.
They appear in reservoirs for various reasons. It happens that industrial wastes merge deliberately into rivers and seas (this is the easiest way to get rid of them, and the most harmful). And sometimes accidents or leaks occur, as a result of which the waste turns out to be in the water.
Because of the fertilizers used in the fields, great damage to reservoirs is caused. This happens because chemical and organic fertilizers located in the upper soil layer are washed away by rain in the reservoirs (and also fall into underground waters). But the abandonment of farming would be a suicide, since they are food suppliers. Therefore, nothing can be done with this problem.
4. Oil leaks.
Unfortunately, they happen too often. According to some reports, in America alone there are more than 10,000 leaks each year. And, getting into reservoirs, oil products have a lot of adverse effects on living organisms.
5. Solid waste.
There are many reservoirs in the world that serve as some kind of mud. There are resetting various rubbish, which in large numbers is going to surface of reservoirs. Because of what prevents sunlight, which, in turn, leads to a violation of many processes occurring in these ecosystems.
6. Thermal pollution.
Under this item is meant the drainage into warm water reservoirs, which is formed as a result of the operation of thermal and nuclear power plants. In its composition, water does not represent any danger, since it is taken from the same reservoirs, but its elevated temperature has an adverse effect. Due to the increase in water temperature, many processes are accelerated, which leads to various problems. In such reservoirs there are mass extinctions of living creatures and accelerated overgrowth with algae.
7. Atmospheric pollution. In the atmosphere of our planet contains a lot of pollutants. They also have a detrimental effect on the reservoirs.
The greatest harm is delivered by ash, soot, ash and various gases. They appear in the atmosphere, mainly because of the industrial activity of people. And after getting into the water chemical reactions occur, due to which concentrated acids are formed.
Also, products of industrial activity can react with water and in the atmosphere, due to which there are acid rains, which also inflict great harm to reservoirs.
Consequences of water pollution
In the world already there is a shortage of fresh water (mainly in regions close to the equator). Pollution of reservoirs only exacerbates the state of things. All this is threatened with a shortage of fresh water for a large number of people. And, as a consequence, an increase in the number of deaths from thirst.
Water pollution is a serious problem for humankind, but there are many ways to solve it: to learn more about natural resources, to create more advanced water purification mechanisms, to introduce wasteless technologies in industry, to reuse purified sewage (in agriculture, for example), etc. .
Fighting this problem is quite possible and necessary. And given the fact that science is not in place, one can hope that we will see the results of this struggle.