Water Pollution

INTRODUCTION

It consists of more than 70% of the earth surface, the water is without doubt the most valuable natural resources that we are on. Without the invaluable seem complex, which consists of hydrogen and oxygen, life on earth would not exist: very important for us to grow and prosper. Although we as humans understand that this is the case, we ignore the polluting our rivers, lakes and oceans. After that we slowly but surely hurt us to the point where the organism
who died in a very alarming level. Moreover, organisms that are not guilty, our drinking water has become seriously ill, because our ability to use the water for the purpose of recreation. In order to combat water pollution, we must understand the problem and become part of the solution.


And point source NONPOINT

According to the American College Dictionary, pollution is defined as: creating a false or unclean, dirty. Water pollution that occurs when the body of water is harmed as a result of the addition of large quantities of raw materials for the water. When it is not feasible for the purpose of their use, the water is polluted. Two types of pollutants in the water; point sources and nonpoint sources. Point source pollution occurs when pollutants are emitted directly into water bodies. The Exxon Valdez oil spill best illustrates a point source of pollution. A source of nonpoint impact indirectly through changes in the environment. Examples of this type of pollution is the fertilizer, where the water transported from field to the signal from the rain, in the form of run-off
which in turn affect the water of life. Technology exists to diffuse sources of pollution will be controlled and regulated, although political factors complicate the matter in May. Nonpoint source is much harder to control. As a result of nonpoint pollution
sources account for the majority of the river and continue on the lake.


The causes of pollution


Many causes of pollution, including sewage and fertilizers contain nutrients such as nitrates and phosphates. Exceed the level, more nutrients stimulate the growth of algae and aquatic plants. This excessive growth of organisms, and thus our clogs waterways, the use of the dissolved oxygen as a result of decay, and block more light on the water.
This in turn very harmful organisms in the water, because it will affect the respiratory and other fish and invertebrate animals in the water.
Pollution is also caused when the suspended mud and other substances, such as land, wash plowed fields, construction and logging sites, urban, and eroded banks of the river in case of rain. In natural conditions, lakes, rivers and other waters Eutrophication, a slower aging process the body to fill with water and organic sludge. Currently, various sediments enter the water, fish respirationbecomes reduced, plant productivity and water depth to be reduced, and aquatic organisms and their environment to be stifled. Pollution in the form of organic
material entering the water in different forms, such as sewage, such as leaves and grass clippings, leaves or animal feed lots and pastures. When natural protozoan in the water and bacteria break down organic materials, as they begin dissolved oxygen in the water. Many types of fish and elementary-dwelling animals can not survive if the level of dissolved oxygen below two to five parts per million. When this happens, kills aquatic organisms in the large number of failures in the food chain.
Polluted rivers in Britain
Pollution of rivers and streams with chemicals continue to have one of the most crutial environmental problems in the 20th century. Shipping chemical pollution entering rivers and tramendous ensure that the amount of damage.



Other pathogens is to prove that the pollution is very dangerous. They can cause many diseases ranging from typhoid and dysentery small to respiratory and skin diseases. Including pathogenic organisms such as bacteria, viruses and protozoan. These pollutants channel by untreated sewage water, sewage, septic tanks, drain from farms, and ships that dump sewage in particular. Although small, this makes a big impact shown by their ability to cause disease.

Additional forms of water pollution

The last three forms of water pollution in the form of oil, radioactive substances and heat. Petroleum pollutes waters often in the form of oil, as a result of oil spills. The previously mentioned Exxon Valdez is an example of this type of pollution. This large-scale deliberate disposal of the oil is a major cause of pollution along the coastline. In addition to super tankers, off-shore activities, which contribute most of the pollution. One estimate is that one tonne of oil per million tonnes of oil transported. That is about 0.0001 percent. Radioactive material in the form of waste from nuclear power plants, and from the industrial, medical, scientific and use of radioactive materials. Is a specific form of waste uranium and thorium mining and repair. Last pollution of the water this summer. Substance because it is summer temperature increase caused the death of many organisms in the water. A drop in temperature caused when a discharge of the cooling water from factories and power plants there.
Demonstrators protest Drilling
Oil pollution is a growing problem, especially the introduction to the coastal wildlife. Oil in a small number of fast spread over long distances to form oil slicks off. In this picture, demonstrators with "oil-contaminated plastic animals protest of the potential drilling project in Key Largo, Florida. Whether coincidence or leakage occurred during the project, the impact on the marine ecosystem of the thin coral reef can be detrimental.

Oil spill clean-up
Workers use special nets to clean up a California beach after an oil tanker spills. Tanker spills are the environmental problems, because once the oil was spilled, it's almost impossible to remove or control. Even a small amount of fast spread over large areas with water. Because oil and water do not mix, oil on the water problem and then Was in the broad expansive beach. Attempts to treat chemical or sunken oil may disrupt the marine and coastal ecosystems.


Classifying water pollution


The main source of water pollution can be classified in the cities, industry and agriculture. Municipal water pollution consists of waste water from homes and commercial buildings. For many years, the main city of treats
This is a waste to the content of suspended particles, oxygen-binding substances, dissolved inorganic complex and dangerous bacteria. In recent years, but has more emphasis on improving the facilities of the disposal of solid residues from the treatment process in the city. Basis in the treatment of water in the city in three stages: primary care, including the removal of grit, screening, grinding, and sedimentation; secondary treatment, which requires that the oxidation of dissolved organic way of using biologically active mud, which is then filtered and tertiary care, Advanced in the method of chemical and biological removal of nitrogen and physical methods such as granular filtering and absorption of active carbon to work. The treatment and disposal of solid residues can
responsible for 25 to 50 percent of the capital and operational costs of the refinery. The characteristics of industrial wastewater can be very different, both within and between sectors. The impact of the industry not only discard depending on their
collective characteristics, such as biochemical oxygen demand and total suspended particles, but also about the specific content of inorganic and organic materials. Three options are available to the waste industry. Control may take place on the corner of the production facilities, waste can be treated for liberation of the city to care, or waste can be treated solely on the plant and reused, either directly or exhausted to receive water.
Wastewater Treatment
Untreated sewage, including waste from sinks, toilets, and in industrial processes. The treatment of waste water is needed before it can be safely buried, used or released back into the local water system. The treatment plant, wastewater is passed through a series of screen berjimat and chemical processes for the bulk and bane. General three main phases of treatment, secondary and tertiary. During the first treatment, a large percentage of particulate matter and inorganic materials are removed from the dirt. The second is the focus of treatment for the reduction of organic material by the natural biological process. Tertiary treatment is required when the water will be used again; 99 percent of that solids removed and various chemical processes used to ensure that water is free of dirt as possible.



Agriculture, including commercial livestock and poultry, is the source of many organic and inorganic pollutants in surface water and soil. Continue to depositional soil erosion and stretching from
Nitrogen and phosphorus derived from animals, part of the waste and commercial fertilizer. Animal waste is high in demand of oxygen, nitrogen and phosphorus, and they often harbor pathogenic organisms. Solid waste from commercial
feeders there and removed from the ground, and the main threat to their natural water, is of the drain and leaching. Control may be settling basins for liquids, biological treatment is limited in aerobic or anaerobic lagoon, and various other methods.


Groundwater Problem

Ninety-five percent of all fresh water on earth is groundwater. Soil water found in the natural rock formations. These formations called aquifers, are an important natural resource that many applications. At the national level, 53% of the population depends on groundwater as a source of drinking water. In rural areas this figure is even higher. Eighty-one percent of the water depends on ground water. Although the 1992 Section 305 (b) State Water Quality Report shows that the United Nations in the country of water is a good to very good quality, many areas have a significant groundwater.
Some examples of leaking underground storage tanks and the city to record.


Legislation

Some forms of legislation, which was published in several decades to try to water pollution. In the 1970 Act, the Clean Water Act, which led to 50 billion dollars to cities and states to build wastewater facilities. This helps the surface water pollution from industrial sources and cities in the United States. At the congress of the Clean Water Act in 1972, states were given primary authority to set their own standards to get water. In addition to this standard, the law requires that all countries and their use in accordance with the criteria should be fishable and swim Forums purpose of the act. This means that the country should be able to use the useful life support water and recreational use. Because it is impossible to test the water for each type of pathogenic organisms, which usually see indicators to identify the bacteria. One example is the bacteria known as fecal coliforms. (Figure 1 shows that the quality of water for each every state in the United States, click on the link USA). This indicator bacteria suggests that the choice of a particular water can be polluted by untreated sewage and other, more dangerous organisms that already exist. Provisions of laws and regulations is an important part in the fight against water pollution. They are useful in preventing Envioronmental disaster. The graph shows the reported pollution incidents since 1989-1994. If legislation is stronger, it is possible that this event will not occur.


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Global water pollution

Estimates show that almost 1.5 billion people lack safe drinking water and a minimum of 5 million deaths per year can be associated with waterborne diseases. With more than 70 percent of the planet covered by oceans, which has long acted as the water can be very limited land for the dumping of waste. Raw sewage, garbage, oil and start flooding the dilution of the power of the ocean and the coastline is now the most polluted. Beaches in the world will be closed regularly, often because of the high number of bacteria from sewage disposal, water and wildlife are beginning to the end of the period.
Perhaps the biggest reason for the development of affairs in the world to monitor and reduce global pollution, is the fact that most forms of pollution does not respect international borders. The first major international conference on the environment held
in Stockholm, Sweden, in 1972 and sponsored by the United Nations (UN). This meeting, including the United States to play a leading role, is controversial because many developing countries fear that a focus on the protection of the environment is a plea for countries to the undeveloped world in the economic position of the party. The main results of the conference is the establishment of the United Nations Environment Program (UNEP).

UNEP is designed for the environmental conscience of the United Nations, and in an attempt to allay the fears of developing countries, the first UN body that will be based in developing countries, with offices in Nairobi, Kenya. In addition to trying to reach a scientific consensus on the major environmental problems, the main focus is the UNEP study ways to promote sustainable development to improve the standard of living without harm to the environment. At the time of the creation of UNEP in 1972, only 11 countries in the world to have environmental institutions. Ten years later, the number grew to 106, which in 70 developing countries.














WATER QUALITY

Water quality is closely linked with the use of water and economic development for the country. In industrialized countries, bacterial contamination of surface water caused serious health problems in major cities throughout the mid-1800. At the end of the century, cities in Europe and North America started to build a network of sewer route for household waste downstream water intakes. The development of this network sewerage and waste treatment facilities in urban areas has expanded tremendously in the last two decades. However, the rapid growth of population in urban areas (especially in Latin America and Asia) than the possibility for the government to extend water and sewer infrastructure. While waterborne diseases have been eliminated in the developed world, outbreaks of cholera and other diseases that often occurred with similar frequency in developing countries. Since the Second World War and the birth of the chemical age, quality of water has impacted heavily on the world chemical industry and agriculture. Eutrophication of surface water from human waste and agricultural and nitrification of soil from agriculture has affected large parts of the world. Acidification of the water by air pollution is a new phenomenon threatens the life and the water in many regions in the world. In developed countries, this type of contamination has occurred after the other, with the result that most developed countries have successfully dealt with the major surface water pollution. Conversely, however, industrial countries, such as the new China, India, Indonesia, Brazil and Mexico also now facing all these problems simultaneously.


CONCLUSION

It goes without saying that the problems related to water pollution, the possibility of a disruption of life in most of our planet. Congress has passed laws to try to combat water pollution, so the fact that the water is, indeed, the serious issue. But the government alone can not solve all problems. This is beneficial to us, for information, responsible and involved when it comes to the problems we face with water. We need to become familiar with our local water resources to learn about the disposal of hazardous household waste, so they ended up not in the wastewater plants dealing with certain categories of records or they are not designed to receive hazardous materials. In the yard, we must determine whether there are extra nutrients needed before the fertilizer applied, and the search for alternatives where fertilizers can escape to the surface of the water. We must preserve the existing trees and plant trees and shrubs to help prevent soil erosion and increase infiltration of water into the soil. Around our house, we must remain childless, pet waste, leaves and grass clippings from the gutters and drains. It is
only a few of the many ways in which we, as humans, have the ability to control water pollution. As we in the 21st century, awareness and training will certainly remain the two main ways to prevent water pollution. If measures are not taken and water pollution continues, life on earth will really suffer.
Not the global environment can not be avoided. But the developed world must work with developing countries to ensure that the industry is not adding new economy in the world, the environmental problems. Politicians must think of sustainable development of economic expansion. Conservation strategies have become widely accepted, and people need to learn that energy can be drastically reduced without the comfort of a volunteer. In short, with the technology currently
exists, the global environment years of persecution may be reversed.