plzz write a 800 words essay on pollution
Answers
Answered by
6
Pollution is the introduction of pollutants (whether chemical substances, or energy such as noise, heat, or light) into the environment to such a point that its effects become harmful to human health, other living organisms, or the environment. Pollution control is a term used in environmental management. It means the control of emissions and effluents into air, water or soil.
Without pollution controls the undesirable waste products from human consumption, industrial production, agricultural activities, mining, transportation and other sources will accumulate or disperse and degrade the natural environment. In the hierarchy of controls, pollution prevention and waste minimization are more desirable than pollution control.
Pollution control devices
1. Dust collection systems
2. Scrubbers
3. Sewage treatment and Wastewater treatment
4. Vapor recovery systems
The major forms of pollution are Air pollution, the release of chemicals and particulates into the atmosphere. Water pollution via surface runoff, leaching to groundwater, liquid spills, wastewater discharges, eutrophication and littering. Soil contamination occurs when chemicals are released by spill or underground storage tank leakage. Radioactive contamination, added the wake of 20th century discoveries in atomic physics. Noise pollution, which encompasses roadway noise, aircraft noise, industrial noise as well as high-intensity sonar. Visual pollution, which can refer to the presence of overhead power lines, motorway billboards, scarred landforms (as from strip mining), open storage of trash or municipal solid waste.
Thermal pollution is a temperature change in natural water bodies caused by human influence, such as use of water as coolant in a power plant. Motor vehicle emissions are one of the leading causes of air pollution. Some of the more common soil contaminants are chlorinated hydrocarbons (CFH), heavy metals (such as chromium, cadmium-found in rechargeable batteries, and lead-found in lead paint, aviation fuel and still in some countries, gasoline), MTBE, zinc, arsenic and benzene. Pollution can also be the consequence of a natural disaster.
For example, hurricanes often involve water contamination from sewage, and petrochemical spills from ruptured boats or automobiles. Larger scale and environmental damage is not uncommon when coastal oil rigs or refineries are involved. Some sources of pollution, such as nuclear power plants or oil tankers, can produce widespread and potentially hazardous releases when accidents occur. In the case of noise pollution the dominant source class is the motor vehicle- producing about ninety percent of all unwanted noise worldwide. Humankind has some effect upon the natural environment since the Paleolithic era during which the ability to generate fire was acquired.
In the Iron Age, use of tooling led to the practice of metal grinding on small scale and resulted in minor accumulations discarded material probably easily dispersed without too much impact. Human wastes would have polluted rivers or water sources to some degree. However, these effects could be expected predominantly to be dwarfed by the natural world. But gradually increasing populations and the proliferation of basic industrial processes saw the emergence of a civilization that began to have a much greater collective impact on its surroundings.
It was to be expected that the beginnings of environmental awareness would occur in the more developed cultures, particularly in the densest urban centers. The first medium warranting official policy measures in the emerging western world would be the most basic: the air we breathe. The earliest precursor of pollution generated by life forms would have been a natural function of their existence. The attendant consequences on viability and population levels fell within the sphere of natural selection.
These would have included the demise of a population locally or ultimately, species extinction. Processes that were
Without pollution controls the undesirable waste products from human consumption, industrial production, agricultural activities, mining, transportation and other sources will accumulate or disperse and degrade the natural environment. In the hierarchy of controls, pollution prevention and waste minimization are more desirable than pollution control.
Pollution control devices
1. Dust collection systems
2. Scrubbers
3. Sewage treatment and Wastewater treatment
4. Vapor recovery systems
The major forms of pollution are Air pollution, the release of chemicals and particulates into the atmosphere. Water pollution via surface runoff, leaching to groundwater, liquid spills, wastewater discharges, eutrophication and littering. Soil contamination occurs when chemicals are released by spill or underground storage tank leakage. Radioactive contamination, added the wake of 20th century discoveries in atomic physics. Noise pollution, which encompasses roadway noise, aircraft noise, industrial noise as well as high-intensity sonar. Visual pollution, which can refer to the presence of overhead power lines, motorway billboards, scarred landforms (as from strip mining), open storage of trash or municipal solid waste.
Thermal pollution is a temperature change in natural water bodies caused by human influence, such as use of water as coolant in a power plant. Motor vehicle emissions are one of the leading causes of air pollution. Some of the more common soil contaminants are chlorinated hydrocarbons (CFH), heavy metals (such as chromium, cadmium-found in rechargeable batteries, and lead-found in lead paint, aviation fuel and still in some countries, gasoline), MTBE, zinc, arsenic and benzene. Pollution can also be the consequence of a natural disaster.
For example, hurricanes often involve water contamination from sewage, and petrochemical spills from ruptured boats or automobiles. Larger scale and environmental damage is not uncommon when coastal oil rigs or refineries are involved. Some sources of pollution, such as nuclear power plants or oil tankers, can produce widespread and potentially hazardous releases when accidents occur. In the case of noise pollution the dominant source class is the motor vehicle- producing about ninety percent of all unwanted noise worldwide. Humankind has some effect upon the natural environment since the Paleolithic era during which the ability to generate fire was acquired.
In the Iron Age, use of tooling led to the practice of metal grinding on small scale and resulted in minor accumulations discarded material probably easily dispersed without too much impact. Human wastes would have polluted rivers or water sources to some degree. However, these effects could be expected predominantly to be dwarfed by the natural world. But gradually increasing populations and the proliferation of basic industrial processes saw the emergence of a civilization that began to have a much greater collective impact on its surroundings.
It was to be expected that the beginnings of environmental awareness would occur in the more developed cultures, particularly in the densest urban centers. The first medium warranting official policy measures in the emerging western world would be the most basic: the air we breathe. The earliest precursor of pollution generated by life forms would have been a natural function of their existence. The attendant consequences on viability and population levels fell within the sphere of natural selection.
These would have included the demise of a population locally or ultimately, species extinction. Processes that were
RC17:
Welcme
Answered by
2
Industry is one of the greatest source of pollution, accounting for more than half the volume of all water pollution and for the most deadly pollutants. Some manufacturing facilities use huge quantities of freshwater to carry away wastes of many kinds. The waste-bearing water, or effluent, is discharged into streams, lakes, or oceans, which in turn disperse the polluting substances. The pollutants include grit, asbestos, phosphates and nitrates, mercury, lead, caustic soda and other sodium compounds, sulphur and sulphuric acid, oils, and petrochemicals.
In addition, numerous manufacturing plants pour out undiluted corrosives, poisons, and other noxious by-products. The construction industry discharges slurries of gypsum, cement, abrasives, metals, and poisonous solvents. Another pervasive group of contaminants entering food chains isthe Polychlorinated Biphenyl (PCB) compounds, components of lubricants, plastic wrappers, and adhesives. In yet another instance of pollution, hot water discharged by factories and power plants causes so-called thermal pollution by increasing water temperatures. Such increases change the level of oxygen dissolved in a body of water, thereby disrupting the water’s ecological balance, killing off some plant and animal species while encouraging the overgrowth of others.
Towns and municipalities are also major sources of water pollution. In many public water systems, pollution exceeds safe levels. One reason for this is that much groundwater has been contaminated by wastes pumped underground for disposal or by seepage from surface water. When contamination reaches underground water tables, it is difficult to correct and spreads over wide areas. In addition, many U.S. communities discharge untreated or only partially treated sewage into the waterways, threatening the health of their own and neighboring populations.
...
..
.
hope u like it
mark me as brainlieast..
In addition, numerous manufacturing plants pour out undiluted corrosives, poisons, and other noxious by-products. The construction industry discharges slurries of gypsum, cement, abrasives, metals, and poisonous solvents. Another pervasive group of contaminants entering food chains isthe Polychlorinated Biphenyl (PCB) compounds, components of lubricants, plastic wrappers, and adhesives. In yet another instance of pollution, hot water discharged by factories and power plants causes so-called thermal pollution by increasing water temperatures. Such increases change the level of oxygen dissolved in a body of water, thereby disrupting the water’s ecological balance, killing off some plant and animal species while encouraging the overgrowth of others.
Towns and municipalities are also major sources of water pollution. In many public water systems, pollution exceeds safe levels. One reason for this is that much groundwater has been contaminated by wastes pumped underground for disposal or by seepage from surface water. When contamination reaches underground water tables, it is difficult to correct and spreads over wide areas. In addition, many U.S. communities discharge untreated or only partially treated sewage into the waterways, threatening the health of their own and neighboring populations.
...
..
.
hope u like it
mark me as brainlieast..
Similar questions