Pollution in Coal Based DRI Summer Internship Project‚ 2012 Supervised by Susmita Dasgupta susmita.dasgupta@hotmail.com 1 DRI‚ or directly reduced iron is a method of producing solid iron from iron oxide 2 Iron from iron ore can be • In solid form In solid form‚ iron ore can be 1. DRI produced in coal based kilns 2. HBI produced in gas based kiln. 3. DRI does not need coking coal at all. • Or in molten form In molten form iron can be produced in the 1. Blast Furnace‚ needs coking coal. 2.
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Introduction Water pollution is the contamination of water by foreign substances such as chemicals‚ pesticides‚ animal wastes‚ sewage‚ disease‚ and organic matter. There are two primary sources of water pollution‚ point source and non-point source pollution. Point source pollution originates from specific locations‚ and can bet traced to specific pipes or ditches and is generally waste or effluent from industry or sewage treatment. Non-point source pollution originates from a much broader
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Design construction maintenance of water treatment plant How do treatment plants protect our water? Wastewater treatment plants: * Remove solids‚ everything from rags and plastics to sand and smaller particles found in wastewater; * Reduce organic matter and pollutants--naturally occurring helpful bacteria and other microorganisms consume organic matter in wastewater and are then separated from the water; and‚ * Restore
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Throughout most of history‚ the amount of waste generated by humans was insignificant due to low population density and low societal levels of the exploitation of natural resources. Common waste produced during pre-modern times was mainly ashes and human biodegradable waste‚ and these were released back into the ground locally‚ with minimum environmental impact. Tools made out of wood or metal were generally reused or passed down through the generations. However‚ some civilizations do seem to
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AIR QUALITY CONTROL Table of Contents TOPIC | PAGE NUMBER(S) | DEFINITION | | COMMON AIR POLLUTANTS | | MAN-MADE SOURCES | | NATURAL SOURCES | | TECHNICAL BRIEF OF THE GAME | | CONCLUSION | | REFERENCES | | DEFINITION This is also known as atmospheric pollution. It can be classified as ambient (outdoor) air and indoor air. Many materials that are considered contaminants and pollutants are found naturally existing in the atmosphere. A definition
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byproducts result in release of air pollutant. Incomplete combustion releases a toxic compound called carbon monoxide in to atmosphere. Natural process may be dangerous at times but not always. Sources of air pollution: Air pollution sources are broadly classified into two types namely * Anthropogenic sources * Combustion of fuel in motor vehicles * Use of hair spray‚ paints and some solvents * Methane release from landfills where wastes are deposited * Smoke from
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INTRODUCTION Waste disposal Waste management is the handling of discarded materials. Recycling and composting‚ which transform waste into useful products‚ are forms of waste management. The management of waste also includes disposal‚ such as landfilling. Waste can be almost anything‚ including food‚ leaves‚ newspapers‚ bottles‚ construction debris‚ chemicals from a factory‚ candy wrappers‚ disposable diapers‚ old cars‚ or radioactive materials. People have always produced waste‚ but as industry
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that is alsostepped in structure. C. What is Left Behind by Open-Pit Mines? Tailings are a telltale sign of a former mining operation. Tailings are the leftovers of ore that was processed and‚ if fresh‚ it is often found in slurry form in a settling pond or what is called a tailings dam. The water eventually evaporates and‚
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not everything can be recycled. Nevertheless it may reduce the amount of waste but still fall on the band end solution denominator. Governments around the world have become aware that fast solutions to waste management that relies on landfills and incineration (burning of waste) cannot offer a sustainable solution in a world with growing population. Not to mention the negative impacts it may cause to the atmosphere. Nevertheless there are technologies invented which diminishes waste in
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and soot pollution‚ Methane is far more potent. To what extent does Methane effect climate change and what are the uses and limitations of science in addressing this issue? Methane is influenced by various natural and anthropogenic factors such as landfills‚ farms‚ drilling for natural gas‚ and coal mining. All of these factors that generate Methane emissions create ground level o-zone which is not only hazardous for our health‚ but it is a great concern for our climate. EPA is one of several organizations
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