Can anyone answer this...?

Question

Why is pollution a global issue?

10 points for best answer, thanks :)

Answer 1

short and sweet answer would be...........

because it affects everyone in the globe,not just a certain part of the world,but EVERYONE

Answer 2

Blake is trying WAY TOO HARD to get the 10 points. .

Answer 3

Yeah, I agree with all above

Answer 4

Chief Seattle a Native American said over a hundred years ago.

Those who sleep in their wastes will die in it

And it s happening

so the short answer is we will die if we pollutes too much

There are several kinds of pollution for example Water ,Air and Soil

WATER POLLUTION

FIRSTHAND CONTAMINATION

Rivers and Lagoons

millions of batteries are thrown in the rivers and Lagoons by night fishermen

1 small penlight battery contaminate 10.000 liters of water

raw sewage added to water flows like canals and rivers ,

trash dumped on rivers edges ,

Industry contaminates practically unchecked

farmers using agro chemicals (fertilizers ,herbicides & pesticides)then deforest and the rains washing the topsoils impregnated with contaminants into the rivers

thousands of women that do the washing in rivers using harmful detergents.

farmers dump acidic coffee husk into the waters which kills millions of fish ,

on the coasts

oil spills that contaminate coastal waters,

Oceans

industrial wastes that are dumped into deep oceanic trenches

SECONDARY POLLUTION

changes in water temperature enhances harmfull algae,(remember the red tide)

and kills many fish who are critical to temperature ,when sea water enters lagoons here in Mexico many fish die ,due to sudden temperature changes

also warm water releases carbon gases

cold water absorbs them

SOLUTIONS

wetlands like swamps have always been Natures natural filters for natural water flows,aquatic plants clean the water ,the anchored plants as well as the floating ones

we should redesign wetland flora with in natural water systems to help contra contamination.

stop sewage systems that connect to natural water flows ,forbid and police the dumping of rubbish on waters edges ,

the best way is through the educational systems ,starting at kiddy schools and rising in intensity with progression.

but in Mexico this is not accepted because this kind of education is not in the curriculum.

In short the ways to protect the waters is

laws and punishment ,government vigilance ,education ,

alternative farming methods away from using chemicals ,which eventually end up in the ground water supplies

to merely clean pollution or try to clean is never effective because of population growth ,it gets worse by the year ,an impossible task

we must attack at the roots and that is the contaminating mentality

SOIL POLLUTION

MONO CULTURE PLANTING EXHAUSTS AND CONTAMINATE THE SOIL

all plants and trees require certain chemicals and secrete others .

if there are too many of one specie ,the requirements are too much of the same and the soil gets exhausted.

also if there is too much of the same chemical output the soil gets polluted,

and so bio-diverse systems are always the healthiest

So agriculture pollutes the soil apart from that this kind of farming uses pesticides ,herbicides and fertilizers,

because to much of one specie also attracts to much of one specie of predators and disease,and is combated with chemicals and too much of the same chemicals are demanded by the soil

on top of this heavy machinery is used which compacts the soil raising the salt content to the surface ,

the plow opens the top soil and this dries out .leaving it vulnerable to wind and water erosion (the dust is easily blown or washed away) and all micro organisms needed to build the soil are killed

so the destruction of lands is not only pollution

other polluting factors are contaminated rain .and contaminated ground waters because of landfills

and contaminated beaches because of oil spills and sewage outlets,

And in the cities people continue to mix organic wastes with their trash ,this is responsible for 70% of soil contamination

SOLUTIONS

the worst you can do is throw it with the trash

70% of contamination is due to organic waste that is mixed in with the garbage .

and it is just as bad in the sewer where it helps to breed rats and in the landfill it poisons the ground

and it is the easiest to take care of

o first of all we have to classify trash at least keep the organic to one side ,like in a plastic bin with a lid

if you got a few meters of ground ,you only need 1 or 2 square meters in a shallow hole ,in the shade ,that you can wet now and again ,where you dump everything that is organic ,from toilet paper,bones vegetable cuttings ,eggshells,,dead bodies ,excrement ,and cover regularly with leaves to keep humid and to hide any smell

the worms will come and decompose the wastes turning it into beautiful black soil for the garden of flower pots .

if you are in a apartment ,if you have a balcony get a big plastic bin drill some holes in the side and lid ,

and add a few buckets of sand now and again to put over the trash ,you should really stir or move the stuff at times to aerate it and ensure that the decomposition is overall ,keep moist

this rubbish does not get big very fast and the thing works for a long time with out getting full

got a compost heap in the garden for 6 years ,have added tons of banana poles ,and palm leaves at times tree trunks ,the mountain goes up and down and never seems to get any bigger ,the stuff rots and becomes a very fine black compost of high density

We need more vigilance and control and laws for municipalities ,industry and agriculture plus education for farmers,on sustainable farming

and educating the public in not mixing organic wastes with their trash

AIR POLLUTION

the smoke from industrial chimneys,the smoke from any fire

the escaping gases from spray cans ,the fumes from all internal combustion engines in the world ,all contribute to air pollution

.we live in a closed system,pollution that is produced in one place can end up on the other side of the world.

there are air currants moving all around the globe, and 5 miles up in the air is a layer which can hold things as big as frogs ,that have been picked up by super evaporation ,that can come down somewhere else.

On the North pole contamination has been found in the ice ,that could have come from New York,

if people burn plastics or tires the contaminated smoke will go up and join air currants that take it someplace else.

Answer 5

As the world begins to wake up to the dangers and the damage caused by pollution, the pressure to become more environmentally responsible increases for those of us that use the combustion process to produce our energy. The problems caused by pollutants such as nitrogen and sulphur oxides are now worldwide issues. Poor air quality, serious smog conditions in some urban areas, the formation of acid rain, and the subsequent damaged it causes to water supplies & timber are at the forefront of our environmental concerns. Add the perplexing theories regarding Co2 emissions and the "Greenhouse effect". Politicians of all stripes rant & rave and create laws that effect our businesses. We really do need to have a basic understanding of the facts regarding air quality and what we are doing that has an effect on this aspect of the environment we live in now and in the future. The challenge for industry is to minimize these problems and create a safer future through a cleaner environment.

POLLUTANTS - the abc’s

Before identifying methods to reduce and control various types of pollution, it is important to recognize exactly what these pollutants are and how they are formed. Understanding how pollution is created is a first step in developing techniques to combat it.

CO2 = CARBON DIOXIDE

As the best known of the so called "greenhouse" gases, carbon dioxide is under constant scientific scrutiny and is the focus of social and political concern. Produced by the process of combustion, particularly the burning of fossil fuels such as coal, oil and natural gas, CO2 is emitted in gaseous form in the flue gases originating from any combustion device.

C + O2 = CO2 (Burning of carbon based fuels)

CH4 + 2O2 = CO2 + 2H2O (Burning of gas)

Carbon dioxide molecules, unlike other components of pure air have the property of absorbing the infra-red (heat) radiation of the sun. Therefore, the more CO2 in the atmosphere, the more heat the atmosphere can absorb which could contribute to the melting of the polar ice caps and the expansion of the oceans into low lying areas. The objective of an efficient burner is to achieve combustion conditions as near to the Stoichiometric parameter of the fuel as is safely possible. The term stoichiometric literally means "measurement of elements" and is used to denote a condition where the equivalent weights of substances in a chemical reaction have been precisely determined. In layman’s terms, "Perfect Combustion". At near stoichiometric level, the oxygen content of the flue gas is at the lowest percentage and the CO2 is at the highest. However, the more efficient the burner, the lower the amount of excess air used in the combustion process resulting in the least volumetric emission of CO2 in the flue gases. Perfect combustion involves using exact weights of air and fuel, although in practice this is not possible. Even the best burners available will use a certain amount of excess air. The idea is to use combustion equipment that is able to operate at the lowest levels of excess air.

SO2 = SULFUR DIOXIDE

Closely associated with major air pollution disasters, sulfur oxides have long been responsible for considerable environmental damage. However, these pollutants are generally the product of the fuel bound sulfur content and even sophisticated combustion techniques have not had any effect on its formation. Selection of low sulfur content fuel seems to be the answer to this problem. As probably the most significant single air pollutant, SO2 is produced when sulfur or fuels containing sulfur are burned:

S+O2 = SO2

SO3 is created in the atmosphere by the oxidation of SO2 under the influence of sunlight.

2 SO2 + O2 = 2 SO3

Additionally, some SO3 is introduced directly from combustion processes along with SO2.

The moisture in the air reacts rapidly with SO3 to form a sulfuric acid: ACID RAIN

SO3 + H2O = H2SO4.

When such conversions occur the material originally introduced to the atmosphere is called a primary air pollutant. The new materials produced by chemical reaction in the air are called secondary air pollutants.

CO = CARBON MONOXIDE

Usually formed when there is a lack of Oxygen in the combustion process or when a flame is ‘chilled’. This gas can prove fatal if inhaled but is really a greater danger as a combustible gas which is responsible for many of the accidental explosions that occur around combustion equipment.

NOx = NITROGEN OXIDES

NOX is the collective term for nitrogen oxide gases. Thermal NOx is the most prevalent form of NOx pollutant and as the name implies it is formed at those areas of highest temperature during the combustion process. Chemically NOx is expressed as NO (Nitric Oxide) and/or NO2 (Nitrogen Dioxide). NO is formed when Nitrogen oxidizes in an oxygen rare atmosphere, but it is very unstable and will combine further with Oxygen whenever it becomes available to make NO2. Very little NO gets much further than the end of the exhaust stack. Oxides of nitrogen in the atmosphere, when exposed to sunlight, react chemically with other gaseous compounds in the atmosphere such as "volatile organic compounds" (VOCs) through photosynthesis to form a brownish yellow cloud of gases commonly referred to as smog. Add rain and the smog clears, but the chemical compounds then washed out by the H2O can form various harmful acids that over time do great damage.

The formation of NOx is a complex process which takes place in the pre-combustion, combustion and post-flame regions. It involves the reactive combination of nitrogen found within the combustion air and natural or organically bound nitrogen within the fuel itself. Attempts have been made to identify different NOx formation mechanisms such as thermal NOx, prompt NOx and fuel NOx, yet inconclusive finding have left NOx the subject of extensive research and analysis. It is worth noting that NOx can be produced in isolated sections of the flame and it is not unusual for over 80% of the combined NOx to be produced in only 10% of the flame volume. NOx is a thermally produced gas and therefore its reduction is largely dependent on the control of flame temperature. Distribution of the heat release areas of the flame that prevent concentrated heat release and high temperature points within the flame envelope is the key to lowering thermal NOx formation. Refractory surfaces reflect and concentrate heat and is therefore counter productive in lowering thermal NOx formation.

Minimizing NOx levels involves considering a number of factors including:

Furnace capacity (combustion area)

Temperature of furnace wall – Again refractory is counter productive

Furnace dimension ratios, the optimum length to diameter ratio being approximately 3.5 : 1

Pre-heated air

Humidity

Excess air also plays a major part in the creation of NOx. Greater excess air represents greater access to oxygen not taken up in burning the fuel, and it is therefore available to combine with the 80% nitrogen that is available in fresh combustion air. It has been found that NOx levels peak when excess air is at 40% and reduce rapidly as this excess air decreases. Indeed, as the combustion process of gas requires approximately 11 parts air to 1 part natural gas, it is clear that the real key to low NOx lies in the actual design of combustion equipment. A burner design with poor air/fuel distribution only serves to enhance the conditions necessary for NOx formation.

SMOKE

Excess fuel, incomplete combustion and flame impingement will result in the formation of smoke which discharges particles of carbon into the atmosphere and also causes fouling of the boiler surfaces which will impair efficiency. Smoke is almost always evidence of CO formation, as well as unburned carbon particulate matter.

SOLUTIONS

Reducing air pollution emissions depends on a number of factors – the fuel used, the local conditions, the design of the combustion chamber, heat release, and the design of the burner. (how well does it complement the design of the boiler). Weighing up the benefits and drawbacks of each available technique is therefore a necessary exercise in assessing suitable solutions for emission problems.

Although some methods claim to greatly reduce emissions, they may in fact cause a reduction in efficiency and can result in reduced heat outputs. Unrealistic emission regulations can actually increase pollutant emissions as it may require more fuel to produce the same amount of energy for the process at hand. Lowering air pollutant emissions can increase the cost of a process in terms of more expensive equipment to achieve compliant emission levels, and increased fuel cost due to some lowering of fuel efficiency. The trick is to balance the various factors and gain the most efficient combustion possible while complying with state & federal air quality codes.

NOx REDUCTION TECHNIQUES

External flue gas re-circulation

This technique involves recovering a percentage of the exhaust gas and feeding it back through a fan into an annulus. This Oxygen rare & cooler gas then performs much the same function as air staging in that the flue gas is re-introduced to the combustion air and passes through to the hottest part of the flame, the core. The state and composition of this flue gas not only cools the flame but also creates sub-stoichiometric conditions, which in turn reduces the creation of thermal NOx. This method is a popular and proven technique for reducing NOx levels, particularly thermal NOx.

Air and fuel staging

Air staging is another recognized method of reducing NOx and entails separating the air and fuel into areas of sub-stoichiometric and over-stoichiometric conditions. The main objective of this technique is to divide the air into mainly 3 distinct separate patterns: primary, secondary and tertiary, each of which is controllable in its own rig

Answer 6

Because everything you do has a knock on effect around the whole universe.

Theres the butterfly effect theory, might be worth researching that if you need a fuller answer.

Answer 7

i think pollution is a global issue becasue it has far reaching effects that means the whole globe is affected also its a global issue because if lets say england or the usa as an example stoped polluting tomorow it would'nt change anything its something that to stop and to stop enough to stop global warming the world would have to stop hence its everybodys problem

Answer 8

Is this a serious question?

Because pollution effects everyone on the planet....duh!

Answer 9

it's not. pollution only effects 1 country and that's india. no other country is directly effected by pollution. i have sat on may councels and am a trained chemist. this whole 'fabrication of global warming is a crock. i hope i have someway helped you and relieved your mind. if you would like more info on the misrepresentation of global warming, go www.globalissues/goatissues.com

Answer 10

gas diffusion

Answer 11

cos iit effects every 1

why say 10 points 4 the best answer u get 10 points 4 best answer anyway we all know that

Answer 12

Because what 1 person does affects the GLOBE....as in everybody else...

Answer 13

cos if people are worrying about bigger unsolvable issues they can have ten more mins break time

Answer 14

see, global invovles the problem tht the whole world <earth> is facing n POLLUTION is the problem  which affects almost every form of life n we human beings the most developed race the mere cause of it has christened it has GLOBAL  ISSUE bcoz we too cover all part of the globe and no single corner is unaffected by it atleast up to an extent!!!!

Answer 15

Simple (air pollution) "What goes up, must come down" (usually in someone elses backyard)