environmental pollution.pptxhhhhhhhhhhhhhhhhhhhhhh

ENVIRONMENTAL POLLUTION
 Environmental Pollution can be defined as any undesirable change
in physical, chemical, or biological characteristics of any
component of the environment i.e. air, water, soil which can cause
harmful effects on various forms of life or property.
 Pollution: The term pollution can be defined as influence of any
substance causing nuisance, harmful effects, and uneasiness to
the organisms
 Pollutant:- Any substance causing Nuisance or harmful effects or
uneasiness to the organisms, then that particular substance may
be called as the pollutant.

TYPES OF POLLUTION
 WATER POLLUTION
 AIR POLLUTION
 LAND POLLUTION
 NOISE POLLUTION


Water Pollution can be defined as alteration in
physical, chemical, or biological characteristics of
water through natural or human activities and
making it unsuitable for its designated use.
 Fresh Water present on the earth surface is put to
many uses. It is used for drinking, domestic and
municipal
uses, agricultural, irrigation, industries, navigatio
n, recreation. The used water becomes
contaminated and is called waste water.

SOURCES OF WATER POLLUTION
 Most of Water Pollution is man made It may also occur
naturally by addition of soil particles through erosion animal
wastes and leaching of minerals from rocks
 The sources of water pollution can be classified as
 Municipal Waste Water
 Industrial Waste
 Inorganic Pollutants
 Organic Pollutants
 Agricultural Wastes
 Marine Pollution
 Thermal pollution

INDUSTRIAL WASTE
The major source of water pollution is
the waste water discharged from
industries and commercial bodies, these
industries are
chemical, metallurgical, food processing
industries, textile, paper industries. They
discharge several organic and inorganic
pollutants. That prove highly toxic to
living beings.

INORGANIC POLLUTANTS
 They include fine particles of different metals, chlorides,
sulphates, oxides of iron, cadmium, acids and alkalies.

ORGANIC POLLUTANTS
 They Include oils, fats, phenols, organic acids grease and
several other organic compounds

AGRICULTURAL WASTES
 Chemical fertilizers and pesticides have
become essential for present day high
yielding crops.

Consequently ,
potential
source
they have
become a of
water
pollution.
These fertilizers contain major
plants
nutrients
mainly
nitrogen, phosphorous, and potassium.
 Excess fertilizers may reach the ground
water by leaching or may be mixed with
surface water of rivers, lakes and ponds
by runoff and drainage.

MARINE POLLUTION
 Ocean are the final sink of all natural and manmade
pollutants. Rivers discharge their pollutants into the sea.
The sewage and garbage of costal cities are also dumped into
the sea. The other sources include, discharge of oils, grease,
detergents, and radioactive wastes from ships.

THERMAL POLLUTION
 Thermal Pollution of water is caused by the rise in
temperature of water. The main source of thermal pollution
are the thermal and nuclear power plants. The power
generating plants use water as coolants and release hot
water into the original source. Sudden rise in temperature
kills fish and other aquatic animals.

 Air pollution is the introduction of
chemicals, particulate matter, or biological
materials that cause harm or discomfort to humans
or other living organisms, or cause damage to the
natural environment or built environment, into the
atmosphere.
 A substance in the air that can cause harm to
humans and the environment is known as an air
pollutant.

CAUSES OF AIR POLLUTION
 Carbon dioxide-this happens because of
Deforestation and fossil fuel burning.
 Sulfur dioxide –Due to the burning of
sulfur containing compounds of fossil fuels.
 Sulfur oxides- very dangerous to humans at a
high concentration. Sulfur in the atmosphere
is responsible for acid rain.

CONSEQUENCES OF AIR POLLUTION

CO2 is a good transmitter of sunlight, but it also
partially restricts infrared radiation going back
from the earth into space, which produces the so-
called greenhouse effect that prevents a drastic
cooling of the Earth during the night.
 CO2 in atmosphere --> GLOBAL WARMING

 Land pollution is the demolition of Earth's land
surfaces often caused by human activities and
their misuse of land resources. It occurs when
waste is not disposed properly.
 Urbanization and industrialization are major
causes of land pollution.

CAUSES OF LAND POLLUTION
Four Main causes of land pollution:
 Construction
 Agriculture
 Domestic waste
 Industrial Waste

CONSTRUCTION
 Buildings take up resources and land, the trees are
chopped down and used to make buildings.
 Takes away the places for animals and other
organisms to live.

AGRICULTURE
 As there are more and more people inhabiting the
earth, food is in higher demand and so forests are
chopped down and turned into farmland
 In addition, herbicides, pesticides, artificial
fertilizers, animal manure are washed into the
soil and pollute it.

DOMESTIC WASTE
 Tons of domestic waste is dumped every day. Some waste
from homes, offices and industries can be recycled or
burnt in incinerators .
 There is still a lot of garbage, such as refrigerators and
washing machines that are dumped in landfills simply
because they cannot be reused in anyway, nor recycled .

INDUSTRIAL WASTE
 Plastics factories, chemical plants, oil refineries,
nuclear waste disposal activity, large animal
farms, coal-fired power plants, metals
production factories and other heavy industry all
contribute to land pollution.

 Noise pollution is excessive, displeasing
human, animal, or machine-created environmental
noise that disrupts the activity or balance of human
or animal life.
 Sound becomes undesirable when it disturbs the
normal activities such as working, sleeping, and
during conversations.
 World Health Organization stated that “Noise must
be recognized as a major threat to human well-
being”

SOURCES OF NOISE POLLUTION
 Transportation systems are the main source of noise
pollution in urban areas.
 Construction of buildings, highways, and streets cause a
lot of noise, due to the usage of air compressors, bulldozers,
loaders, dump trucks, and pavement breakers.
 Industrial noise also adds to the already unfavorable
state of noise pollution.
 Loud speakers, plumbing, boilers, generators, air
conditioners, fans, and vacuum cleaners add to the existing
noise pollution.

EFFECTS OF NOISE POLLUTION
 According to the USEPA, there are direct links between
noise and health. Also, noise pollution adversely affects
the lives of millions of people.
 Noise pollution can damage physiological
and psychological health.

High blood pressure, stress related illness, sleep
disruption, hearing loss, and productivity loss are the
problems related to noise pollution.
 It can also cause memory loss, severe depression, and panic
attacks.

SOLUTIONS FOR NOISE POLLUTION
 Planting bushes and trees in and around sound
generating sources is an effective solution for noise
pollution.
 Regular servicing and tuning of automobiles can
effectively reduce the noise pollution
 Social awareness programs should be taken up to educate
the public about the causes and effects of noise pollution.
 Workers should be provided with equipments such as ear
plugs and earmuffs for hearing protection.


Similar to automobiles, lubrication of the
machinery and servicing should be done to minimize
noise generation.
 Soundproof doors and windows can be installed to
block unwanted noise from outside.

Regulations should be imposed to restrict the
usage of play loudspeakers in crowded areas and
public places.

Factories and industries should be located far
from the residential areas.

WAYS TO STOP POLLUTION
 We believe that it is the responsible thing to do to
increase recycling.
 It is just like doing laundry and separating blacks
and colors.
 The residents of the country should also try and do
their part and put in at least one day of litter picking
up.

GLOBAL WARMING AND THE
GREENHOUSE EFFECT

DIFFERENCE BETWEEN GLOBAL
WARMING AND THE GREENHOUSE
EFFECT
Global warming refers to a rise in the
temperature of the surface of the earth.
The Greenhouse Effect is a process by which
thermal radiation from a planetary surface is
absorbed by atmospheric greenhouse gases,
and is re-radiated in all directions.

SOME PROOF OF GLOBAL WARMING
PORTAGE GLACIER
ALASKA
THEN….
PORTAGE GLACIER
ALASKA
NOW….

COLORADO RIVER, AS
OF JUNE 2002
COLORADO RIVER, AS
OF DECEMBER
2003

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