1. Government College Of Engineering,
Aurangabad.
Soil pollution
Invented By:-
Nikhil Pakwanne
)

2. Soil pollution

3. Introduction of soil
 Soil can be define
as the uppermost
crust of earth
mixed with
organic material
and in which
animals and
microorganisms
live, and plants
grow.

4. Soil pollution
• Soil pollution is defined or can be described
as the contamination of soil of a particular
region.
• Soil pollution is caused by addition of
chemicals, which reduces it’s productive
capacity.
• In rural areas more fertilizers & pesticides
are used in agricultural operations & the
residual chemicals remain in the top layers
of soil.

5. SOURCES OF SOIL POLLUTION
• Acid rains
• Excess application of pesticides, fertilizer.
• Urban solid wastes.
• Disposal of Industrial wastes and sludge
over land.

6. Acid Rain
 Acid Rain is
caused by air
pollution. The
acidic water falls
on the soil and
pollutes it by
making the soil
acidic.

7. Fertilizers
 The use of excess
fertilizers to
increase the crop
yields makes the
soil either acidic or
alkaline and
pollutes it.
 Ex: ammonium
sulphate , sodium
nitrate

8. Fertilizers
 Excess use of
Na, Mg, Ca, K, Zn in
the form of
fertilizers &
pesticides inhibit
plant growth &
reduce crop yield.

9. Urban wastes
 These wastes include a
wet and fermentable
fraction, made of food
residuals from houses,
restaurants and food
industries, paper.

10. Industrial waste
 This pollution can
be very massive in
certain
areas, where the
industries
discharge their
wastes and really
great is the variety
of pollutants: heavy
metals
compounds, asbest
os, organic
compounds

11. POLLUTANTS
 Organic waste
 Compounds
 Excess use of fertilizers

12. Pollutants
Organic waste
Organic waste enter the soil pores &
decompose pathological bacteria spread
infection.
Compounds
Compounds containing
arsenic, mercury, chromium, nickel, lead, Zin
c, & iron are toxic to the life.
Fluorides also affect the plant
development.

13. p0llutants
Excess use of fertilizers
Excess use of Na, Mg, Ca, K, Zn, in the
form of fertilizers & pesticides inhabit
plant growth & reduce crop yield.

14. effect
 Humans
 Animals
 Agricultural
 Urban

15. Humans Effects
 Causes cancers including leukemia.
 Mercury can increase the risk of
kidney damage.
 Also cause headaches, eye irritation &
skin rash.

16. Animals Effects
 Small life forms may consume
harmful chemicals which may then
be passed up the food chain to
large animals.

17. Agricultural Effects
 Decrease soil fertility.
 Reduced crop yield.
 Larger loss of soil & nutrients.
 Reduced nitrogen fixation.

18. Urban Effects
 Public health problems.
 Pollution of drinking water
sources.
 Foul smell & release of gases.
 Waste management problems.

19. Control of soil pollution
 Ban on use of plastic bags which are
major cause of pollution in cities.
 Recycling of plastic wastes to
manufacture many ‘remake’ items.
 Ban on deforestation.
 Encouraging forest replantation
programmes.
 Use carefully the fertilizers & pesticides
preferable in optimal dose.

20.  http://en.wikipedia.org
 WWW.GOOGLE.CO.IN