Page 174 - Science Class 07
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Waste Management
• Waste Management • Waste
• Classifica on of Wastes • Solid, Liquid and Gaseous Wastes
• Sewage • Harmful Effects of Sewage • Sewage Treatments
Rapid development in the field of science and disposal to reduce their impact. Improper
technology and increasing rate of consump on management of wastes leads to several
have created another major threat for the environment problems as well as health
environment. This is increasing amount of hazards to human beings.
wastes and their disposal. The environment has Some of the basic objec ves of waste manage-
certain limit to swallow wastes. But, the amount ment are:
of wastes generated today is beyond the
v To provide basic needs to all the people of
capacity of the environment to be sustained.
the present genera on and to raise their
The bad impact of waste accumula on has
standard of life.
caused environmental degrada on. Pollu on is
v To protect our environment from any harm
also the resultant of waste accumula on.
so that we can transfer a healthy environ-
Industralisa on, urbinsa on, consumerism,
ment to our coming genera on.
popula on explosion, etc. are the major causes
of accumula on of wastes. If we do not take v To develop cost effec ve and modern
care of our environment today, the days are not technique for the disposal of wastes
far behind when there would be a total properly.
destruc on of our environment. v To convince people not to make any harm
to the environment.
WASTE MANAGEMENT
These objec ves can be a ained only when all
Dealing with wastes properly and efficiently to
the people of the world par cipate in
reduce their impact on the environment is
conserva on and protec on of environment.
called waste management.
Let’s study about different types of wastes,
We cannot stop genera on of wastes at once.
their impact and their proper disposal.
However, we can follow proper ways of waste
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