Waste is any substance which is
discarded after primary use or it
is worthless,defective & of no use
4. Types of wastes
Liquid type Solid type
Solid waste predominantly is any
garbage,refuse or rubbish that
we make in our homes & other
any waste that is non-liquid .
old car tires,old news papers,
broken furniture and even food
Waste can come in non solid
form.Some solid waste can
also be converted to a liquid
waste form for disposal
It includes point source
and non point source discharges
such as storm water and waste
Eg : waste water from
homes,liquids used for
cleaning in industries,
& waste detergents.
5. Liquid & solid waste types can also be grouped in to :
6. Organic type:
Organic waste comes from plants or animals
sources.commonly they include food waste,fruit
& vegetable peels,flower trimmings & even dog
poop can be classified as organic waste.
They are biodegradable.
Some people turn their organic waste in to
compost & use them in their gardens.
It is processing waste in to new useful
products.Waste that can be potentially
recycled termed as recyclable waste.
8. LIST OF WASTES
Waste comes in many different forms
and they are;
10. HOW TO PROTECT OUR EARTH ?
Avoid using plastic products.
Take your own bags for
shopping insteaduse paper
bags,say “NO” to shops
when they providebyou with
one, as plastics cannot be
recycled it just adds on to the
carbon content in the
Stop littering the streets.
We of course do not litter our
own rooms, the streets are
also ours,so why dirty them?
Its not atough thing to do to
throw wastes in dustbins,the
cleaner the city is more proud
we are of it
Join an environmentally
There are many organisations
which promote& arrange eco-
friendly activities, be a part of
them make people aware of our
earth.or make your own clubs&
associations to do the same,its
11. books for recycling.
Up bottled water
Local bottled waters we made of plastics which are non biodegradable,
as in it increases waste,insted bring bottles from home, fill it & have
Seperate the waste bins into biodegradable & non-biodegradable
Insted of having one bin for all our trashes,use two so to seperate the
wastes in to eco-friendly and non eco friendly ones making it easier
for waste management.
Hang a poster at home ,school,college and offices
Hang simple eco-friently posters at your work places, institutions and
home remaining people of their day to day deeds.
Write a letter to your local administrative head.
Make a point today of writting a letter to your administrative body
about the waste related problems in your society.
12. Waste management
Waste management refers
to the activities connected
with the collection and
disposal of wastes.
Waste management comprises
the following activities:
1. waste collection
2. Waste transportation
3. Waste segregation
4. Waste recycling
5. Waste disposal
6. Waste minimization &control
14. ENVIRONMENTAL EFFECTS DUE TO WASTES
Surface water contamination:
Waste that end up in water
bodies negatively change the
chemical composition of the
water.technically this is called
Hazardous chemicals that
get in to the soil can harm
plants when they take up the
contamination through their
roots.if humans eat plants &
animals that have been in
contact with such polluted
soils,there can be negative
impact on their health.
can result in land & air
pollution and can
problems and other
adverse health effects
in our body.
16. Incineration method of
This simply means burning
waste. This method is common
in countries with limited landfill
can be small for domestic
use,but there are large ones for
municipal use as well.it is great
for treating waste with
contamination & hazardous
waste from factories etc..but the
method produces too much
Sanitary landfills as waste disposal
Generally, this term means a large piece
of land away from living places where all
the waste from a town is deposited.but
there is more to land fills.proper landfill
management involves sorting out all the
waste( waste separation),& senting only
the waste that cannot be recycled &
composted to the site.
Five common ways of managing waste
The waste is compacted or
compressed.It aso breaks up
large items of waste.
Pyrolysis is defined as thermal
degradation of waste in the
absence of air to produce
char,pyrolysis oil,& syngas.
with the right conditions(air
&moisture),organic waste such as food
& plant materials can be decomposed
by bacteria, fungi,worms etc