Page 177 - Science Class 06
P. 177
COMMON METHODS OF WASTE DISPOSAL REDUCTION OF WASTES
Dumping and compos ng are the two There are many ways for the disposal of
commonly used methods for the disposal of wastes. But, the large quan ty of wastes
wastes. generated everyday has become a ma er of
Dumping : It is the most common method great concern. It has become very difficult
to dispose these wastes properly. Therefore,
of waste disposal. In this method, solid
we should also try to reduce the quan ty of
wastes are spread in thin, compact layers
and covered by a layer of clean earth. The wastes.
layer of earth on the wastes does not allow It can become by the following ways:
insects or flies to breed on the wastes.
v Reuse v Recycling
Besides, this method also helps in proper
Reuse
decomposi on of solid wastes.
This is one of the best ways to reduce the
Compos ng : Compos ng is a natural quan ty of wastes. In this method, we
process in which biodegradable wastes are separate the waste materials which can be
decomposed by microbes and converted
used in one way or the other.
into manure. Some communi es use this
method of transform piles of leaves, grass, Examples:
food wastes and other biodegradable v We can use bo les and cans to make
household refuse into manure. flower pots or pen holders.
In this method, we dig a small pit and put v Big n cans or containers can be used to
biodegradable wastes into it. Therea er, it store household items.
is covered with leaves or grasses. As soon as v Rainwater can be used for washing and
these wastes accumulate, microorrganism cleaning. It can also be used to water
rapidly grow in number and the waste is plants.
broken down into compost or manure. v Torn clothes can be used to make
flowers, wall hanging or doormats.
Vermicompos ng is a new technique of
conver ng organic waste into manure. In
You might have heard about the Rock
this type of compos ng, earthworms are
Garden of Chandigarh. Do you know, this
used. Earthworms eat soil and various
beau ful garden was developed by a
kinds of organic ma er and then excrete
person, Nek Chand? He collected broken
it as manure. This type of manure is very
glasses, plates, cups and other crockery
useful and does not cause any environ- items to make this garden. Now, this
mental problem. garden is one of the most a rac ve
places of Chandigarh.
Science-6 177
