Monday, 2 October 2017

Disposal of waste

Disposal of solid waste
          
There are various ways of disposing safely and wisely. Some ways are following:

Open Dumping: Open Dumping means throwing the wastes in the open area which is outside the city or town, where the movement of people is less. This waste keeps decaying over a period of time.
          Disposal of wastes in this method is not good, because it pollutes the air by breeding more and more germs. It gives a foul smell and makes our surrounding air dirty.

Composting: Composting is a natural way of making waste useful. When fruits and vegetable peels, dead leaves and cow dung are dumped in a pit and covered, then microbes work on them and help to rot them. They mix them with the soil and form compost or manure. This is called Composting.

Bio gas: Bio gas is made from peels, seeds, pulp and other

Biodegradable wastes. When these wastes are filled in tanks and 


covered, then it is treated in a special way to make a clean and non-

smelling gas called bio gas. This gas is safe and used for cooking 

and other domestic uses.

Sanitary Land Filling: Sanitary land filling means throwing the waste in a deep pit. When this pit is full, it is closed with a thick layer of soil. Water is poured over it. After sometime all the wastes materials get composed and become a good manner.
          It is a good way of disposal, because it does not pollute the air. In village, similar practice is adapted by making compost pits.

Incineration: Incineration means burning the waste materials in open space. First, all the waste materials are dumped and allowed to dry. When they are dried, they are burnt. This does not allow germs to grow but causes air pollution.

Our Environment

The environment is everything that is around us, especially the air, water, soil, plants and animals. So, it is very important that we take care of the environment.

What is waste?
            
         Any material that is of no use to us is called waste. It includes household waste like old and torn clothes, utensils, vegetables and fruits peels, batteries, dry leaves, etc. If these wastes will not be disposed, it would make our surrounding dirty. Dirty surroundings cause diseases and make us ill.

Solid waste
          Solid wastes are often called garbage, rubbish or trash. They can be of two kinds: Biodegradable and non-biodegradable wastes.

Biodegradable waste: Biodegradable is a waste that will decay and mix with soil. This includes food waste such as fruits and vegetables peels, meat and bones, leaves, flowers, papers and pencil shavings.

 Non-biodegradable waste: Non-biodegradable is a waste that will not decay and mix with soil. This includes plastics such as bags and packing materials, metal like containers, cold drinks cans and glass such as broken crockery, bottles, bulbs, etc.

Structure of the flower

S tructure of the flower A flower has four main parts: Sepals, petals, stamen, and pistil or carpel. 1.     Sepals: Sepals are the g...