Subject: Enviroment Population and Health
Residues of vegetables, ash, waste paper, broken glass, plastic are some of the solid wates from oue houses, educational institution, office, industry or market area.Residues of vegetables, ash, waste paper, broken glass, plastic are some of the solid wastes from our houses, educational institution, office, industry or market area. When we throw some refuse to an open place and it is mixed with some other particles it becomes solid waste. Solid waste should be managed properly.
Solid waste can be classified into organic and inorganic waste.
The proper management of solid waste is to collect waste from different places, store in the specific places and dispose and use them properly. The principles of solid waste management are described below:
We must try to reduce the production of waste. We should use materials like plastic, chemicals, pesticides etc in less amount.This may help in managing the waste.
The wastes which can be reuse should be used again and again. Plastic bags and other materials made up of plastics should be avoided. We can reuse bottles to keep different spices.
Some of the wastes such as paper, plastics, etc can be collected separately. The unused paper should be recycled to make new materials. Metallic materials such as broken tin, iron pots etc can be used to make new and useful materials. This helps in making environment clean.
Some of the methods of managing solid wastes are described below:
Preparation of compost manure
Organic wastes are separately collected and we can manage to decompose them. Organic waste materials from domestic use and industrial use can be made as compost manure. It is the natural method in which bacteria decompose the wastes and convert them into compost.At first solid wastes are separated into degradable and non-degradable. a small pit of 3ft long and 3ft wide is used in this process. This method is very useful for Nepal.
In this method, wastes are collected in some places and they are thrown in dumping site. If natural land fill site is available, it is easier for this process. If we dump only non-degradable waste, it can sustain for a longer period.
Materials containing carbon (such as plastic, rubber etc) cannot be burnt because it harms. These materials can be burnt in a special type of machine called incinerator.
SODIS is a method in which water is filtered or purified with the help of solar energy.
|Aerobic method||Anaerobic method|
|Aerobic bacteria decomposes the wastage||Anaerobic bacteria decompose the wastage.|
|Air is passed.||Air is prevented|
|It is less stinky.||It is more stinky.|
|The wastes are turn within a period of four to seven days.||Wastes are covered with soil when the pits are filled up.|
|It takes 3-4 months for composting.||It takes 4-6 months for composting.|
|Reuse is the use of the resources for the next time.||Recycle is the after some scientific change.|
|It is cheaper than recycle.||It is expensive than reuse.|
|The previous model is not altered.||The previous model is altered.|
© 2019-20 Kullabs. All Rights Reserved.