Sources of waste

Commercial waste

Commercial wastes are those waste which are generated commercial establishments such as hotels and restaurants, markets, offices, stores, theaters, restaurants, markets, stores, office buildings, hotels, print shop, auto repair shops, etc.






Commercial waste may be following types

Agricultural waste

This waste may be in the form of followings types , and these can enter the water table as run-off from agricultural land.

Industrial waste 

All industries generate waste products. Many kinds of wastes are a result of manufacturing products or other industrial process.

Bio-medical waste

Bio-medical waste are generated from the hospital activities including laboratories and other associated areas. Bio-medical wastes includes biological wastes, cultures, animals remains, chemotherapy wastes and stocks of infectious agents, pathological wastes and medical instruments, etc.






These wastes can again be classified into the following types :

Meaning and sources of waste

What is waste ?

A materials which are usually useless and unwanted are called waste.
Dead and decaying remains of plants and animals by products of metabolic activity of plants and animals useless materials to stores, offices, restaurants, industries, pesticides, herbicides sprayed on agricultural land, tannery effluents, etc.

What are the sources of waste ?

Domestic waste

The materials discarded by human beings in their day to day activities are considered as domestic wastes. Flow chart of domestic wastes shown below :

these wastes may be classified into the following types :

1. Ashes
2.Food wastes
3.Plastic bags
4.Human excreta
5.Rubbish

Ashes

Residue left over from coke , the burning of wood, coal, etc. or from partially burnt materials.








Food waste

The animal, fruit or vegetable residues resulting from preparation, the handling, cooking, and eating of food.










Plastic bags

Used plastic bags made of synthetic materials are often thrown away.








Human excreta

Any product of metabolism that is not needed for further metabolism processes and is excreted from the body is termed excreta.
Common waste products include nitrogenous compounds waste as urea and ammonia.

Rubbish

Waste materials such as paper cardboard, plastics, rubbers, glass, broken utensils, wood furniture, etc.