Showing posts from April, 2019

Definition of Pollutant? Types and Classification?

Definition of Pollutant: "Any substance which cause pollution is called pollutant. e.g. plastics, pesticides, Lead, mercury, Carbon oxides, Particulate matter, bacteria  etc."
"Pollutant is any solid, liquid or gaseous substance present in such concentration as may be or tend to be harmful to the environment."

Pollutants can be divided into four types:Solids: Metal, plastic, paper, wood, leaves, human waste, animal waste etc Liquid: Oil, Chemicals (Acids, bases), pesticides, detergents etc Gaseous: Chlorofluorocarbons (CFCs), Methane, Hydrogen sulphide, carbon dioxide, carbon monoxide, Nitrogenous gases (NOx), Sulfurous gases (SOx) etc.  Biological: Bacteria, fungi,  virus etc. Classification of Pollutants The pollutants can be classified into two basic groups: (a) Degradable pollutants or Bio-degradable Pollutants (b) Non-degradable Pollutants: (a) Degradable pollutants or Bio-degradable Pollutants:     These are organic substances which can be decomposed by the natu…

Definition of Pollution

Pollution is the introduction of harmful substances or products into the environment. Pollution causes damage to human, plant and animal life. 1996 EU Directive on Integrated Pollution Prevention and Control provides thefollowing definition:Pollution shall mean the direct or indirect introduction as a result of human activity, of substances, vibration, heat or noise into the air, water or land which may be harmful to human health or the quality of the environment, result in damage to material property, or impair or interfere with amenities and other legitimate uses of the environment.

USEPA (1989) has defined Pollution as“generally,  The presence of matter or energy whose nature, location, or quantity produced undesired environmental effects.