There are number of concepts about waste management which vary in their usage between countries or regions. Some of the most general, widely used concepts include:
Waste hierarchy – The waste hierarchy refers to the
“3 Rs” Reduce, Reuse and Recycle, which classify waste managements strategies according to their desirability in terms of waste minimization strategies. The aim of the waste hierarchy is to extract the maximum practical benefits from products and to generate the minimum amount of waste.