CLASSIFICATION
OF WASTES
ACCORDING TO
THEIR
PROPERTIES

a. Biodegradable
• wastes that can be broken
down(decomposed)into their
constituent elements by bacteria and
other microorganisms.
• the term can be applied to both liquid
and solid waste.

Examples:
• Human and animal waste
• Food waste
• Paper
• Agricultural waste

b. non-biodegradable
• any discarded item that cannot
be broken down by living
organisms
• accumulates in the environment
because it cannot return to its
origins

EXAMPLES:
• Plastics
• Bottles
• Old machines
• containers

CLASSIFICATIONS OF WASTES ACCORDING TO
THEIR EFFECTS ON HUMAN HEALTH AND THE
ENVIRONMENT
1.HAZARDOUS WASTES
- unsafe substance used commercially,
industrially, agriculturally, or economically.

Examples:
• paint
• Motor oil
• Pesticide
• Drain opener
• Prescription drugs
• Air freshener
• batteries

b. non-hazardous
• Safe substances used commercially,
industrially, agriculturally, or economically

Examples:
• Papers
• Cardboard
• Linings
• Wrappings
• Paper packaging materials

Why is it important to dispose our
garbage properly?

Why is it important to segregate wastes?

What should be done to hazardous
wastes?

EVALUATION:
• Draw a biodegradable and non-biodegradable wastes.
SCORING RUBRIC
Content 2 pts.
Workmanship 2 pts.
Neatness 1 pt.
___
5 pts.