1. WASTE MANAGEMENT- WASTE
DISPOSAL METHODS
- REDUCING WASTE STREAM-
WASTE DISPOSAL METHODS
To know where the wastes go
Waste management stresses ‘Three Rs’
Reduction, reuse and recycling before
destruction

2. OPEN DUMPS
 Unregulated dumps
 Where people drop garbage
 Disposal of wastes is serious problem
 Enormous wastes
 Mexico city generates 10,000 tons of waste every day
 Wastes exposed to wind rain rats, flies
 Developed countries forbid open dumping
 Waste accumulated along road sides
 Feeding of garbage to hogs
 Health hazards associated with it
 Odours , flies, rats, sanitation hazards
 Razor blades, glass hazardous for hogs

3. OCEAN DUMPING
Oceans are not for waste disposal
Every year 25,000 metric tons of packaging
1,50,000 tons of fishing gear, 1000 km of nets
are discarded in sea.

4. LAND FILLS
Solid waste disposed by land fill
By filling the refuse
Land fills built away from rivers
Rising land prices, transport costs
More expensive disposal method
Major cities do not have enough dumping
place

5. WASTE EXPORT
American cities are sending wastes to Africa
Local people are unaware of this
It is objectionable

6. INCINERATION AND RESOURCE
RECOVERY
Burning after sorting
Energy being extracted
Energy being recovered from technology
Waste to resource
By burning, used for heating, generating
electricity
They produce steam or electricity
Sort the refuse before combustion
Giant furnace are burnt as much as possible
Causes greater problems of air pollution

7. REDUCING WASTE STREAM
Shrinking waste stream
Recycling with benefits

8. RECYCLING
Reprocessing of discarded material into new
useful methods
Different from reusing
Recycle material for same purpose
Steel cans become new automobiles and
construction materials
Recycle saves money, energy, raw materials,
reduce pollution

9. ENERGY FROM WASTE
Energy extracted from wastes
If used for constructive purposes it contributes
to global warming

10. SOURCES OF ALTERNATE ENERGY
Non-conventional sources of energy
Sources of energy are solar energy, wind
energy, tidal energy
These energy sources are pollution free

11. REUSE AND LESS WASTE PRODUCTION
Reuse preferred to recycling
It is eco-friendly
It is clearing and reusing materials
The process to save costs and energy
It is creative and sufficient way to reduce
wastes