by nicola recky morrison- Water

2. Decomposition
• Decomposition is the break down of organic
matter, by bacteria by organisms.
Decomposition in waste treatment takes place
mainly in landfills. Landfills are sites for
disposal of waste materials by burial.

3. Respiration
• Is the chemical process by which energy is
released from the breaking down of glucose or
other food substances.
Respiration has to be present in the breaking
down of waste materials, because organisms
such as bacteria get their energy from this
type of respiration especially if they are
classified as domestic waste which is mainly
from the household. Example: paper, plastic
and waste food materials.

4. Hazardous Waste
Industrial Waste
Solid waste
Types of Wastes
Agricultural Waste Medical waste
Solid Waste

5. Paper
Cans
Solid Waste
Plastics
Bottles
Containers

6. Solid Waste
• Solid are any discarded materials, which
mainly include house hold waste with the
addition of commercial waste.

7. Example of how Solid Waste are
treated # 1
Landfills

8. Example of Solid Waste: Waste Treatment for Paper
• Recycling- Hand-made recycling
Step 1 Step 2 Step 3
Step 4 Step 5 Step 6 Step 7

9. Paper treatment recycling process
After work
Step 8
Paper is set to dry
Can be use for post cards ,note books etc

10. Tires
Building waste Pesticide
Agricultural Waste
scrap metal
Manure

11. Waste treatment for Tires
Tyres :Silage clamping

12. Silage Clamp
• Silage is a form of conservation of grass
produced by farmers. This grass is feed to
cattle and sheep. The tires are placed on top
of the grass so that the moisture is being kept
in side the grass and to conserve them
especially in winter when less grass are grown.

13. Example: Waste treatment of Sharps
(needles and knives)
A sharp container
Safety box
An incinerator

14. Reactive:Examples:
Peroxide solutions
Ignitable Waste: Examples: Hypochlorite solutions or solids
Waste oils
Used solvents
Organic cleaning materials
Paint wastes
Hazardous Waste
Corrosive Waste: Examples:
Toxic Waste
acids from metals cleaning
processes
Waste pesticides

15. Example of waste treatment: Toxic
(liquid form)
• This may be pumped deep underground, by
deep-well injection. The well must be drilled
below aquifers, into porus rocks separated by
imperious clay.

16. Ash ( from combustion)
Sludge
Industrial Waste
Waste gases
Scarps

17. Example of waste treatment: Scraps
from factories after manufacturing
(paper, plastics, mental)
These waste is treated by either:
Reduce, reuse and recycling
Reduction methods
Treatment methods
Incineration systems
Landfilling

18. Recycling
• Recycling is processing used materials into
new products to prevent waste of potentially
useful materials, reduce the consumption of
fresh raw materials, reduce energy
usage, reduce air pollution and water
pollution by reducing the need for
"conventional" waste disposal, Recycling is a
key component of modern waste reduction.

19. Incineration
• Hospital waste incineration involves the
application of combustion processes under
controlled conditions to convert wastes
infectious and pathological material to inert
mineral residues and gases. The incineration
systems are the same than other type of
wastes.