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Pollution waste and contaminants (Sources of pollution (Diffuse sources,…
Pollution waste and contaminants
Waste and contaminants
Waste
Unwanted material that has been discarded or eliminated after the completion of a process
Can become a pollutant if not treated properly
Contaminant
Presence of a substance where it does not naturally occur or is found at concentration levels above background levels
All pollutants are contaminants but not all contaminants are pollutants
Natural and manufactured sources of pollution
Natural
Naturally occur in the environment
Manufactured
Light
Thermal
Noise
Sources of pollution
Direct
Emitted directly into the environment (factories)
Indirect
Find their way into the environment (run off)
Point
Emissions from a single, identifiable source
Diffuse sources
Arise over a comparatively large area rather than from a single point
Eventually deposited into bodies of water
Diffuse sources
Fugitive
Unintentionally escape from the sites through leaks
Hard to control
Mobile
Moving sources which emit pollution e.g. moving vehicles
They can be more easily controlled than fugitive emissions
Primary and secondary pollutants
Primary
Emitted directly into the environment
Secondary
Form in the environment through chemical reactions involving primary pollutants
Bioaccumulation
chemical breaks down slowly or does not break down at all and is taken up by plants/ animals
Bioconcentration
the build up of chemical is taken directly from the environment
Biomagnification
The increase in concentration of a substance from one link in a food chain to another
Implication for management strategies
Intentional
Purposefully and will fully released into the environment
Neglectful
Results from not adhering to pollution management processes