Land pollution

Sets out basic land pollution

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Land pollution

2 types of waste:

  • biodegradable: waste that can be decomposed, eg, vegetables and paper
  • non-biodegradable: waste that can't be broken down, eg, plastic

Rubbish disposal

Landfill - less air pollution, although land is running out

Incineration - less land is used, although it causes air pollution

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Recycling paper

Advantages of recycling paper:

  • less deforestation
  • less land used up
  • less soil erosion
  • maintains habitats

Disadvantages of recycling paper:

  • expensive
  • paper is usually not of a great quality
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  • the addition of nutrients to water from slurry, sewage and fertiliser run-off.
  • this leads to increased algal growth
  • when the algae die they are decomposed by bacteria and fungi
  • bacteria and fungi use up oxygen for respiration
  • this causes fish and other organisms living in the sea to die as the will not have a sufficient supply of oxygen.

A similar process to this happens when warm water from industrial cooling plants is released into waterways. This contains less oxygen and is warmer which causes increased algal growth.

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Reducing water pollution

Water pollution can be reduced in the following ways:

  • more careful use, storage and disposal of silage effluent, slurry and fertiliser.
  • sewage treatment
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