Waste disposal in urban areas

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Waste disposal in urban areas
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Did you know?

• In the UK each year ink cartridges alone account
  for landfill the size of an aircraft carrier.

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Problems of landfill

• Negative impacts are referred to as "secondary
  pollution" - primary objective is to avoid an
  environmental pollution in city area by removing
  it.
• An indispensable public facility for any modern
  city.
• To make the landfill site acceptable by local
  people, it is necessary to minimize the secondary
  pollution and resulting adverse impacts.
• It is also necessary to formulate a post-closure
  site use plan considering opinions of local
  people.

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Secondary effects

• Water contamination - Leachate generated from
  landfill site, if not treated, contaminates
  river, sea and underground water.
• Gas generation - Main gases generated from the
  landfill site are methane, ammonia, hydrogen
  sulphide and carbon dioxide.
• Offensive odour - There are two type of offensive
  odor generated from the landfill site. One is the
  odour generated from waste itself and the other
  is gases generated through waste decomposition .
• Pests - Kitchen waste tends to be the hotbed for
  flies, and attracts rodents and crows.
• Noise and vibration - Incoming waste transport
  vehicles and landfill equipment may be sources of
  noise and vibration.
• Fire may occur spontaneously due to methane gas
  generation or use of chemicals. Fire also may be
  caused by scavengers or other people.

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