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8.3 Solid domestic waste - Coggle Diagram

- - - - 3R
      - compost
  - - - educate for waste separation
      - tax disposable items
      - legislate waste separation
      - separate waste by type
  - - - reclaim landfills
      - incinerate SDW for energy
      - collect plastics
- - - - burn the waste at high temperatures up to 2000°C
      - waste-to-energy: heat generated is used to generate steam to drive a turbine of heat buildings directly
      - creates air pollution, particularly dioxins (from plastics), heavy metals like Pb and Cd (from batteries) and NOx
      - ash can be used in road buildings
      - take up less space compared to landfills but plants are expensive to build and deteriorate quality of life in the surrounding area
    - - waste is taken to a suitable site and is buried.
      - lined with special plastic liner to prevent leachate from seeping out and are collected in pipes
      - methane is collected and used to generate electricity or vented out into the atmosphere
      - cheap cost. land can be reused after the site is closed and settled
    - - methane produced used for fuel while digestate (waste left) is used as fertiliser/soil conditioner