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Biology Project— Land Pollution in Hong Kong

Biology Project— Land Pollution in Hong Kong. Content. Member list Pollution Sources Effect Method to solve the problem Thanks for The end. Member list. Cheng Tak Shing (4) Ho Chung Ting (7) Lee Chek Fu (9) Wong Chi Fun (15) Yu Choi Yan (19) Yuen Wai Ho (21). Pollution Sources.

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Biology Project— Land Pollution in Hong Kong

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  1. Biology Project—Land Pollution in Hong Kong

  2. Content • Member list • Pollution Sources • Effect • Method to solve the problem • Thanks for • The end

  3. Member list • Cheng Tak Shing (4) • Ho Chung Ting (7) • Lee Chek Fu (9) • Wong Chi Fun (15) • Yu Choi Yan (19) • Yuen Wai Ho (21)

  4. Pollution Sources • The dumping of wastes and deposits. • Many commercial activities result in the production of large volumes of solid waste material. • Human activities of domestic households, commercial and manufacturing business and construction sites .

  5. Pollution Sources There are three main ways of waste disposal • Landfill • Littering • Incineration

  6. Pollution Sources Landfill • About 4/5 to 3/4 of the solid wastes is disposed of by landfilling. • The solid wastes are compressed and covered with soil on landfill sites

  7. Pollution Sources Landfill’s common components : • Tires, • Computers, • Plastic bags, • Packing materials, • Foam, • Paper, • Light bulbs, • Household wastes etc.

  8. Pollution Sources Littering’s main venues: • Parks • Streets • Bus stops • Near shops • Picnic areas

  9. Pollution Sources Incineration • About 1/4 to 1/5 of solid wastes in HK is disposed of by incineration • Reduces the volume of the waste by approximately 85% • Kills the disease-causing organisms at high temperature

  10. Effect • Soil erosion • Landfill gas, like methane, may be generated by the decomposition of organic matter. • Disease carried by mosquitoes, flies, mouse • Lower the living quality of resident

  11. Effect • Groundwater from landfills may contain toxic/harmful chemicals. • Damage to plant and wildlife habitats • Depress the value of surrounding land

  12. Method to solve the problem 4Rs • Reuse, e.g. reuse wastes to do some art works, recharge batteries • Reduce, e.g. use both side of paper, use fluorescent light bulb

  13. Method to solve the problem • Recycle, e.g. put aluminum cans, paper, plastic bottles in recycling bin, recycle metals • Replace, e.g. replace tissues by towels, use shopping bags but not get plastic bag every time

  14. Method to solve the problem • Educate people against wasting and littering. • Organic waste can be dumped in places far from residential areas.

  15. Thanks for • http://www.ust.hk/ • http://www.yahoo.com.hk/ • http://skw.hkcampus.net/

  16. The End

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