1 / 16

Environmental pollution

First stage/Department of Environmental Health. Environmental pollution. Lec 7 Land pollution Mohammed Al- Jawasim. What is land pollution?. Land pollution is the destruction of the earth’s land surfaces , often directly or indirectly as a result of human activities It occurs when

mariebradford
Download Presentation

Environmental pollution

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. First stage/Department of Environmental Health Environmental pollution Lec 7 Land pollution Mohammed Al-Jawasim

  2. What is land pollution? • Land pollution is the destruction of the earth’s land surfaces, often directly or indirectly as a result of human activities • It occurs when • Waste is not disposed off properly, • Humans throw chemicals into the soil in the form of pesticides, insecticides and fertilizers during agricultural practices. • Exploitation of minerals (mining activities)

  3. What is land pollution? • Since the Industrial Revolution, natural habitats have been destroyed, and environments have been polluted, causing diseases in both humans and many other species of animals. • Human actions have also caused many large areas of land to lose or reduce their capacity to support life forms and ecosystems. This is known as land degradation.

  4. How does land pollution affect us? • Land pollution pollutes the environment and our ecosystems. • It causes health problems like birth defects, cancer, and respiratory problems. • It can harm wildlife like plants and animals.

  5. What if land pollution is not fixed? • Land will become unreliable for life and agriculture. • Land pollution becomes hazardous to our health. • Landfills and waste dumps increase in size, which takes up a lot of land and space from wildlife and humans.

  6. Sources of land pollution • 1-Agricultural sources: • These include • waste matter produced by crop, • animal manure, • farm residues. • pesticides,fertilizers and insecticides used for agricultural activities

  7. Sources of land pollution • 2-Mining sources • Mining and forestry activities that clear the land surfaces (clear cutting) and use 'skid trails' often leave the land unrestored . • The surface is exposed to erosion which destroys the quality of the land. • Additionally, iron and other chemicals such as copper, mercury and lead from mining practices leach into the soil, polluting it and leaving it exposed to water bodies as well.

  8. Sources of land pollution • 3-Wastewater treatment • Wastes that are left over after sewage has been treated, • biomass sludge, • settled solids. • Some of these are sentdirectly to landfills whiles other treatment plants burn themto generate electricity.

  9. Sources of land pollution • 4-Construction sources: • These include waste that are produced from construction activities such as: • debris • wood • metals • plastics

  10. Sources of land pollution • 5-Industrial sources: • These include • paints • chemicals • metals • plastics and so on that are produces in the process ofmanufacturing goods.

  11. Sources of land pollution • 6-Urbanization • Productive areas is fastreduced because ofdevelopmental activitiessuchas human settlement,industries, roads , railways,airports etc.

  12. Sources of land pollution • 7-Dumping of solid wastes • It isone of the most important factors which are responsible for the land pollution. • Indeveloping countries like India, the garbage is simply dumped leading to land pollution.

  13. How to prevent land pollution? • Like many other challenges, the best way to solve problems is to understand it. • This means learning about it (like what you are doing now) is the greatest step forward. • People should be educated and made aware about the harmful effects of littering. • Discuss with friends and family and talk about it…

  14. How to prevent land pollution? • The greatest prevention to land pollution is in the three ‘R's’ … • Reduce Waste, Re-use things and Recycle things. • This is true even for governments. They can also use the three ‘R’ rule to minimize the amount of waste that ends up in landfills. • After the three 'R's, remember to turn the rest of the garbage into compost.

  15. What can we do to reduce land pollution? • Buy biodegradable products. • Store all liquid chemicals and waste in spill proofcontainers. • Eat organic foods that are grown without pesticides and fertilizers. • Don’t use pesticides if you can. • Buy products that have little packaging.

  16. References • Hill, M. K. 2010. Understanding environmental pollution. 3rd Edition. Cambridge University Press. • Radojevic, M. & Bashkin, V. 2007. Practical environmental analysis. 1st edition. Royal Society of Chemistry. • Raven H. P. &Berg R. L. 2005. Environment. 5th edition. United States of America: Wiley PLUS.

More Related