Chapter 19 land pollution
This presentation is the property of its rightful owner.
Sponsored Links
1 / 14

Chapter 19 Land Pollution PowerPoint PPT Presentation


  • 65 Views
  • Uploaded on
  • Presentation posted in: General

Chapter 19 Land Pollution. Section 19.1 – Solid Wastes. Solid wastes – all garbage and sludge products from agriculture, forestry, mining, and municipalities. Includes: garbage, trash, junk, scrap and sewage. Garbage Disposal in the Past. People disposed of garbage in the streets .

Download Presentation

Chapter 19 Land 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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Chapter 19 land pollution

Chapter 19 Land Pollution


Section 19 1 solid wastes

Section 19.1 – Solid Wastes

  • Solid wastes – all garbage and sludge products from agriculture, forestry, mining, and municipalities.

    • Includes: garbage, trash, junk, scrap and sewage.

  • Garbage Disposal in the Past.

    • People disposed of garbage in the streets.

    • 1892 – outbreaks of typhoid fever (bacterial disease) and cholera (intestinal bacterial infection) forced NY officials to establish better sanitary condition's.


Section 19 1 solid wastes1

Section 19.1 – Solid Wastes

  • 1900 – Garbage collected from the streets, loaded into barges and dumped into the ocean.

  • Landfills were established to solve the problem of the polluted waters.

  • Landfill – a site where wastes are disposed of by burying them.

  • About 70% of today’s garbage is dumped in landfills.


Section 19 1 solid wastes2

Section 19.1 – Solid Wastes

  • Problems with landfills.

    • Space

    • Odor

    • Disease

    • Pests

    • Rainfall carries pollutants to

      soli and water. Also known as leaching.

  • Sanitary Landfills

    • Cover waste with layers of soil.

    • Produces methane gas (combustible)

    • Leaching of toxic substances.

    • To prevent need impermeable liners.


Section 19 2 hazardous wastes

Section 19.2 – Hazardous Wastes

Effects of Hazardous Materials

  • Hazardous wastes – solid, liquid, or gaseous wastes that are potentially harmful to humans and the environment, even in low concentrations.

  • Problems

    • Containers leak, wastes enters land and water. Gases (known as oxides) are released into the atmosphere.


Chapter 19 land pollution

Accidents Involving Hazardous Waste


Section 19 2 hazardous wastes1

Section 19.2 – Hazardous Wastes

Classification of Hazardous Materials

1. Reactive wastes – can explode.

Sodium – Metal comes in contact with water

2. Corrosive wastes – can eat through steel and many other materials.

Battery acid and lye (drain-cleaning products).


Section 19 2 hazardous wastes2

Section 19.2 – Hazardous Wastes

  • Ignitable wastes – Can burst into flames at relatively low temperatures.

    - Immediate danger to smoke and fire and fumes.

  • Toxic wastes – chemicals that are poisonous to people

    • Can cause birth defects, cancer and health problems.


Section 19 2 hazardous wastes3

Section 19.2 – Hazardous Wastes

  • Radioactive wastes – radiation that can harm people and other organisms.

    • Nuclear power plants, medical and scientific research

  • MedicalWastes – Old medicines, medicine containers, lab equipment, lab specimens, used syringes, blood vials, and tissue samples.


Section 19 2 hazardous wastes4

Section 19.2 – Hazardous Wastes

Hazardous Home Wastes

  • Ammonia

  • Bleach

  • Toilet-bowl cleaners

  • Drain cleaners

  • Oven cleaners

  • Disinfectants

  • Furniture polish

  • Medicines

  • Paints

  • Oil

  • Pesticides


Section 19 3 topsoil erosion

Section 19.3 – Topsoil erosion

  • Erosion – natural forces that carry away soil.

  • Major causes are wind and running water.

  • Activities such as overgrazing, cultivation, deforestation and poor irrigation causes soil loss and desertification.

  • About 30% of earth’s land has undergone desertification

  • In the U.S., parts of AZ, CO, CA and TX are at risk.


Section 19 3 topsoil erosion1

Section 19.3 – Topsoil erosion

The Grand Canyon


Section 19 3 topsoil erosion2

Section 19.3 – Topsoil erosion

Soil Conservation and Land Management

1. Strip-Cropping – Farmland is plowed so that plowed trips are separated by planted strips.

- Having at least part of the land covered by vegetation reduces topsoil loss.

2. Shelter Belts – Rows of trees are

planted along the edges of a field.

- Also known as windbreaks.

- They slow down the wind to

prevent soil loss.


Section 19 4 controlling pollution on land

Section 19.4 – Controlling Pollution on Land

Reducing the Volume of Waste

  • Disposable items make up about ¼ of all wastes placed in landfills.

  • Reusable items can eliminate that fraction.

    • 50% of waste by communities is paper products

  • Recycling can also eliminate that number.

  • Don’t trash biodegradable products.

    • Biodegradable – substances decompose easily and enrich the soil.

    • Can be used to make a compost pile.

    • Plant waste and certain food waste are used.


  • Login