11-3 Water Pollution

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11-3 Water Pollution Page 284

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11-3 Water Pollution. Page 284. A. Introduction. 1. Water pollution is the introduction to chemical, physical or biological agents into water that degrade water quality. B. Point-Source Pollution. 1. one source of pollution. B. Point-Source Pollution. - PowerPoint PPT Presentation

Transcript of 11-3 Water Pollution

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11-3 Water Pollution

Page 284

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A. Introduction

• 1. Water pollution is the introduction to chemical, physical or biological agents into water that degrade water quality.

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B. Point-Source Pollution

• 1. one source of pollution.

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B. Point-Source Pollution

• 2. Examples include factory or water treatment plant.

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C. Nonpoint Source Pollution

• 1. Also known as runoff pollution.

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C. Nonpoint Source Pollution

• 2. comes from many different sources; difficult to identify.

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D. Wastewater

• 1. water containing waste from homes and/or industry.

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D. Wastewater

• 2. needs to be treated by water treatment plants.

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D. Wastewater

• 3. the solid material left behind is called sewage sludge which is burned and the ashes are buried in the landfill.

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E. Artificial Eutrophication

• 1. Eutrophication= increase in the amount of nutrients.

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E. Artificial Eutrophication

• 2. Artificial Eutrophication= increase in nutrients due to sewage or fertilizer runoff.

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F. Thermal pollution

• 1. occurs when power plants and other industries use water in their cooling systems and release the warm water into lakes/rivers.

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F. Thermal pollution

• 2. As a result, a significant amount of aquatic organisms die off; ecosystem is disrupted.

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G. Groundwater Pollution

• 1. pollution in the surface water percolates (spreads) down into the soil and collects as groundwater.

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H. Ocean Pollution

• 1. Ships may legally dump waste in some parts of the oceans.

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H. Ocean Pollution

• 2. Oil spills cause major disruptions in ecosystems.

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H. Ocean Pollution

• 3. Surprisingly, most oil pollution occurs from nonpoint sources on land.