5.1 Nature of Pollution. Sub-subtopics 5.1.1 Define the term pollution. 5.1.2 Distinguish between the terms point source pollution and non-point source.

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Presentation transcript:

5.1 Nature of Pollution

Sub-subtopics Define the term pollution Distinguish between the terms point source pollution and non-point source pollution, and outline the challenges they present for management State the major sources of pollutants.

5.1.1 Pollution ● “the addition to the biosphere of a substance or an agent (such as heat) by human activity, at a rate greater than that at which it can be rendered harmless by the environment.” – Rutherford, pg. 276

3.1.1 Examples of Pollution ● Gases ● CO 2 ? ● Ozone (O 3 )? ● Liquids ● Solids ● Noise ● Light ● Heat

5.1.2 Point Source Pollution Pollution from an easily recognizable, single site Chernobyl (26 April, 1986) Bhopal, India (2-3 December, 1984) Tailpipe of a car (multiple point sources can act as a non-point source) Easy to manage/regulate Identifiable source (factory chimney, waste disposal pipe, oil tanker, etc.) Identifiable culprit (factory, house, drilling platform, etc.)

5.1.2 Non-point Source Pollution Pollution released from numerous, widely dispersed sites Chemical fertilizers Neighborhoods/cities Runoff Difficult to manage/regulate Who is the culprit? More widespread laws difficult to enforce Air pollution spreads hundreds of kilometers

Sources and Effects

5.1.3 Major Pollutants (from Rutherford, table 15.1, pg 277) MAJOR SOURCE POLLUTANTEFFECTS Combustion of fossil fuels ● Carbon dioxide CO 2 ● Sulfur dioxide SO 2 ● Nitrogen oxides NO X ● Photochemical smog ● Carbon monoxide CO ● Greenhouse gas; climate change ● Acid deposition; respiratory problems ● Respiratory infections, eye irritation, smog ● Damages plants, eye irritation, respiratory problems ● Suffocation (binds w/ hemoglobin in red blood cell) Domestic waste ● Organic waste (food & sewage) ● Waste paper ● Plastics (containers & packaging) ● Glass ● Tins ● Eutrophication; water-borne diseases ● Landfill; deforestation ● Landfill; derived from oil ● Manufacturing energy; landfill (recyclable) ● Landfill (recyclable) Industrial waste ● Heavy metals (Hg, Pb, Cd, etc.) ● Fluorides ● Heat ● Lead ● Acids ● Poisoning ● Reduces oxygen solubility (BOD) ● Disabilities in children; poisoning ● Corrosive Agricultural waste ● Nitrates ● Organic waste ● Pesticides ● Eutrophication ● Eutrophication; spread diseases ● Biomagnification; bioaccumulation

5.1.3 AIR Pollutants – EU

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5.1.3 Major Pollutants - LAND Retrieved on from: