• Water pollution
• Air pollution
• Soil pollution
• Noise pollution
Water pollution
Water pollution is caused by the release of waste products and contaminants into the water bodies such as rivers, lakes, ponds, streams and oceans. There are two general types of water pollution: point source and non-point source. Point sources of water pollution are municipal and industrial wastewater coming from a distinct ‘point’ such as a sewer outfall.
Non point sources of water pollution cannot be easily traced back to a particular location. This type of water pollution is diverse and comes from everyday land use activities such agriculture, residential development, construction and forestry. Non point sources of water pollution involve three natural processes: storm water runoff, erosion and sedimentation. Rainwater flowing across land and entering streams and lakes is known as stormwater runoff. The force of the runoff breaking up the soils and detaching individual soil particles is termed erosion. The soil particles are eventually deposited into nearby streams and rivers and this process is called sedimentation.
Air Pollution
Air pollutants can be classified into primary or secondary.
a) Primary pollutants
Primary pollutants are harmful chemicals that enter the air directly as a result of human activities e.g. when carbon-containing substances burn partially,either (CO) or completely, (CO2) and also natural events e.g. emission of SO2 from volcanic eruption or anthropogenic activities e.g., burning of fossil fuels with sulphur impurities.
b) Secondary pollutants
These are pollutants formed in the atmosphere by chemical interaction, among primary air pollutants and normal atmospheric constituents.
marto answered the question on March 20, 2019 at 11:44
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