Methods of water purification - JSS1 Physical and Health Education Lesson Note

Here are some common methods of water purification:

1. Boiling: One of the most ancient and effective purifying procedures is to boil water. Most microorganisms, such as bacteria and viruses, are killed when water is heated to a rolling boil for at least one minute, making it safe to drink. This method is often used to purify drinking water in households and on camping trips.

 

2. Filtration: This process involves passing water through a physical barrier or filter medium to remove contaminants. Common filtration methods include using ceramic filters, activated carbon filters, and membrane filters, which are effective in removing particles, sediments, and certain types of microorganisms from the water.

 

3. Chlorination: Chlorination is a chemical process that includes adding chlorine to water to destroy bacteria and other pathogens. Chlorine is an effective disinfectant and is often used in water treatment plants to maintain the safety of drinking water.

4. Ultraviolet (UV) Disinfection: Ultraviolet radiation is used to inactivate bacteria in water, rendering them harmless. This method is effective in killing bacteria, viruses, and parasites, and it is frequently used in conjunction with other water treatment processes.