A water purification working model demonstrates how filtration removes impurities from water, making it clean and safe for use. This model uses simple materials like big gravel, small gravel, soil, tissue paper, and paper cups to explain a basic filtration process.
Components of the Model
- Paper Cups: Act as layers to hold the filtering materials. Create holes at the bottom of each cup for water flow.
- Filtering Materials:
- Big Gravel: Removes large particles like leaves or stones.
- Small Gravel: Filters smaller debris.
- Soil: Traps fine dirt and organic matter.
- Tissue Paper: Acts as the final filter to remove very fine particles.
- Collection Cup: A paper cup at the bottom collects the purified water.
- Dirty Water: A mixture of water, dirt, and small debris to simulate impure water.
How It Works
- Layering: Arrange the materials in a paper cup from top to bottom in this order: big gravel, small gravel, soil, and tissue paper.
- Pouring Dirty Water: Pour the dirty water slowly into the topmost layer.
- Filtration Process:
- The big gravel removes large impurities.
- The small gravel traps smaller particles.
- The soil absorbs and filters fine impurities.
- The tissue paper ensures the water is further cleaned by removing the smallest particles.
- Collection: Clean water drips out from the holes at the bottom into the collection cup.
Conclusion
This working model effectively demonstrates how natural filtration works in water purification. It’s a simple yet powerful way to explain an essential process used in households and water treatment plants to provide clean water.