1. Comeniusproject: waterworks Comeniusproject: waterworks March 2011 Finnland

2. Comeniusproject: waterworks Built: 1966 - 1969 Commissioning date: 1969 Conditioning of water: 194.000m³/day Waterworks/barrage Grane

3. Comeniusproject: waterworks  Length of causey: 67m  Height of causey: 600m  Connected with other barrages: Innerste and Oker Innerste and Oker  Used for: energy production flood control flood control low water raising low water raising drinking water abstraction drinking water abstraction

4. Comeniusproject: waterworks How does a waterworks work? 1. Water is collected →natural water 2. Coagulant is added →organic substances are bonded 3. Filtration with quartz sand →the flocks are separated

5. Comeniusproject: waterworks 4. Deacidification with calcium carbonate →raise pH 5. Water is fumigated →last tertiary treatment 6.Water is collected →pure water 7. Water is drinkable

6. Comeniusproject: waterworks Waste products Filter cleaned ↓ mud produced ↓ water is extracted of the mud ↓ The mud is used to produce bricks

7. Comeniusproject: waterworks Our planet 70% of the earth is covered by water. Just 3% of it is drinkable freshwater. Just one third of the freshwater is achievable for us.

8. Comeniusproject: waterworks Water consumption of a European  Personal hygiene: 46L  Toilet: 34L  Washing: 15L  Business: 11L

9. Comeniusproject: waterworks  Cleaning flat and car: 7L  Dishwasher: 7L  Garden: 4L  Food and water: 3L  Altogether: 127L/day!

10. Comeniusproject: waterworks Global water consumption

11. Comeniusproject: waterworks How to save water?  Taking a shower instead of having a bath  Never forget to close the water tap  Use water butts for the garden  Buy water–saving equipment  Buy food produced in your region

12. Comeniusproject: waterworks Thank you for your attention!