ComeniusprojectComeniusproject::waterworkswaterworks
MarchMarch 2011 2011
FinnlandFinnland
Comeniusproject: Comeniusproject: waterworkswaterworks
Built: 1966 - 1969Built: 1966 - 1969Commissioning date: 1969Commissioning date: 1969Conditioning of water: 194.000m³/dayConditioning of water: 194.000m³/day
Waterworks/barrage GraneWaterworks/barrage Grane
ComeniusprojectComeniusproject: : waterworkswaterworks
Length of causey: 67mLength of causey: 67m
Height of causey: 600mHeight of causey: 600m
Connected with other barrages:Connected with other barrages: Innerste and Oker Innerste and Oker
Used for: energy productionUsed for: energy production flood controlflood control low water raisinglow water raising drinking water abstractiondrinking water abstraction
Comeniusproject: waterworksComeniusproject: waterworks
How does a waterworks work?How does a waterworks work?
1. Water is collected1. Water is collected
→→natural water natural water
2. Coagulant is added 2. Coagulant is added
→→organic substances are bondedorganic substances are bonded
3. Filtration with quartz sand3. Filtration with quartz sand
→→the flocks are separatedthe flocks are separated
Comeniusproject: waterworksComeniusproject: waterworks
4. Deacidification with calcium carbonate4. Deacidification with calcium carbonate
→→raise pHraise pH
5. Water is fumigated5. Water is fumigated
→→last tertiary treatmentlast tertiary treatment
6.Water is collected6.Water is collected
→→pure waterpure water
7. Water is drinkable7. Water is drinkable
Comeniusproject: waterworksComeniusproject: waterworks
Waste productsWaste products
Filter cleanedFilter cleaned
↓↓
mud produced mud produced
↓↓
water is extracted of the mudwater is extracted of the mud
↓↓
The mud is used to produce bricksThe mud is used to produce bricks
Comeniusproject: waterworksComeniusproject: waterworks
Our planetOur planet
70% of the earth is 70% of the earth is
covered by water.covered by water.
Just 3% of it is Just 3% of it is
drinkable freshwater. drinkable freshwater.
Just one third of the Just one third of the
freshwater is achievable for us.freshwater is achievable for us.
Comeniusproject: waterworksComeniusproject: waterworks
Water consumption of a EuropeanWater consumption of a European
Personal hygiene: 46LPersonal hygiene: 46L
Toilet: 34LToilet: 34L
Washing: 15LWashing: 15L
Business: 11LBusiness: 11L
Comeniusproject: waterworksComeniusproject: waterworks
Cleaning flat and car: 7LCleaning flat and car: 7L
Dishwasher: 7LDishwasher: 7L
Garden: 4LGarden: 4L
Food and water: 3LFood and water: 3L
Altogether: 127L/day!Altogether: 127L/day!
Comeniusproject: waterworksComeniusproject: waterworks
Global water consumptionGlobal water consumption
Comeniusproject: waterworksComeniusproject: waterworks
How to save water?How to save water?
Taking a shower instead of having a bathTaking a shower instead of having a bath
Never forget to close the water tapNever forget to close the water tap
Use water butts for the gardenUse water butts for the garden
Buy water–saving equipmentBuy water–saving equipment
Buy food produced in your regionBuy food produced in your region
Comeniusproject: waterworksComeniusproject: waterworks
Thank youThank you for your for your attention!attention!