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!