maandag 14 november 2016

Drinking water

Drinking water
Natural sources 1:
Mountain and spring water
Clean ground water
2:
Rainwater


Purification:
By boiling

By filtering
 Natural filtering
 Membrame filtering

UV light


Desalting:
Desinilation, desalting sea water


Recycling:
Letting it stand, chemical treatment filtering and more

Written by JK


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