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Water Purification and Water Supply
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Water contains
Impurities, microorganisms and dissolved substance
Water purification methods
Boiling, chlorination, filtration and distillation
Boiling
To kill microorganisms
Filtration
To separate suspended particles from liquid
Distillation
To separate suspended particles, dissolved substances and kill microorganisms
Chlorination
To kill microorganisms
The water supply system
Water purification process
Filtration, oxidation, coagulation, sedimentation, filtration and chlorination and flouridation
Water pollutants
Domestic waste, industrial waste, chemicals in agriculture and oil spillage
Importance of water purification
Remove odour, colour, taste, microorganisms and harmful chemicals
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