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GCSE Combined Science · key term
The addition of chlorine to water to kill harmful bacteria and other microorganisms.
Used by Edexcel
Specification Methods of separating and purifying substances · Paper 3, Paper 4
Revise: Potable water and water for analysisTo describe how these waters can be made potable, the key treatment stages are sedimentation, filtration and chlorination.
For waste and ground water, name each stage and its purpose: sedimentation settles solids, filtration removes remaining solid particles, and chlorination kills microorganisms.
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