Which method is used for purification of water by alum?
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Answer:
Co - agulation
Explanation:
Alum is used to settle suspended matter in water,This process is called co agulation. Wikipedia says”In water treatment, coagulation is a process that occurs when a coagulant is added to water to "destabilize" colloidal suspensions. Conversely, flocculation involves the addition of polymers that clump the small, destabilized particles together into larger aggregates so that they can be more easily separated from the water. Coagulation is a chemical process that involves neutralization of charge whereas flocculation is a physical process and does not involve neutralization of charge.” Alum is used as coagulant..It make water acidic you need to neutralize this by adding lime.
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Answer:
Explanation:co aglucture
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