What is the purpose of adding alum and lime to water during the process of water treatment?
What is the purpose of adding alum and lime to water during the process of water treatment? Flocculation removes much of the color and contaminants from raw water. Beginning with a sample of visibly muddy water, visitors use lime and alum is to coagulate suspended particles. Hydroxide ions make water solution basic. What does lime do in water treatment? Lime softening is a water treatment process that uses calcium hydroxide, or limewater, to soften water by removing calcium and magnesium ions. In this process, hydrated lime is added to the water to raise its pH level and precipitate the ions...