Use of hydrated lime in water treatment_________________?
Correct answer: A. All A , B. and C.
- A. All A , B. and C.
- B. After filtration, combats the corrosiveness of water due to the presence of O2 & CO2
- C. Is to adjust the pH value
- D. Before filtration, reduces the bacterial load on filters
Explanation
Hydrated lime is used to raise and adjust pH, aid water treatment before filtration, and stabilize treated water against acidity and corrosion caused by dissolved carbon dioxide. Therefore the three stated uses are included.
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