Question:
Choose the correct option(s) for removing solids from water.
Choose the correct option(s) for removing solids from water.
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Remember:
- Use coagulation-flocculation-sedimentation for suspended solids.
- Use filtration for fine solids.
- Use chlorination for killing microorganisms — not solids!
Updated On: Apr 19, 2025
- chlorination
- coagulation-flocculation-sedimentation followed by slow sand filtration
- chlorination followed by aeration
- slow sand filtration
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The Correct Option is B, D
Solution and Explanation
Step 1: Understand roles of each treatment method.
Chlorination is used for disinfection — it targets pathogens, not solids.
Coagulation, flocculation, and sedimentation are classical methods to remove suspended solids.
Slow sand filtration is a physical process effective in removing fine particulates.
Step 2: Evaluate options.
(A) is incorrect: chlorination does not remove solids.
(B) is correct: standard process chain for solids removal.
(C) is incorrect: aeration and chlorination are not aimed at solid removal.
(D) is correct: slow sand filtration is effective for solids.
Chlorination is used for disinfection — it targets pathogens, not solids.
Coagulation, flocculation, and sedimentation are classical methods to remove suspended solids.
Slow sand filtration is a physical process effective in removing fine particulates.
Step 2: Evaluate options.
(A) is incorrect: chlorination does not remove solids.
(B) is correct: standard process chain for solids removal.
(C) is incorrect: aeration and chlorination are not aimed at solid removal.
(D) is correct: slow sand filtration is effective for solids.
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