Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 16 (Q.No. 13)
13.
The correct sequence of processes in a water treatment plant for rural water supply is
Chlorination, aeration, sedimentation, rapid sand filter
Coagulation, sedimentation, slow sand filter, chlorination
Coagulation, flocculation, clarification, pressure filter
Aeration, plain sedimentation, slow sand filter, chlorination
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
5 comments Page 1 of 1.

Skn said:   6 years ago
Coagulation-flocculation is a chemical water treatment technique typically applied prior to sedimentation and filtration (e.g. rapid sand filtration) to enhance the ability of a treatment process to remove particles.

Shai said:   7 years ago
D is the correct answer.

Dolly said:   7 years ago
D is the correct one.

Vikram SyaL said:   7 years ago
Rapid sand filter can be used for rural area, so option a is wrong and before slow sand filter coagulation can be used so option b is also wrong, pressure filter with coagulation can't be used and also not used for rural area, slow sand filter is used or rural areas, so option D is right.
(1)

Paradee said:   8 years ago
The correct answer is D.

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