Civil Engineering - Water Supply Engineering - Discussion

Discussion Forum : Water Supply Engineering - Section 2 (Q.No. 14)
14.
Flow through period, in sedimentation tanks, is
equal to detention period
more than detention period
less than detention period
detention period divided by displacement efficiency
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
19 comments Page 2 of 2.

Lalit said:   6 years ago
Displacement efficiency = (flow through period/theoretical detention time )*100.
Flow through period Decreases theoretical detention time increases.

Aravind said:   6 years ago
Settling time or flow through time should be less than or equal to detention time for 100% removal efficiency.

Amarnath said:   7 years ago
The answer given is right if you consider comparison between Settling velocity and flow velocity.

Hapster said:   4 years ago
Flow through period is always less than the detention time due to short circuiting.
(1)

Chirag Verma said:   7 years ago
Displacement efficiency = (flow through period/theoretical detention time )*100.

Samm said:   9 years ago
I can't find the difference between two, someones please help to differentiate.

Saravanan said:   8 years ago
I think more than the detention period.

So please clarify me.

Badhon said:   6 years ago
What is the ideal value of displacement efficiency? is it 1?

Sathya Siva said:   4 years ago
Settling velocity must be more than overflow velocity.


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