Civil Engineering - Water Supply Engineering - Discussion
Discussion Forum : Water Supply Engineering - Section 2 (Q.No. 14)
14.
Flow through period, in sedimentation tanks, is
Discussion:
19 comments Page 1 of 2.
Hapster said:
4 years ago
Flow through period is always less than the detention time due to short circuiting.
(1)
Zeenat said:
5 years ago
Flowing through period is the time taken by a batch of water to travel from the entry to exit of settling tank. Because of short circuits produced in water current, flowing through period is less than the detention period.
(1)
Vidya said:
7 years ago
Displacement efficiency is the ratio of flowing through the period to the detention period. Flowing through period is the time taken by a batch of water to travel from the entry to exit of the settling tank. Because of short circuits produced in the water current, flowing through period is less than the detention period. So, the given answer is true.
Sathya Siva said:
4 years ago
Settling velocity must be more than overflow velocity.
Abdullah said:
5 years ago
Displacement efficiency = (flow through period/theoretical detention time) *100.
Flow through period Decreases theoretical detention time increases.
Flow through period Decreases theoretical detention time increases.
Lalit said:
6 years ago
Displacement efficiency = (flow through period/theoretical detention time )*100.
Flow through period Decreases theoretical detention time increases.
Flow through period Decreases theoretical detention time increases.
Badhon said:
6 years ago
What is the ideal value of displacement efficiency? is it 1?
Aravind said:
6 years ago
Settling time or flow through time should be less than or equal to detention time for 100% removal efficiency.
Vipul said:
6 years ago
Flowing through period is the time taken by a batch of water to travel from the entry to exit of settling tank. Because of short circuits produced in water current, flowing through period is less than the detention period.
Sindhu said:
6 years ago
Flow through period should be less than the the detention time so that the particles can settle down. If it is greater than the detention time then particles won't get a chance to settle down.
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