A circular settling tank is to be designed for primary treatment of sewage at a flow rate of 10 million liters/day. Assume a detention period of 2.0 hours and surface loading rate of 40000 liters/m2/day. The height (in meters) of the water column in the tank is __________ (rounded off to 2 decimal places).
Correct Answer: 3.25
Solution and Explanation
Top Questions on Sewage Treatment
- In sewage treatment, flocs are:
- CUET (UG) - 2024
- Biology
- Sewage Treatment
- Arrange the steps of biological sewage treatment process in a sequence.
(A) Vigorous growth of flocs and significant reduction in BOD
(B) Activated sludge pumped into anaerobic sludge digester
(C) Effluent passed into an aeration tank and agitated mechanically
(D) Effluent transfer to settling tank followed by sedimentation of bacterial flocs
Choose the correct answer from the options given below:- CUET (UG) - 2023
- Environmental Studies
- Sewage Treatment
Questions Asked in GATE CE exam
A business person buys potatoes of two different varieties P and Q, mixes them in a certain ratio, and sells them at ₹192 per kg.
The cost of variety P is ₹800 for 5 kg.
The cost of variety Q is ₹800 for 4 kg.
If the person gets an 8% profit, what is the P : Q ratio (by weight)?- GATE CE - 2025
- Logical and Analytical Reasoning Skills
Consider a five-digit number PQRST that has distinct digits P, Q, R, S, and T, and satisfies the following conditions:
1. \( P<Q \)
2. \( S>P>T \)
3. \( R<T \)
If integers 1 through 5 are used to construct such a number, the value of P is:
- GATE CE - 2025
- Logical and Analytical Reasoning Skills
For the clock shown in the figure, if
O* = O Q S Z P R T, and
X* = X Z P W Y O Q,
then which one among the given options is most appropriate for P*?
- GATE CE - 2025
- Logical and Analytical Reasoning Skills
- “His life was divided between the books, his friends, and long walks. A solitary man, he worked at all hours without much method, and probably courted his fatal illness in this way. To his own name there is not much to show; but such was his liberality that he was continually helping others, and fruits of his erudition are widely scattered, and have gone to increase many a comparative stranger’s reputation.”
(From E.V. Lucas’s “A Funeral”)
Based only on the information provided in the above passage, which one of the following statements is true?- GATE CE - 2025
- Reading Comprehension
A bag contains Violet (V), Yellow (Y), Red (R), and Green (G) balls. On counting them, the following results are obtained:
(i) The sum of Yellow balls and twice the number of Violet balls is 50.
(ii) The sum of Violet and Green balls is 50.
(iii) The sum of Yellow and Red balls is 50.
(iv) The sum of Violet and twice the number of Red balls is 50.- GATE CE - 2025
- Logical and Analytical Reasoning Skills