Question

Arrange the steps in the sequence in which it happens in the sewage treatment plant. A. Grit and stone removal B. Secondary settlement tank C. Raw sewage D. Primary settlement tank E. Aeration tank. Choose the correct answer from the options given below:

• A. C, E, D, B, A
• B. C, A, D, E, B
• C. C, A, B, D, E
• D. C, E, A, B, D

Hint:

Remember that raw sewage is treated in a sequence involving grit removal, primary settling, aeration, and secondary settling.

Answer 1

The Correct Option is B

Step 1: Concept
Sequence of processes in sewage treatment

Step 2: Meaning
Understanding the correct order of operations in a sewage treatment plant is crucial for effective wastewater management.

Step 3: Analysis
The given sequence should follow the typical process flow in a sewage treatment plant. The options provided can be evaluated based on their logical sequence and industry standards.

Step 4: Conclusion
Option B (C, A, D, E, B) correctly represents the order of operations as C (raw sewage intake), A (grit and stone removal), D (primary settlement tank), E (aeration tank), and B (secondary settlement tank). Final Answer: (B)