Computer · Environmental Engineering
The following units are included in a conventional sewage treatment plant: 1. Screening 2. Grit removal 3. Secondary sedimentation 4. Aeration 5. Primary sedimentation The correct sequence of these units in the treatment process is:
- 12, 1, 4, 3, 5
- 22, 1, 4, 5, 3
- 31, 2, 5, 4, 3✓
- 41, 2, 3, 4, 5
Correct answer
1, 2, 5, 4, 3
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