MHT CET · BIOLOGY · STD 12 - 11. Enhancement of Food Production
Identify the wrong statement regarding the process in sewage treatment.
- A Primary treatment is a physical process.
- B Secondary treatment is a biological process.
- C The BOD of effluent increases after secondary treatment.
- D The tanks used for tertiary treatment are anaerobic sludge digesters.
Answer & Solution
Correct Answer
(C) The BOD of effluent increases after secondary treatment.
Step-by-step Solution
Detailed explanation
The BOD of effluent decreases significantly after the secondary treatment.
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