NEET · BiologyMedium
The primary treatment of sewage involves which of the following processes?
- A.Biological degradation by aerobic bacteria
- B.Physical removal of particles through filtration and sedimentation
- C.Anaerobic digestion of sludge
- D.Chemical disinfection using chlorine
Show correct answer & step-by-step solution
Correct answer: B — Physical removal of particles through filtration and sedimentation
Solution
- Sewage treatment is divided into primary, secondary, and tertiary stages.
- Primary treatment focuses on the physical removal of large and small particles.
- Filtration removes floating debris and sedimentation allows grit to settle.
- Hence the answer is (B).
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