The solids which settle after primary treatment of sewage are called [NCERT Pg. No. 154]
Biology · NEET · NTA Exams — Microbes in Human Welfare
The solids which settle after primary treatment of sewage are called [NCERT Pg. No. 154]
- Primary sludge
- Activated sludge
- Flocs
- Total solids
Answer
(A) Primary sludge
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