Environment & Ecology · Waste Management & Sewage Treatment
During sewage treatment, primary sludge produced is useful for _____.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Production of biogas and composting✓
- 2Manufacturing paper in industry
- 3Production of synthetic chemical pesticides
- 4Manufacturing heavy industrial machinery
Correct answer
Production of biogas and composting
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