Biology · Sewage Treatment
In sewage treatment, bacterial flocs are allowed to sediment in a settling tank. This sediment is called:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Secondary sludge
- 2Primary sludge
- 3Activated sludge✓
- 4Inactivated sludge
Correct answer
Activated sludge
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