Question

The solids that separate from sewage after the action of bacteria are referred to as _________ sludge.

Answer 1

Sludge:

1. Sludge is the human waste that remains in the wastewater after the sewage treatment.
2. The mechanical wastewater treatment method produces primary sludge. It occurs after the grit chamber and is made up of unsolved wastewater contaminations.
3. Primary sludge is the sludge that accumulates at the bottom of the primary sedimentation basin.

Final answer: The solids that separate from sewage after the action of bacteria are referred to as primary sludge.