Question

The solids that separate out from sewage after the action of bacteria is referred as​

Answer 1

Answer:

"sewage sludge "is the name

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Answer 2

Answer:

When fresh sewage or wastewater enters a primary settling tank, approximately 50% of the suspended solid matter will settle out in an hour and a half. This collection of solids is known as raw sludge or primary solids and is said to be "fresh" before anaerobic processes become active. The sludge will become putrescent in a short time once anaerobic bacteria take over, and must be removed from the sedimentation tank before this happens.

Explanation:

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