Activated sludge

Rarity: Common

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At a glance

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Notion

Domain

Science and technology

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What Wikipedia says

The activated sludge process is a type of biological wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa.

Excerpt from the Wikipedia article “Activated sludge”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: John Rostron, CC BY-SA 2.0, via Wikimedia Commons.