Definition of activated sludge in English:

activated sludge

Line breaks: ac¦ti|vated sludge

noun

[mass noun]
  • Aerated sewage containing aerobic microorganisms which help to break it down.
    More example sentences
    • Waste water is purified in that an aerated mixture of waste water with activated sludge is degassed before being discharged into the secondary settling basin.
    • Enzymatic reduction of Cr by hexavalent Cr-tolerant Pseudomonas ambigua G - 1 isolated from activated sludge has been reported.
    • The most common is activated sludge, a process in which microbes, also known as biomass, are allowed to feed on organic matter in the wastewater.

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
noun
elaborate ornamentation of a vocal melody