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Activated sludge

Definition:

In biological wastewater treatment, activated sludge refers to either

  • the active population of micro-organisms, including bacteria and other living organisms such as fungi and protozoa, used to treat wastewater.
  • the wastewater treatment process in which these organisms are employed, or
  • the sludge resulting from that process.

Source: GreenFacts

Related words:

Micro-organism - Sewage

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