Activated sludge process


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Terms & Synonyms

Official WHO Definition

In an activated sludge process settled wastewater is contacted with recirculated activated sludge in an aerated chamber. In this way a substantial amount of micro-organisms is kept in the treatment process to consume the organic materials in the wastewater. Excess sludge is removed after sedimenting the aerated mixture (UNEP 2000).

Other Definitions


Interpretations and Explanations


UNEP (2000) International source book on environmentally sound technologies for wastewater and stormwater management

WHO Lexicon page (translations and examples)

See also

External Resources


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