Sludge digester

Sludge Digester
Tank in which complex organic substances like sewage sludges are biologically dredged. During these reactions, energy is released and much of the sewage is converted to methane, carbon dioxide, and water.
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sludge digester A reactor with extended detention and mixing during which complex organic substances like sewage sludge are biologically degraded.

See also: Conservation, Digester, Sedimentation, Climate, Release