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ShareActivated sludge is a process in sewage treatment in which air or oxygen is forced into sewage liquor to develop a biological floc which reduces the organic content of the sewage..
For more information about the topic Activated sludge, read the full article at Wikipedia.org, or see the following related articles:
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Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Activated sludge at Wikipedia.org. See the Wikipedia copyright page for more details.
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