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Activated sludge

Activated 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.

Note: This article excerpts material from the Wikipedia article "Activated sludge", which is released under the GNU Free Documentation License.

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last updated on 2015-03-01 at 9:48 am EST

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