activated sludge

activated sludge defined in 1951 year

activated sludge - activated sludge;
activated sludge - Material consisting largely of bacteria and protozoa, used in, and produced by, one method of sewage disposal. Sewage is mixed with some activated sludge and agitated with air; organisms of the sludge multiply and purify the sewage, and when it is allowed to settle they separate out as a greatly increased amount of activated sludge. Part of this is added to new sewage and part disposed of.

near activated sludge in Knolik

letter "A"
start from "AC"
active centre

definition of word "activated sludge" was readed 919 times

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