However, primary sludge from primary settling tanks does get produced and needs to be removed and treated.
2.
A larger table displayed glass bottles of effluent in various stages of detoxification, with labels reading, " Primary Sludge,"
3.
Primary sludge water content is easily reduced by thickening or removing water and contains up to 7 % solids.
4.
The total sludge production consists of the sum of primary sludge from the primary sedimentation tanks as well as waste activated sludge from the bioreactors.
5.
These wastes can include mixed sludge, mineral slurry, dust sediment, selected coal washing mud, biological sludge, primary sludge, and straw, wood or waste paper pulp.
6.
In addition, about 110 170 kg / ML of primary sludge is produced in the primary sedimentation tanks which most-but not all-of the activated sludge process configurations use.
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