sewage sludge


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sewage sludge

[′sü·ij ‚sləj]
(civil engineering)
A semiliquid waste with a solid concentration in excess of 2500 parts per million, obtained from the purification of municipal sewage. Also known as sludge.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The surplus sewage sludge dewatered with centrifuges, ash-tree bark, oak sawdust, aspen chips and minor branches were used for researching the emissions of gaseous pollutants (C[H.sub.4], N[H.sub.3], [H.sub.2]S, VOC) from sewage sludge composting.
The sewage sludge (SS) from a domestic wastewater treatment plant near the city of Santiago was used.
Zinc and Cu gain more attention because of their high concentrations in sewage sludge (7012 and 732 mg kg-1 for Zn and Cu respectively).
Main problems in sewage sludge usage would be the presence and accumulation of heavy metals in soils, affecting negatively plant growth and causing biosecurity problems.
Sewage sludge (Class B) was collected from a drying bed, at a municipal wastewater treatment facility (WWTF), located in Tallahassee, Florida, U.S.A, where wastewater is treated through an activated sludge treatment process.
Therefore, 30,75,150, and 3001 [ha.sup.-1] (metric tons per hectare) (about 0.5%, 0.9%, 1.6%, and 2.9% organic carbon of soil weight in the 0-20 cm soil layer, resp.) sewage sludge amendment (SSA) rates on a dried weight basis by one-time application were used.
During cofiring dried sewage sludge with coal and PE, the vertical temperature profiles in the furnace were adjusted through regulating the depth of a water tube inserted into the furnace from the top of the furnace.
NORTHUMBRIAN Water claims "there is no risk to health" from using the sewage sludge currently piled outside my house ("A whole heap of trouble", The Journal, March 14).