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
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).
Grupo Merker, in plots of sewage sludge
and one control (plots with sludge and without P purpureum).
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.
(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.
Soils treated with 10% sewage sludge
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.
Key Words: Sewage sludge
; Barley; Yield; Yield parameters; Heavy metal content
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).
is generated as a result of wastewater treatment processes.