Sludge is an inevitable by product of sewage treatment, and it includes pathogens, heavy
metals, organic pollutants and other toxic substances. The components of sludge are …

Biological wastewater treatment removes organic materials, nitrogen, and phosphorus from
wastewater using microbial biomass (activated sludge, biofilm, granules) which is separated …

The difficulties in sludge dewatering are associated with the high organic content and
colloidal materials in sludge solids. Chemical conditioning by flocculation improves sludge …

Animal slurry contains plant nutrients that are essential for crop production. However,
intensive livestock production may lead to a surplus of plant nutrients on farms and, as a …

An investigation was carried out for a variety of different sewage sludges in order to
establish correlations between sludge composition, structure and dewatering properties …

This study examined how the floc characteristics affect dewaterability of activated sludge.
The floc properties were characterized by morphological parameters (floc size distribution …

This work reviews two mechanical separation technologies (screw press and decanting
centrifuge) which could be used in the dairy, beef, pig and anaerobic digestion sectors in …

Large quantities of sludge is generated from different sections of a wastewater treatment
plant operation. Sludge can be a solid, semisolid or liquid muddy residual material …

Activated sludge deflocculated when it was exposed to anaerobic conditions and shear. The
extent of deflocculation, measured as turbidity, varied with length of anaerobic period and …

Many solid/liquid separation properties are dependent upon the number of fine (micron
sized) particles present in the suspension, which in turn is a consequence of the …