||IFT - Internally-fed - rotary thickener
Sludge thickening, municpal primary
IFT Series of Internally-fed Rotary Drum Sludge
Thickeners have cylindrical drums with progressive
series of screen elements that are mounted
horizontally on four shaft-mounted wheels and
supported in a structural housing. The smallest
openings are used to screen the influent sludge,
followed by coarser elements as the sludge thickens.
The screening element is either woven mesh or
wedgewire. The screens are used to remove free
liquids from a variety of sludges, including those
with appreciable amounts of microbial particles.
Sludge containing 0.5%-3% solids can be thickened
to 5%-15%, depending on the type of sludge.