Product/Service

IFT - Sludge Thickener

Source: IPEC

ift

Cylindrical drums with progressive series of screen elements mounted horizontally on four shaft-mounted wheels.  

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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.

Method of Operation
Sludge is normally pumped to the thickener, while polymer is injected prior to sludge entering a tank. The tank has a vertically mounted mechanical mixer, the polymer is gently agitated for up to 1 minute to aggregate the fine solids into tightly held floc. The conditioned sludge overflows into the distribution headbox and is fed gently on the inside surface of the screen cylinder.

The floc are retained on the screen surface as the liquid flows rapidly through the screen opening. The liquid filtrate is collected and directed to an outlet on the bottom of the discharge pan, the solids are transported by flights along the cylinder and discharged out the open end and exiting through the discharge chute. The thickened sludge attains high levels of consistency as the rotation induces the free liquid to drain away.

A shower bar along the top section applies an intermittent cleaning shower to keep screen openings clean.

Features

  • 304 stainless steel construction
  • removable top & side enclosure panels
  • drainage (filtrate) pan
  • solids chute
  • easily replaceable, mesh panels
  • TEFC motor and geardrive
  • corrosion resistant roller chain
  • UHMW polyurethane wheels c/w internal bearings
  • external spray bar
  • polymer mixing tank c/w agitator
  • frame supports screen and tank

Options

  • 316 stainless steel construction
  • full support base
  • internal spray bar
  • wedgewire or mesh panels
  • control panel
  • VFD

IPEC IFT Internally-Fed Rotary Drum Sludge Thickeners

Model Screen Diameter Screen Length Capacity Dry Solids
  inches mm inches mm lbs/hr kg/hr
IFT 75 - 3648 36 914 48 1,219 270 122
IFT 100 - 3672 36 914 72 1,905 430 195
IFT 150 - 3696 36 914 96 2,438 630 285
IFT 200 - 4872 48 1,219 72 1,905 700 317
IFT 250 - 4896 48 1,219 96 2,438 930 421
IFT 300 - 48120 48 1,219 120 3,048 1,150 521
IFT 350 - 6096 60 1,524 96 2,438 1,300 590
IFT 450 - 60120 60 1,524 120 3,048 1,600 725
IFT 500 - 60144 60 1,524 144 3,658 1,900 864

This chart is only to be used as a guide. For specific sizing enquiries, please contact IPEC.

 

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