Roto-Sieve RST

ROTO-SIEVE ROTARY SLUDGE THICKENERS

The Roto-Sieve rotary sludge thickener consists of a rotating perforated drum with an internally mounted transport screw which transports the separated solids out of the drum.

The drum rotates on trunnion wheels and is operated by a cog gear motor. The incoming water is fed into the drum by means of an inlet pipe which distributes the water over a large area of the drums inside.

The rotary sludge thickeners are completely encased with detachable splash guards and may be equipped with a ventilation connection to establish a more hygienic working environment in the room where the screens are located.

Larger Roto-Sieve rotary sludge thickeners are available with an overflow system.

By adding polymer to bio or mixed sludge, a Roto-Sieve rotary sludge thickener can dewater the sludge from 1-2% DS to 4-8% DS. This will save money on less transports or by using a lower capacity belt press.

All models are mainly of stainless steel and have the following options:

optional hole perforation from 0.6mm to 2.5mm
wedgewire slotted drums from 0.5mm to 6.0mm
varying types of inlet pipes for water or sludge
with or without overflow system
varying speeds
variable inclines available
low weight and small footprint
hygienically encased with optional ventilation connection

Roto-Sieve Model 11 shown above

Roto-Sieve rotary sludge thickeners come in five sizes for different flows, thus ensuring that there will always be one or more units to fit your application.

Roto-Sieve Model 60 shown above

Roto-Sieve Rotary Sludge Thickener advantages
	Low cost for high efficiency sludge thickening
	Modular package systems with sludge thickener, polymer feed and cake conveyor
	Thicken secondary sludge to between 4 to 6% with 90% capture
	Flow rates from 50 to 500 gpm secondary sludge
	Fully automated, minimal operator attendance
	Low maintenance
	304/316 stainless steel construction
	More than 500 units in operation on sludge thickening