Centrifuges are one of the most efficient dewatering technologies available. Acorn Recycling provide turnkey rental of these systems. A number of sized centrifuges are available with dewatering capacities ranging from 12 to 40 cubic metres per hour. The sludge produced with have a dry solids content ranging from 18-25 percent.
The Westfalia Centrifuge is an advanced dewatering system that can process up to 30 cubic meters per hour of liquid sludge. It can produce a cake of greater than 21% DS which significantly reduces the volume of water for transport and produces a centrate that is clear enough to discharge or return to the headworks or sludge tank. Centrifuge operating at a water treatment plant
The unit uses a powder based or emulsion liquid polymer dosing system. Emulsions are usually easier to use but powders can be more cost effective.
Integrated powder/liquid dosing system.
The working centrifuge, seen below receives the feed via a pump. The green hose on the right supplies the liquid polymer and the silver pipe running from the floor and via a magflow meter is the feed line.
The liquid passes into a separation chamber where centrifugal forces separate the solid from the liquid.The solid is flung on to the bowl wall and are fed through the scroll into a discharge and onto a conveyor. The liquid passes through the pressurised discharge.
Centrifuge Seperator Diagram
1 Primary gear
4 Scroll bearing
5 Regulating ring
6 Bowl bearings
7 Discharge of the clarified liquids under pressure
9 Feed tube
10 Separation chamber
13 Solids discharge
14 Bowl drive
15 Scroll drive
16 Primary motor
17 Centripetal pump
18 Gravity discharge of the clarified heavy phase
19 Regulating tubes