Dewatering Services

Consolidated Giroux Environment Inc’s dewatering services are comprised of a fleet of Decanter Centrifuges. The decanter centrifuge is the only sedimentation centrifuge designed from the start to handle significant solids concentrations in the feed suspension. These centrifuges allow us to efficiently separate suspended solids from liquids so that clean water is returned and the solids may be transported away.

“The decanter operates mainly by sedimentation; a process causing the separation of suspended solids by virtue of their higher density than the liquid in which they are suspended. If the density difference is high then gravity may provide sufficient driving force for the separation to occur in a reasonable time. If the density difference is small, or the particle size is very small, then gravity separation would take too long and the separation force must be increased by the imposition of centrifugal forces many times that of gravity alone.”
(http://www.lenntech.com/Centrifugation.htm#Decanter)

The benefits of Decanter Centrifuges, when compared to other designs, is that they can produce drier solids, they have higher liquid capacity and can handle much higher slurry concentrations, they can handle much higher solids concentrations, and they can continuously operate.

In short, they are designed for a wide range of potential uses, have the ability to accept a wide range of feed concentrations, and are available in a wide range of feed capacities.

We operate 5 high production Decanter Centrifuge units. Of those 5 units, 4 of them are paired into two separate dewatering plants and one is trailer-mounted so that the 1 trailer contains an entire dewatering plant. All of our dewatering plants are designed to be readily and easily transported over roadway systems. This allows for quick mobilization and demobilization, and fast response time to emergency situations.

All dewatering work begins in the test lab where our technicians determine the physical and chemical properties of the matter to be dewatered. As well, they determine the most efficient mix of additives to apply to the sludge, aiming at maximizing production and cake dryness.