Lamella Clarifiers in Laval, Quebec

A lamella clarifier does what a conventional circular clarifier does, in about a tenth of the floor space. The trick is geometry. Instead of one large settling surface, the vessel stacks dozens of inclined plates, and each plate acts as its own shallow settling zone. Projected settling area multiplies while the tank stays compact, which is how a unit the size of a shipping container replaces a settling basin, cutting footprint by up to 90 percent.

How the plate pack works

Solids-laden water enters below the plate pack and rises between the plates. Particles settle onto the plate surfaces within a short vertical distance, slide down the incline into a collection hopper, and clarified water exits at the top through distribution orifices that keep flow even across the pack. There are no moving parts in the settling zone, so wear items are few and maintenance stays on the pumps and dosing systems where it belongs. The integrated sludge thickening hopper concentrates the underflow before it goes to dewatering, which shrinks the load on whatever press or centrifuge follows.

Where lamella clarifiers dominate

The applications where lamella clarifiers dominate are the ones where solids are the whole problem: mining and mineral processing water, construction and groundwater dewatering, metal finishing effluent after chemical precipitation, and industrial process water carrying grit or floc. Where the raw stream will not settle on its own, we add integrated flash-mix and flocculation stages ahead of the plate pack, so coagulant, polymer and settling happen in one skid. Vessel construction is 304 or 316 stainless or coated carbon steel, matched to the chemistry of your stream rather than defaulted.

Sizing is a solids problem

Sizing a lamella clarifier is a solids problem, not a flow problem. Two streams at the same flow rate can need very different plate areas depending on particle size, floc strength and solids loading, which is why we ask for a lab analysis or at least a jar test before quoting, and why the 110 monthly Canadian searches for this equipment so often come from engineers replacing an undersized unit bought on flow rate alone. Send your flow, your solids data and your discharge destination, and we return a sized configuration, budget price and delivery timeline for your site, anywhere in Canada. Every proposal is reviewed by a process engineer first, and pilot units can be arranged where treatability is genuinely uncertain. Plate packs are removable for inspection and washing without dismantling the vessel, and replacement packs remain available for the life of the unit, so recovery from an upset upstream is a cleaning day rather than a capital request.