Tube Settler

Tube settlers are commonly used in rectangular clarifier system to increase the settling capacity by reducing the vertical distance a suspended particle must travel. High efficiency tube settlers use a stack of parallel tubes, rectangles or flat pieces separated by a few inches (several centimeters) and sloping upwards in the direction of flow. This structure creates a large number of narrow parallel flow pathways encouraging uniform laminar flow as modeled by Stokes' law. These structures work in two ways:

Clarifier system provide a very large surface area onto which particles may fall and become stabilized.

Because flow is temporarily accelerated between the plates and then immediately slows down, Clarifier Plant helps to aggregate very fine particles that can settle as the flow exits the plates.

Application Areas

Raw Water Treatment

Sewage Treatment

Primary as well as secondary Effluent Treatment

Tube settlers capture the fine particles allowing the larger particles to travel to the bottom of the clarifier in a more uniform form. The fine particles then build up into a larger mass which then slides down the tube channels. The reduction in solids present in the outflow allows a reduction in the clarifier footprint when designing. Tubes made of PVC plastic are a minor cost in clarifier design improvements and may lead to an increase of operating rate of 2 to 4 times.