Sedimentation is an operation of solid-liquid separation which separates solid particles from the fluid by density differences.
In cases of particles with similar density to the liquid (in this case water), the flocs require exceptionally high retention time.
One solution to increase the settling efficiency is to increase the settling surface. For very low density flocs large surfaces are required, due to this the settling becomes a process that occupies a large space and is expensive to install.
With the usage of lamellas in the settler (lamellar settling) the settling surface is increased without altering the dimensions of the tank, which means and a considerable increase in the efficiency of the installation.
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