The unit uses a simple structure that combines a settling section and a thickening section. As the raw liquid flows between the inclined plates, the solids move under the combined effect of the horizontal flow and their settling velocity, so they travel downward and separate on the surface of the inclined plates. When the settling velocity of the solids remains constant, a larger surface area occupied by solids in the liquid—namely a larger shadow area (projected area) beneath the inclined plates—directly increases the settling separation capacity.

Therefore, by installing multiple inclined plates in the settling section, the system shortens the settling distance and at the same time enlarges the projected area, which makes the equipment more compact. In addition, a partition plate installed below the inclined plates blocks the separated solids and stops them from floating back up, so overall performance improves further. The manufacturer also selects the inclined plate material according to the liquid properties, using options such as PP, PVC, polycarbonate film, or steel plate.