pindfiltratsioon
Pindfiltratsioon, or surface filtration, is a filtration process in which suspended solids are retained near the surface of a porous filter medium, forming a thin solid layer called a cake that contributes to further filtration. The principal mechanism relies on sieving and interception at the surface, with small amounts of particles penetrating slightly depending on the medium.
During operation, feed flows toward the filter medium under pressure or gravity. Particles larger than the
Materials used include screen, fabric meshes, filter papers, and porous plates, as well as macro- and microfiltration
Common applications include drinking water treatment, clarification of beverages and juices, pretreatment in chemical processing, sludge
Advantages include relatively low equipment cost, the ability to capture relatively large particles, and straightforward operation.