permeaatkanalen

Permeaatkanalen, a term used in Dutch-language membrane technology, refers to the channels that carry the permeate—the liquid that has passed through a semi-permeable membrane—away from the membrane surface. In many membrane modules, including spiral-wound, hollow-fiber, and plate-and-frame designs, a permeate channel forms part of the permeate collection system and directs flow to the permeate outlet.

Function and role: The permeate channel provides a relatively low-resistance path for permeate, helping to separate it from the feed side and to drain it efficiently from the module. Its geometry and integration with the membrane support influence permeate flux, pressure on the permeate side, and effects such as concentration polarization and fouling on the feed side.

Design considerations: Permeate channels are typically designed to minimize flow resistance while maintaining structural integrity and chemical compatibility with cleaning regimes. Channel width and surface finish affect drainage, cleaning, and overall module performance. In high-pressure applications like reverse osmosis, the permeate side operates at substantially lower pressure than the feed side, reducing structural stress.

Applications and terminology: Permeate channels are found in desalination, municipal and industrial water treatment, food and pharmaceutical filtration. The term permeaatkanalen is primarily used in Dutch-language literature; in English texts the term permeate channel or permeate flow channel is common.