Membrane module for substance-specific treatment of fluids, such that the
module has first and second membrane elements arranged with one end
pointing toward a distribution space and the other end pointing toward a
collection space. Each of the membrane elements have a cavity formed by a
membrane wall. The first membrane elements have their ends embedded in
sealing compounds such that their cavities open into the distribution
space and collection space. The second membrane elements are also embedded
in the sealing compound at the end pointing toward the collection space.
The cavities of the second membrane elements open into the collection
space, but are closed at the end pointing toward the distribution space.
The fluid to be treated flows through the first membrane elements in
cross-flow mode. In the process, part of the fluid passes through the
membrane wall as a permeate, which then passes through the second membrane
elements in dead-end mode. The retentate leaving the first membrane
elements and the permeate conducted through the second membrane elements
are combined within the membrane module and are removed from it as treated
fluid. The substance-specific treatment is carried out on the permeate.
