Module with membrane elements in cross-flow and in a dead-end arrangement

Membrane module for substance-specific treatment of a fluid, comprising

• a) a housing (3),
• b) an inlet arrangement (6) for feeding the fluid to be treated (14) into a distribution space (8) in the housing (6),
• c) an outlet arrangement (7) for removing the treated fluid (15) from the housing (3) via a collection space (9), and
• d) first membrane elements (1) arranged in the housing (3) and having a porous, semipermeable wall, each having one end pointing toward the distribution space (8) and the other toward the collection space (9) and a cavity (10) formed by the wall, wherein the first membrane elements (1) are embedded in a first sealing compound (4) at the end pointing toward the distribution space (8) and in a second sealing compound (5) at the end pointing toward the collection space (9), such that the ends extend through the sealing compounds (4, 5) and each of the cavities (10) of the first membrane elements (1) is open at the end pointing toward the distribution space (8) as well as at the end pointing toward the collection space (9) and opens into the distribution space (8) and collection space (9),
• characterized in that the membrane module also contains second membrane elements (2) arranged in the housing (3) and having a porous, semipermeable wall, one end pointing toward the distribution space (8) and the other toward the collection space (9), and a cavity (11) formed by the wall, wherein the second membrane elements (2), at the end pointing toward the collection space (9), are embedded, along with the first membrane elements (1), in the second sealing compound (5) such that these ends extend through the second sealing compound (5), and each of the cavities (11) of the second membrane elements (2) is open at this end and opens into the collection space, and the second membrane elements (2) are closed at the end pointing toward the distribution space (8), the first and second membrane elements (1, 2) forming a membrane-element arrangement, and an outer space (12) being formed between the sealing compounds (4, 5) that is partitioned in a fluid-tight manner from the distribution space (8) and the collection space (9) and delimited by the sealing compounds (4, 5), the inner wall of the housing (3), and the membrane elements (1, 2).