Separating device for separating at least one undesired fluid from a liquid, membrane of a separating device, filter, filter element, and liquid system

A filter for at least one multi-component liquid, the filter comprising

• a separating device for separating at least one undesired liquid fluid from a composition to be treated, the composition comprising the at least one undesired fluid and the at least one multi-component liquid,
• wherein the separating device comprises an interior region flowed through by the at least one multi-component liquid;
• wherein the separating device further comprises a plurality of hollow fiber membranes connected together in combination to form a hollow fiber membrane structure of the plurality of hollow fiber membranes in the separating device, the plurality of hollow fiber membranes disposed in the interior region and arranged to separate a first fluid region from a second fluid region;
• wherein the plurality of hollow fiber membranes comprise:
• a first permeability to the at least one undesired liquid fluid and
• a second permeability to the at least one multi-component liquid,
• wherein the first permeability is different from the second permeability, and
• wherein the plurality of hollow fiber membranes is configured to be equally permeable to all components of the at least one multi-component liquid,
• wherein the plurality of hollow fiber membranes is hydrophilic or hydrophobic.

A filter element of a filter for filtering a composition to be treated, the composition comprising at least one undesired liquid fluid and at least one multi-component liquid, the filter element configured to be arranged in the filter such that the filter element separates an inlet of the filter from an outlet of the filter, the filter element comprising:

• a filter medium configured to be flowed through by the at least one multi-component liquid and at least one undesired liquid fluid;
• at least one part of a separating device for separating the at least one undesired liquid fluid from the at least one multi-component liquid;
• wherein the at least one part of the separating device is a plurality of hollow fiber membranes connected together in combination to form a hollow fiber membrane structure,
• wherein the hollow fiber membrane structure is configured to be arranged in a region of the filter flowed through by the at least one multi-component liquid in such a way that the plurality of hollow fiber membranes separates a first fluid region from a second fluid region.

A liquid system comprising

• at least one separating device for separating at least one undesired fluid from a composition to be treated, the composition comprising the at least one undesired liquid fluid and at least one multi-component liquid,
• the at least one separating device comprises
• a region flowed through by the at least one multi-component liquid and
• a plurality of hollow fiber membranes connected in combination to form a hollow fiber membrane structure disposed in the region and arranged to separate a first fluid region from a second fluid region;
• wherein the plurality of hollow fiber membranes is hydrophilic or hydrophobic,
• wherein the plurality of hollow fiber membranes comprise a first permeability to the at least one undesired liquid fluid and a second permeability to the at least one multi-component liquid, wherein the first permeability is different from the second permeability, and wherein the plurality of hollow fiber membranes is configured to be equally permeable to all components of the at least one multi-component liquid.