A membrane humidifier for a fuel cell, of the present invention, comprises: a middle case in which a plurality of hollow fiber membranes are accommodated; a cap case coupled to the middle case; potting parts formed at the ends of the plurality of hollow fiber membranes; an assembly member disposed between the cap case and the end of the middle case so as to provide air tight coupling therebetween; and a protrusion part extending toward the edges of the potting parts from the inside of the cap case so as to provide air tight coupling between the cap case and the potting parts.

This application relates to a system of treating wastewater wherein an oxygen infusion system is used to supersaturate wastewater before aerobic biological processes, wherein oxygen is transferred to the wastewater free of oxygen bubbles and achieves a reduction in power demand for the aeration process of wastewater.

A membrane module comprising a hollow fiber membrane bundle with a longitudinal extent, a membrane bundle cross section and a first and a second bundle end, the bundle comprising a multitude of hollow fiber membranes extending between the first and the second bundle end, and also comprising, within the membrane bundle cross section, a proportion of threads which are arranged between the hollow fiber membranes and which keep the hollow fiber membranes apart. The arrangement of the threads between the hollow fiber membranes is such that at the first bundle end and/or at the second bundle end the hollow fiber membranes protrude beyond at least some of the threads, such that the hollow fiber membrane bundle has a smaller proportion of threads in a first and/or second end region, extending from the first and/or the second bundle end, than in a bundle region, located between the first and the second bundle end, which has a maximal proportion of threads, the length of the first end region and/or the length of the second end region being 1% to 45% of the bundle length.

A membrane module comprising a hollow fiber membrane bundle with a longitudinal extent, a membrane bundle cross section and a first and a second bundle end, the bundle comprising a multitude of hollow fiber membranes extending between the first and the second bundle end, and also comprising, within the membrane bundle cross section, a proportion of threads which are arranged between the hollow fiber membranes and which keep the hollow fiber membranes apart. The arrangement of the threads between the hollow fiber membranes is such that at the first bundle end and/or at the second bundle end the hollow fiber membranes protrude beyond at least some of the threads, such that the hollow fiber membrane bundle has a smaller proportion of threads in a first and/or second end region, extending from the first and/or the second bundle end, than in a bundle region, located between the first and the second bundle end, which has a maximal proportion of threads, the length of the first end region and/or the length of the second end region being 1% to 45% of the bundle length.

Vessel configured to facilitate concentration of a product in a solution. The vessel may include outlet ports to deliver the solution to a processing system (such as a filtration system), and inlet ports. The inlet ports may be at progressively lower levels for return of fluid thereto reduced in volume as a result of filtration thereof. A smaller volume sump may be provided below a main tank of the vessel to facilitate concentration of the solution. The sump may include ridges facilitating collection of the product of interest from the solution, and/or reinforcing the sump walls, and optionally forming a vortex breaker. A spray ball may be provided to spray materials, such as buffer solution, into the vessel. The spray ball may direct materials to facilitate retrieval of product from the vessel. One or more components of the vessel may be advantageously formed of disposable material for single use thereof.

A CMS membrane module includes plurality of hollow fiber CMS membranes that are enclosed within an open cylindrical shell whose ends are embedded in tubesheets. The shell is concentrically disposed within an open cylindrical pressure vessel whose open ends are covered by and secured by end caps. The shell includes a feed fluid inlet formed therein between the tubesheets and a retentate outlet in between one of the tubesheets and an adjacent end cap. A retentate seal is formed between the shell and the pressure vessel at a position between the tubesheets. A permeate seal is formed between the pressure vessel and the tubesheet that is adjacent a permeate port of the module. A structure made up of the CMS membranes, shell, tubesheets, and seals is slidable within the pressure vessel and not fixed in place in relation to the pressure vessel and end caps.

A CMS membrane module includes plurality of hollow fiber CMS membranes that are enclosed within an open cylindrical shell whose ends are embedded in tubesheets. The shell is concentrically disposed within an open cylindrical pressure vessel whose open ends are covered by and secured by end caps. The shell includes a feed fluid inlet formed therein between the tubesheets and a retentate outlet in between one of the tubesheets and an adjacent end cap. A retentate seal is formed between the shell and the pressure vessel at a position between the tubesheets. A permeate seal is formed between the pressure vessel and the tubesheet that is adjacent a permeate port of the module. A structure made up of the CMS membranes, shell, tubesheets, and seals is slidable within the pressure vessel and not fixed in place in relation to the pressure vessel and end caps.

The disclosure relates to a container for filtering a suspension which comprises a lid and a vessel. The container comprises a filter that divides an interior space of the container into a first compartment and a second compartment. The lid comprises a first access and a second access. The first access is connected to the first compartment, and the second access is connected to the second compartment.

The disclosure relates to a container for filtering a suspension which comprises a lid and a vessel. The container comprises a filter that divides an interior space of the container into a first compartment and a second compartment. The lid comprises a first access and a second access. The first access is connected to the first compartment, and the second access is connected to the second compartment.

The invention relates to a method of determining a permeation property of hollow-fibre membranes wherein the permeation property of the hollow-fibre membrane is determined on a hollow-fibre membrane bundle which has been introduced into a housing and has terminally open hollow-fibre membranes at a first end of the hollow-fibre membrane bundle and terminally closed hollow-fibre membranes at a second end of the hollow-fibre membrane bundle. The invention more particularly relates to a method of determining the ultrafiltration rate and/or the ultrafiltration coefficient of hollow-fibre membranes.