Stack assembly comprising a hollow external housing having a central axis, the external housing extending from a first end to a second end and enclosing a housing space, and a membrane stack comprising a plurality of membranes, wherein the membrane slack is positionable inside the external housing and a number of side plates extending substantially parallel to the central axis, wherein each side plate of the number of side plates is associated with a side of the membrane stack and extending along the associated side and a number of sealing connectors that extend substantially parallel to the central axis and adjacent with an inner surface of the external housing, wherein each sealing connector of the number of sealing connectors is configured to connect two side plates to each other, wherein the sealing connectors and the side plates cooperate to form an enclosing structure, and wherein, in use of the stack assembly, the enclosing structure encloses the membrane stack. The invention also relates to a method for assembling a stack assembly and a method for generating energy or performing an electrodialysis process.

An object of the present invention is to provide a filtration apparatus capable of achieving space-saving of the entire apparatus. A filtration apparatus according to the present invention includes a plurality of filtration modules that each include a plurality of hollow fiber membranes that are arranged adjacent to each other so as to extend in an up-down direction, a washing module configured to supply air bubbles from below the plurality of filtration modules, and a frame that supports the plurality of filtration modules. The washing module includes a plurality of aeration tubes each having a plurality of aeration holes. At least a portion of the frame is a hollow tube through which a gas is supplied to the plurality of aeration tubes.

A sheet-shaped hollow fiber membrane module includes a casing having a flat shape, the casing including a supply port and a discharge port, and a plurality of hollow fiber membranes accommodated inside the casing. The casing includes a plurality of the supply ports on one main surface of the casing and a plurality of the discharge ports on the other main surface of the casing, at least one of the plurality of the supply ports is closable, and at least one of the plurality of the discharge ports is closable. Each of the plurality of hollow fiber membranes includes a first opening at one end of the hollow fiber membrane and a second opening at the other end of the hollow fiber membrane, and the first opening and the second opening communicate with an outside of the casing and do not communicate with an inside of the casing.

Provided are a plate-type filter module for water treatment and a filter assembly for water treatment comprising the same. The plate-type filter module for water treatment according to one embodiment of the present invention comprises: a plurality of filter units having a predetermined area and formed in a plate shape; a block frame to which the plurality of filter units is engaged so that the filter units are kept parallel to each other; and a collecting/receiving tube fixed on one side of the block frame and including a plurality of first fittings respectively connected to the plurality of the filter units to allow filtered water produced in the filter units to be introduced thereinto and at least one second fitting for discharging the filtered water introduced through the plurality of first fittings to the outside.

The disclosure relates to water treatment systems that may be used to remove impurities from water, particularly systems that inserted at the point of entry of a water supply into a building.

A desalination system that is deployable in a body of water having a surface and a seafloor and which includes a vessel structure that is capable of travel in water, a reverse osmosis system disposed within an internal space of the vessel structure and a tank connected to the reverse osmosis system, the tank configured to receive filtered water from the reverse osmosis system. A positioning system is provided for controlling the travel of the vessel structure, and a ballast system is configured to control the buoyancy of the vessel structure. A controller is operably associated with the positioning system and the ballast system to control the position of the vessel below the surface of the body of water.

Hydrogen purification devices and their components are disclosed. In some embodiments, the devices may include at least one foil-microscreen assembly disposed between and secured to first and second end frames. The at least one foil-microscreen assembly may include at least one hydrogen-selective membrane and at least one microscreen structure including a non-porous planar sheet having a plurality of apertures forming a plurality of fluid passages. The planar sheet may include generally opposed planar surfaces configured to provide support to the permeate side. The plurality of fluid passages may extend between the opposed surfaces. The at least one hydrogen-selective membrane may be metallurgically bonded to the at least one microscreen structure. In some embodiments, the devices may include a permeate frame having at least one membrane support structure that spans at least a substantial portion of an open region and that is configured to support at least one foil-microscreen assembly.

A method of forming a frame around a membrane stack for a laterally-fed membrane chromatography device is provided. The method includes placing a membrane stack having one or more membrane layers on a bottom surface of body of a master mold, the body having opposed side walls and opposed end walls, the opposed side walls spaced apart by a distance greater than a length of the membrane stack, the opposed end walls spaced apart by a distance greater than a width of the membrane stack; placing a cap on the body of the master mold to enclose the membrane stack in the master mold, the cap having at least one opening for injecting a material into a space defined by the end walls of the master mold, the side walls of the master mold, end walls of the membrane stack side walls of the membrane stack, the bottom surface of the body and an inner surface of the cap; injecting the material into the space around the membrane stack; and curing the material to form a frame around the membrane stack.

A desalination system that is deployable in a body of water having a surface and a seafloor and which includes a vessel structure that is capable of travel in water, a reverse osmosis system disposed within an internal space of the vessel structure and a tank connected to the reverse osmosis system, the tank configured to receive filtered water from the reverse osmosis system. A positioning system is provided for controlling the travel of the vessel structure, and a ballast system is configured to control the buoyancy of the vessel structure. A controller is operably associated with the positioning system and the ballast system to control the position of the vessel below the surface of the body of water.

A filtration filter comprises a porous film including a central film portion having a plurality of through holes and an outer edge portion adjacent to the central film portion. The porous film portion lies in a flat plane in the absence of a force being applied to the central portion of the central film portion. A frame holds the outer edge portion of the porous film in such a manner that when a force is applied to the central film portion in a first direction, the central film portion moves in the first direction relative to the flat plane and the outer edge portion moves in a second direction, opposite to the first direction, relative to the flat plane. In this way stresses applied to the porous film during a filtering operation are reduced.