A single-use device for filtration of a large volume of medium including a plurality of single-use filter units, at least some of which, preferably all of which, are connected to each other by rigid pipes. The filter units include at least one prefilter and at least one main filter for virus filtration which is configured as a hollow fiber capsule.

A single-use device for filtration of a large volume of medium including a plurality of single-use filter units, at least some of which, preferably all of which, are connected to each other by rigid pipes. The filter units include at least one prefilter and at least one main filter for virus filtration which is configured as a hollow fiber capsule.

An offshore water production facility to be located on a body of water includes a floating object, at least one wind turbine, a power generator that is coupled to the wind turbine and a water production system. The floating object includes a plurality of buoyancy assemblies that support at least one column on which a wind turbine is mounted. On the at least one column further a process equipment deck is mounted below an operating area of the wind turbine and above a water surface level. The water production system is arranged on the process equipment deck, and the water production system is configured for subsea well water-injection and includes an ultra-filtration unit and a membrane de-aeration unit for water to be injected.

A method for producing ultrapure water includes supplying raw water (industrial water, tap water, well water, or used ultrapure water discharged from semiconductor plants) to a pretreatment system for treating the raw water to produce water, supplying the water to a primary water purification system having a reverse osmosis membrane separation unit to produce a primarily purified water, and supplying the primarily purified water to a secondary purification system to produce ultrapure water.

A method for degassing a cross-flow diafiltration unit, a cross-flow diafiltration method and a cross-flow diafiltration unit. The degassing method includes (i) providing a cross-flow diafiltration unit having a diafiltration channel, a retentate channel and a permeate channel, a first filter material that delimits the diafiltration channel from the retentate channel, and a second filter material that delimits the retentate channel from the permeate channel; and thereafter (ii) feeding a liquid into the retentate channel so that the liquid flows in a flow direction through the retentate channel and penetrates through the first filter material into the diafiltration channel, whereby the retentate channel and the diafiltration channel are filled with and degassed by the liquid

Dialyzer systems can consolidate multiple technologies and functionalities of blood treatment systems in a significantly integrated fashion. For example, this disclosure describes dialyzer systems that include a magnetically driven and magnetically levitating pump rotor integrated into the dialyzer. Such a dialyzer can be used with treatment modules that include a magnetic field-generating pump drive unit. In some embodiments, the dialyzers include pressure sensor chambers with flexible membranes with which corresponding pressure transducers of the treatment modules can interface to detect arterial and/or venous pressures.

A single-use device for filtration of a large volume of medium comprises a plurality of single-use filter units, at least some of which, preferably all of which, are connected to each other by rigid pipes. The filter units include at least one prefilter and at least one main filter for virus filtration which is configured as a hollow fiber capsule.

A single-use device for filtration of a large volume of medium comprises a plurality of single-use filter units, at least some of which, preferably all of which, are connected to each other by rigid pipes. The filter units include at least one prefilter and at least one main filter for virus filtration which is configured as a hollow fiber capsule.

A filtration device (1) has a housing (4) and a filter module (2) with hollow fibers (32) surrounded by an outer shell (5). The hollow fiber bundle (6) is sealed to the outer shell (5) at each end by an adhesive (11) transverse to the longitudinal direction (10). Each end of the hollow fibers (32) is unclosed. An unfiltered product chamber (20) is between the outer shell (5) and a wall (19) of the filter housing (4) and a filtered product chamber (13) is inside the filter module (2). The bottom end of the filter module (2) connects with an intermediate section (3) that connects with a receptacle (17) of a bottom portion (15) of the filter housing (4). The intermediate section (3) forms a connection chamber (26) facing the hollow fiber ends (29) and radial feed channels (28) connect the connection chamber (26) with the unfiltered product chamber (20).

A water treatment system includes a first demineralizing section that separates water to be treated including Ca ions, SO.sub.4 ions, and carbonate ions into concentrated water and treated water; a crystallizing section including a first crystallizing tank 21 that crystallizes gypsum from the concentrated water and a first seed crystal supplying section 22 that supplies seed crystals of gypsum to the first crystallizing tank 21; a first pH measuring section 543 that measures the pH of the first concentrated water in the first crystallizing tank 21; and a first controlling section that reduces the amount of the seed crystals of the gypsum to be supplied when the measured pH falls within a pH range in which a scale inhibition function of the calcium scale inhibitor is reduced, and increases the amount of the seed crystals of the gypsum to be supplied when the measured pH is beyond the pH range.