The present disclosure is directed to ion-exchange systems and devices that can monitor key parameters related to the performance of the ion-exchange device. Specifically, the ion-exchange systems and devices disclosed herein can provide real time voltage drop across groups of membrane pairs using diagnostic spacer borders between the pairs. In addition, the ion-exchange systems and devices disclosed herein can monitor the compression force applied by the compression plates holding the ion-exchange systems and devices together.

A filter medium of the present invention includes a porous carbon material having a value of a specific surface area by a nitrogen BET method of 1×10.sup.2 m.sup.2/g or more, a volume of fine pores by a BJH method of 0.3 cm.sup.3/g or more, and a particle size of 75 μm or more, alternatively, a porous carbon material having a value of a specific surface area by a nitrogen BET method of 1×10.sup.2 m.sup.2/g or more, a total of volumes of fine pores having a diameter of from 1×10.sup.−9 m to 5×10.sup.−7 m, obtained by a non-localized density functional theory method, of 1.0 cm.sup.3/g or more, and a particle size of 75 μm or more.

A filter module (10) has a housing (12) which is subdivided by a membrane filter (14) into an inlet chamber (16), which is connected to an inlet connecting piece (22) arranged rigidly on the housing (12), and an outlet chamber (18), which has a filtrate outlet (20). The inlet connecting piece has two connectors, specifically a first connector (26) and a second connector (28), which connect selectively and fluidically to the inlet chamber with a 3-way valve (24) integrated into the inlet connecting piece. The valve has a first entry, which is connected to the first connector, a second entry, which is connected to the second connector, and an exit, which is connected to the inlet chamber. The first connector is configured as an adapter for outwardly sealed coupling of a culture medium bottle (30), which coupling permits a gravity-driven exchange of liquid with the first entry of the valve.

A docking station at a service site fluidly connectable to a mobile water treatment system having one or more deionization units comprises a fluid inlet configured to receive processed water from the mobile water treatment system and a fluid outlet configured to deliver the processed water to a point of use. The docking station also comprises a monitoring system configured to monitor at least one water quality parameter of the processed water, and a processor configured to receive the monitored water quality parameter and communicate with a central monitoring system disposed remotely from the station regarding the monitored water quality parameter.

A method for modifying the flow capabilities of an existing tangential flow filtration (TFF) system is contemplated in which the processing capabilities of the existing static TFF system may be increased without requiring the addition of additional systems running in parallel. This may be achieved via adjusting or replacing certain of the components of the TFF skid to accommodate a tubing set having a larger (or smaller) internal diameter than the existing tubing set or the tubing set for which the TFF system was originally manufactured. In this fashion, it may be seen that an existing skid may have its flow capabilities dramatically increased. It is further contemplated that a retrofit kit for an existing TFF system for use according to the described method may be provided.

The disclosed technology includes a water filtration unit. A disclosed water filtration unit includes a filtration unit housing defining a filtration unit cavity; an inlet coupled to the filtration unit housing; a pump positioned at least partially within the filtration unit cavity and including a pump inlet and pump outlet, the pump inlet coupled to the inlet; a filter housing positioned at least partially within the filtration unit cavity and including a filter inlet and filter outlet, the filter inlet coupled to the pump outlet and filter outlet coupled to a water dispenser; and a power source in communication with the pump to power the pump to push water through the filter housing when the water filtration unit is coupled to a water source.

This publication relates to a method and a system for producing freshwater through a reverse osmosis process in a submerged membrane system requiring a differential pressure over the membrane system. The differential pressure is provided by introducing gas bubbles in the riser device (2) downstream the outlet (7) for fresh water in the riser device (2). The system comprises at least one submerged, reverse osmosis unit (1), with an inlet (4) for water and an outlet (7) for fresh water, a riser device (2) extending from the outlet (7) of the submerged membrane system to at, above or below sea level and a system for providing a low pressure side for the reverse osmosis process.

A water filter cartridge includes a sediment filter, a carbon filter, and a core having a tubular body with openings that allow water to flow through the core. The core defines an open central area, and the core supports the sediment filter and the carbon filter. A nanofiltration unit is arranged within the open central area of the core. The nanofiltration unit includes a tubular filter element defining a central volume, and a plurality of filaments arranged within the central volume.

A filtration module for filtering a process medium in a bioprocess including a process flow path for a process medium, a filter membrane coupled to the process flow path, and a sampling membrane coupled both to the process flow path and to a sampling flow path for extracting a sample from the process medium. The sampling flow path guides the extracted sample to a sampling outlet of the filtration module or to an analyzer integrated into the filtration module. A filtration assembly including the filtration module and an analyzer coupled to the sampling outlet of the filtration module. A method of sampling during a bioprocess including providing such a filtration module, urging a process medium through the process flow path, filtering the process medium by using the filter membrane, extracting a sample from the process medium by using the sampling membrane, and guiding the extracted sample to a sampling outlet.

The invention relates to a respiratory air purifier device. In order to provide an improved respiratory air purifier device which is able effectively to retain viruses, a respiratory air purifier device 101 is proposed for retention of viruses from respiratory air flowing through the device 101, the latter having an interface 110 designed such that it can be placed by a wearer sealingly onto at least one respiratory opening, a hollow-fibre dialyser 120 as a filter, and a connection piece 130 between the interface 110 and the dialyser 120, wherein interface 110, dialyser 120 and connection piece 130 are configured in such a way as to form an airtight fluid channel which fluidically connects the interface to either only the exterior of the hollow fibres X or only the interior of the hollow fibres I of the hollow-fibre dialyser 120, and wherein the purifier device 101 is designed in such a way that, in at least one flow direction E, A, each flow path pE, pA that runs completely through the purifier device extends through the pores of the hollow-fibre membranes, i.e. transversely with respect to the hollow-fibre membrane, of the hollow-fibre dialyser 120.