The present invention relates to the production of electrolyzed aqueous solutions in an electrochemical cell. More particularly, the invention relates to an asymmetric electrochemical cell device for producing electrolyzed water or aqueous solution, while controlling the pH of the solution. The invention further relates to methods of operating said device and to the use thereof for microbial disinfection and/or pesticide removal.

A novel fibrous membrane comprises at least one substrate layer comprising at least 80% by weight of microfibers that carry positively charged and/or negatively charged functional groups, and at least one layer of filtration material attached to the substrate layer, wherein the layer of filtration material comprises at least 80% by weight of nanofibers that carry negatively charged and/or positively charged functional groups. The fibrous membrane is able to remove or reduce the concentration of bacteria, viruses and heavy metals while maintaining relatively high water flow. A filter comprising the fibrous membrane and a method for manufacturing the fibrous membrane are also provided.

A cartridge assembly for dispensing a disinfecting water is disclosed. The cartridge assembly has a cartridge for receiving water from a container and a water dispensing mechanism for receiving water from the cartridge and delivering the water to a surface. The cartridge holds an iodinated resin for eluting a quantity of iodine into the water passing through the cartridge. When the water dispensing mechanism is actuated, water is delivered from a container to the water dispensing mechanism and the water is delivered to the surface to be disinfected.

An on-demand filter structure including a first hydrophilic protective layer comprising a first surface exposable to a stream of water. A contact area on the first surface receives the stream. The first hydrophilic protective layer receives the stream and distributes water out a second surface, primarily using gravity. An activated carbon felt (ACF) layer is adjacent to the second surface, wherein the ACF layer is configured for water filtration, primarily using gravity. A second hydrophilic protective layer includes a third surface adjacent the ACF layer and a fourth surface. The third surface receives filtered water from the ACF layer, and the fourth surface expels the filtered water primarily using gravity, wherein the first and second hydrophilic protective layers sandwich the ACF layer. A cross section of the first hydrophilic protective layer, the ACF layer, and the second hydrophilic protective layer has a curvature.

A water filter system with a filter housing, a filter media, a filter coupling, and a dynamic seal. The filter housing has a top plate and a bottom plate which are both water-permeable, as well as a cavity between the top plate and the bottom plate. The filter media is within the cavity of the filter housing and extends through the bottom plate of the filter housing. The filter coupling extends upward from the top plate and is configured to attach to a float with at least one air chamber. The dynamic seal is coupled to the filter housing along a perimeter of the filter housing and is configured to extend beyond a perimeter of the float, maintain contact with a wall of a water container, and restrict water from passing between the dynamic seal and the wall of the water container.

The invention relates to a bioactive filter for the disinfection of liquids, in particular water or aqueous solutions in containers. A structure that is advantageous in terms of filter efficiency is obtained by forming a spherical or oval filter body (1), which is coated with noble metals (FIG. 1).

A gravity-fed filtration apparatus includes a filter housing having a water inlet near an upper portion of the filter housing and a water outlet near a lower portion of the filter housing. A water filter having a plurality of discs is removably stacked within an interior cavity of the filter housing between the water inlet and the water outlet. An outer perimeter portion of each of the plurality of discs sealingly engages with an inner surface of the filter housing. A first disc of the plurality of discs comprises a first plurality of diffusers and a disinfectant media. A second disc of the plurality of discs comprises a mesh. The lower portion of the filter housing is configured to be disposed in the mouth of a water vessel.

A tool adapted for use with a diffuser cartridge and a fluid container, wherein the tool is adapted to facilitate insertion and removal of the diffuser cartridge to and from the fluid container. The diffuser cartridge contains mineral agent beads or other materials which can enhance the quality of fluid contained within the container.

A porous carbon material having a value of a specific surface area by a nitrogen BET method of 110.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 m or more, alternatively, a porous carbon material having a value of a specific surface area by a nitrogen BET method of 110.sup.2 m.sup.2/g or more, a total of volumes of fine pores having a diameter of from 110.sup.9 m to 510.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 m or more.

A portable water purifier has a container, a lid assembly, and a filtering assembly. The container has a containing space. The lid assembly is mounted to the container by threading and has a suction nozzle communicating with the containing space. The filtering assembly is mounted in the container, is connected to the lid assembly, and has a cover and at least one filter element. The cover is disposed in the container, is adjacent to the lid assembly, and has a communicating tube communicating with the suction nozzle and an interior of the container. The at least one filter element is disposed between the cover and a bottom of the container.