Abstract: A liquid purification system includes a raw liquid supply line with a sorbent dispenser connected to an inlet of a filtration cartridge with a precoated layer of sorbent formed and removable by flushing and a purified liquid line connected to a purified liquid output of the filtration cartridge. The system is configured to decant spent sorbent and return most of the flushing liquid to the raw liquid supply line. A flushing liquid and sorbent separation device is connected to a flushing liquid outlet of the filtration cartridge, and a clarified flushing liquid outlet of the flushing liquid and sorbent separation device is connected to the raw liquid supply line. The filtration cartridge is made as a hollow-fiber cartridge.

Abstract: The invention relates to autonomous membrane liquid purification devices with the possibility of recirculation and/or desalination of liquid, mainly water from various sources for domestic and/or drinking water supply and is intended for use in domestic conditions, public institutions, in suburban and garden areas. A membrane liquid purification device consisting of a liquid tank, a liquid withdrawal means, a pressure increasing means, a liquid purification unit, a purified liquid line and a drainage line, characterized in that it is made with the possibility of taking liquid from preferably the surface layer of liquid in a liquid tank and automatically stopping the liquid purification process when the liquid level in the liquid tank reaches a set value and/or after the required volume of liquid is purified.

Abstract: A valved raw liquid supply line, which is connected to a filtration unit including a liquid purification unit with an inlet and with outlets for purified liquid and drain liquid, a mixing device, a means for maintaining pressure, a means for maintaining a recirculating flow of liquid, which is located on a line supplying a mixture of raw liquid and concentrate upstream of the liquid purification unit, a recirculating line, a purified liquid line, a drain liquid line, and a control unit, which is connected to the means for maintaining pressure, pressure monitor, the raw liquid supply valve and a drain liquid discharge valve. The means for maintaining pressure is located on a raw liquid supply line upstream of the liquid mixing device. The technical result is a longer system working life, more efficient use of raw liquid, and reduced energy expenditure.

Abstract: A filtration cartridge of a liquid purification device that consists of a filtration zone (1) and a venting zone (6), said filtration zone in turn consists of a housing (2) filled with a filtration material (3) and not less than one opening (5) made in the bottom (4) of the housing (2), said venting zone consists of fixation means (7) and a lid (8), performed so that the filtration material (3) has a multi-clustered interconnected structure, and the venting zone (6) is formed so as to retain and preserve the main structure of the filtration material (3) inside the housing (2) of the filtration cartridge, by means of the fixation means (7) being the first retention barrier and made as a grid, the size of mesh (11) of said grid does preferably not exceed the average size of the filtration material cluster, and the lid (8) is made as a second retention barrier and formed, with meshes (12) comprising net sections and a top point (9) of the lid (8) is positioned at a distance preferably not more than 1 cm above th

Abstract: Raw liquid is fed along a raw liquid and drain liquid mixing line to a liquid purification device. Drain liquid is fed along a recirculation line to be mixed with raw liquid. After a set period of time, the liquid purification process is interrupted to flush the liquid purification device by a liquid to remove contaminants built up on the inside surface of the liquid purification device. Downstream of the liquid purification device, the liquid is discharged at high speed into a drain. Prior to flushing, the purification process is interrupted at least once for a time sufficient to enable disruption of a polarized layer of contaminants. A mixture of raw liquid and drain liquid is used as the liquid medium for flushing such that less raw liquid is used for flushing and the service life of the water purification device increases.

Abstract: The invention relates to composite materials, and more particular to composite adsorptive materials for purification of liquids, in particular, a drinking water, on the basis of components of a granulated material and a fibrous material. The new composite material for filtering purifying a liquid on the basis of a mixture of components of granulated and fibrous materials comprises volume zones with adjustable density, which zones create the structure of the material, which structure is self-strengthened when a liquid flows in the course of filtration, wherein, said volume zones make the material most part, each zone is created in the form of a interlaced fiber site, which sites are bonded among themselves by separate fibers, and the space within and between said interlaced fiber sites is filled with a granulated material.

Abstract: The rapid assembly flange joint consists of a connecting device in the form of a constricting collar made up of at least two parts with a shaped groove on the concave face, the groove corresponding to the cross-section of the two coupled flanges of the members that are being connected, and clamping elements in the form of retaining sections on the flanges. The connecting device is provided with fasteners in the form of walls; the retaining sections are in the form of grooves, the width of which is not less than the thickness of the one or two fasteners that engage therewith. The number of grooves is not less than the number of component parts of the connecting device. The rapid assembly flange joint provides for a reliable connection between flanged cylindrical members without the need for additional fastening and clamping elements and without increasing the sizes of the connection point.

Abstract: The inventions relate to purifying water and can be used in domestic water purification systems. The claimed filtered water storage unit for the storage device of a water purification system includes a housing, an elastic chamber for filtered water, and a region for pressurizing untreated water. The water purification system includes a reverse osmosis membrane, a clean water discharge pipe, an overflow into a drain, a clean water tap, and a storage device having a filtered water storage unit and a hydro-automatic unit. The outlet of the controlled chamber of a valve is associated with the water pressurizing region in the housing of the water storage unit, and the input of the controlling chamber of a valve is associated with the clean water discharge pipe upstream of the tap, wherein the valve for controlling water pressurization is normally open and the valve for controlling drainage is normally closed.

Abstract: Disclosed are filtering cartridge and methods of producing the filtering cartridge for purifying drinking water and other liquids for household, medical and other purposes. A filter cartridge is filled with a filtering material and is configured in the form of an open bowl which can be closed with a lid, having side walls and a bottom with at least one outlet opening which is closed with a water-permeable material, wherein the cartridge bottom is designed such as to make it possible to use the water-permeable material which comes to the external edge of the side walls and is made of fibers with a sufficiently small diameter to allow using the filtering material containing powder particles; furthermore, the entire area between external and internal edges of the walls along the perimeter of the bottom is made of a composite based on a polymer water-permeable material.

Abstract: The invention relates to composite materials, more specifically to composite membrane materials on the basis of polymeric materials used for the purification of a liquid, in particular drinking water. The novel composite material for the purification of a liquid by filtration is formed from a polymeric membrane in the form of a fibrillar-porous matrix comprising a hydrophilic polymer and a metallic antibacterial agent.

Abstract: A device for purifying a liquid is disclosed. The device includes a collecting vessel for an unpurified liquid, a collecting vessel for a purified liquid, a replaceable filter module filled with a filter material and an automatic means for timed injection of air into the collecting vessel for the unpurified liquid during a filtration process. The automatic means is connected to the collecting vessel for the unpurified liquid by an injection nozzle having a pressure control valve. Moreover, the automatic means is for maintaining positive air pressure above the unpurified liquid during the filtration process. Maintenance of positive air pressure during the filtration process increases filtration speed of the liquid with simultaneous increase in degree of purification of the liquid.

Abstract: The invention relates to flange joint devices. The rapid assembly flange joint consists of a connecting device in the form of a constricting collar made up of at least two parts with a shaped groove on the concave face, said channel corresponding to the cross-section of the two coupled flanges of the members that are being connected, and clamping elements in the form of retaining sections on the flanges. The connecting device is provided with fasteners in the form of walls; the retaining sections are in the form of grooves, the width of which is not less than the thickness of the one or two fasteners that engage therewith. The number of grooves is not less than the number of component parts of the connecting device. The invention provides for a reliable connection between flanged cylindrical members without the need for additional fastening and clamping elements and without increasing the sizes of the connection point.

Abstract: A method for disinfecting and purifying tap water and untreated water using a composite, bactericidal adsorption material as a filter. The method provides efficient and reliable disinfection, with simultaneous purification of water from heavy metal ions and organic matter and improvement of taste and odor. Water is filtered through a composite material containing granules of iodinated anion-exchange resin, granulated activated carbon and silver containing adsorbent, all uniformly distributed between amphoteric fibers. The exterior surface area of the iodine containing anion-exchange resin granules is not more than 1% of the exterior surface area of the amphoteric fibers, and the equivalent content of silver exceeds the equivalent content of iodine.

Abstract: The present process provides improved means for adsorbing components and for regeneration of a composite adsorption carbon material (CRAC) used for effecting the desired separation using an electrochemical process under conditions wherein the specific volumetric electric conductivity of the CRAC differs from that of the electrolyte employed by not more than one order of magnitude, a specific current density of at least 0.01 ampere per gram of CRAC is employed, and a high degree of regeneration of CRAC from polar and non-polar substances and heavy metal ions is obtained, as well as improved adsorption.

Abstract: The invention is directed to purification of liquids, such as drinking water using filters, wherein filtration is effected while the liquid flows upwardly. The invention includes both the method and a device enabling the method to be carried out. The device is constructed to intake impure liquid at the bottom of the filter and initially to effect flow by filling liquid to above the filter outlet near the top, and maintaining flow thereafter by virtue of the presence of a low internal pressure that develops as the liquid passes through the system.

Abstract: A composite adsorbent element comprising a packed mixture of granules and fibers, which are desirably granular activated carbon (GAC) and activated carbon fiber (ACF). The element is employed as a filter for purifying tap water. In the composite adsorbent element the activated carbon fibers fill the spaces between the activated carbon granules. The size and relative amounts of the GAC and ACF are designed to enable water treatment to remove impurities from water more rapidly than conventional filters using granular activated carbon. Furthermore, when there are significant time intervals between filtration, a packed mixture of granular activated carbon and activated carbon fibers made in accordance with the invention shows an improved ability to rejuvenate its adsorption capabilities in the time intervals between filtrations.

Abstract: A composite adsorbent element comprising a packed mixture of granules and fibers, which are desirably granular activated carbon (GAC) and activated carbon fiber (ACF). The element is employed as a filter for purifying tap water. In the composite adsorbent element the activated carbon fibers fill the spaces between the activated carbon granules. The size and relative amounts of the GAC and ACF are designed to enable water treatment to remove impurities from water more rapidly than conventional filters using granular activated carbon.

Abstract: An activated carbon is modified to have bactericidal properties and/or an additional ability to remove heavy metals and other toxic substances. Said modified activated carbon is especially suitable for purifying drinking water and can be readily modified to be suitable for various regions with specific tap water impurities. Pursuant to the invention, activated carbon fiber is treated to adsorb a member of the group consisting of cations, anions, organic complex forming agents, surfactants, polyelectrolytes and organic bactericidal compounds.

Abstract: Activated carbon fiber is made by pre-treating a carbonized fibrous material, preferably a carbonized cellulose fiber, with a solution of nitrogen-containing compound, comprising at least one of the following substances: urea, ammonium carbonate, ammonium bicarbonate, ammonium acetate, and other organic salts of ammonia such as formate, carbamate, citrate and oxylate, and activating the pre-treated carbonized material at 800.degree. to 1200.degree. C. in an atmosphere comprising steam and/or carbon dioxide until a high degree of activation is produced. The activated carbon fiber material is amphoteric, wherein both acidic and basic functional groups are present on its surface. The resulting material is suitable for removing organic impurities, cations and anions from water and other fluids.