The present invention provides an intrinsically anti-microbial hollow fiber membrane for filtration of liquids. The membrane comprises a plurality of porous hollow bilayer membrane fibers wherein the liquid enters from outside of the fiber, passing through the porous membrane into the lumen of the fiber and coming out from the hollow ending of the fiber, wherein this configuration provides a liquid outside-in arrangement and retains the filtrate outside. It means that membrane of the invention has built in characteristics to act against microbes in order to provide the use with a safe liquid free from microbes. The outer side or outer wall of the hollow fibers may be configured to become hydrophobic whereas inner side or inner wall of the hollow fiber membrane may be configured to become hydrophilic to enhance the water permeability to a great extent. The hollow fiber membrane may be configured to give it an intrinsic anti-microbial capability. A device containing above said membrane has also been disclosed.

A water treatment system with a photocatalytic nanocomposite sheet, an adsorbent layer, and a fibrous filter, wherein the photocatalytic nanocomposite sheet comprises polymethylmethacrylate and silver phosphate, the adsorbent layer comprises plasma activated carbon nanotubes, and the fibrous filter is a composite of polymethylmethacrylate, polyvinylidene fluoride, and polyvinylpyrrolidone polymer fibers, with carbon nanotubes that are dispersed within the polymer fibers and silver nanoparticles that are deposited on the polymer fibers. Various embodiments of the water treatment system and methods of fabricating the photocatalytic nanocomposite sheet, the adsorbent layer, and the fibrous filter are also provided.

Liquid, air, or surface treatment/sterilization/disinfection using pulsed light to eliminate, reduce, degrade, render inert, or nullify physical, chemical, biological, microbiological, or non-microbiological contaminants is disclosed herein. The system also includes at least one power supply powering the light source of the reactor, an ionized wire wrapped outside the light source of the reactor, at least one digital multiplexer connected to the at least one power supply, and a controller to control the at least one digital multiplexer to power the light source to strobe the pulsed light at a predetermined fluence, a predetermined pulsed width, and a predetermined frequency or spectrum to eliminate, reduce, degrade, render inert, or nullify the physical, chemical, biological, microbiological, or non-microbiological contaminants in a liquid flow, air, or surface at a molecular level.

The invention relates to a water purification system and distillation unit. The water purification system (3) comprises an input section (31) for providing water (21), in particular tap water, to a distillation unit (1), and said distillation unit (1) for producing distilled water. Said distillation unit comprises an evaporation section (12) for evaporating said water (21) and producing steam (23), and a condensation section (14) for at least partly condensing said steam (23), producing distilled water. The system further comprises a first admixing unit (32), in particular a cartridge, which is arranged and configured in such a way that it is enabled for admixing compounds, in particular minerals, to said distilled water, producing enriched distilled water, and an output section (33) for dispensing said enriched distilled water. Said evaporation section (12) is provided by a heatable side (101) of a first Peltier effect device (10) and said condensation section (14) is provided by a coolable side (102) of said first Peltier effect device (10).

Systems and methods of filtering particulate matter from a fluid are provided. In one exemplary embodiment, a system for filtering particulate matter having suspended particles, organic contaminants, and microorganisms from a fluid comprises a main filter assembly having an activated carbon block disposed therein. The carbon block has distributed pores with a diameter of less than one micron. Further, the carbon block is operable to filter all of the particulate matter having a diameter or a non-spherical width of at least 0.45 microns from the fluid, and adsorb the particulate matter having a diameter or a non-spherical width of at least 0.003 microns from the fluid.

A water filter includes a housing, a spoiler unit, a power generation unit, a sterilization unit and a purification unit. The housing includes an input portion, an output portion and a first thread portion. The spoiler unit is provided in the housing and corresponds to the input portion. The power generation unit is provided in the housing and is coupled to the spoiler unit. The sterilization unit is provided in the housing and is electrically connected to the power generation unit, and includes a sterilization light source. The purification unit is provided in the housing and corresponds to the output portion and the sterilization unit, and includes a plurality of purification particles. Thus, the water filter is enabled to be coupled to a faucet using the first thread portion, allowing tap water to flow toward the direction from the input portion to the output portion.

A cartridge for use in a water purification apparatus and a water purification method for maintaining a water quality supply are provided. The cartridge comprises an elongated tubular body having first and second ends comprising a fluid inlet and a fluid outlet, and an internal chamber extending between the first and second end. The first end includes an end cap having a first opening in fluid communication with the body. A disinfectant material is disposed in the internal chamber of the body. Filters are disposed in the elongated tubular body adjacent to the first opening and adjacent the second end of the elongated tubular body and are in fluid communication with the internal chamber and the fluid outlet. The second end of the elongated tubular body comprising an exterior surface having a tapered portion and a linear portion adjacent to the tapered portion.

A nanostructured composite membrane filter for rapid water purification and methods for preparing the nanostructured composite membrane filter are provided. The nanostructured composite membrane includes a silver layer having a plurality of silver functionalized nanofibers for disinfecting microorganisms of water, and a chemical modified layer having a plurality of chemical modified nanofibers for removing impurities from the water. The plurality of silver functionalized nanofibers includes a plurality of polyvinyl alcohol (PVA) nanofibers coated with polydopamine (PDA) and silver, and each of the plurality of chemical modified nanofibers includes a polymer matrix such as polyvinyl alcohol (PVA) and anionic polyelectrolytes such as poly (sodium styrenesulfonate) (PSSNa) for capturing metal ions of the water.

Systems and methods for delivering silver ion biocide are described herein. The systems described relate to passing water from a water system through a silver ion release module and optional high-concentration silver ion release module. The system includes an analyzer, detector, and/or controller for monitoring the concentration of silver ion and adjusting the flow path, flow rate, temperature and/or pH of the water in order to obtain the desired concentration of silver ion. The system optionally includes other metal ions released into a water system, the concentration of which may be used to automatically calibrate the described system and/or cause the system to take actions based on the measured concentration of silver ion or of the second metal ion. The system comprises a material that may be advantageous for silver ions in the systems.

The invention relates to the field of disinfection and purification of reservoirs from cyanobacteria and green algae. The formulation for purifying water from cyanobacteria and green algae comprising sodium percarbonate powder and a binding agent, i.e. hydrophobizer, according to the invention comprises, as a binding agent, a hydrophobizer melt in the form of a high-melting triglyceride fraction to provide formation therebased of a superhydrophobic coating with a contact angle of 155-165°, by way of adding the hydrophobizer melt into sodium percarbonate powder heated to a temperature of 60-70°, with the following ratio of components, wt %: sodium percarbonate: 85-97 hydrophobizer melt in the form of high-melting triglyceride fractions—the remainder, followed by uniform mixing, aging at a temperature of 65° C. for no more than 5 minutes, cooling to room temperature and grinding the resulting mixture to a dispersed state with a particle size of 50-250 microns.