A mobile treatment system is provided for treating contaminates in water, particularly during emergency situations such as natural disasters and planned attacks. The mobile treatment system includes a mobile framework; one or more treatment modules mounted on the mobile framework; a piping system in fluid communication with the one or more treatment modules, said piping system comprising one or more pumps configured to convey water to and from the one or more treatment modules; and at least one power source to provide power to the one or more pumps and one or more treatment modules. The treatment modules may include pre-filtration, chlorination treatment that generates chlorine by electrolysis, activated carbon treatment, and treatment using a disinfecting, silver coated composite material.

A water filtration system is provided that comprises a combination of two components: silver nanoparticles immobilized on a porous carbon solid matrix and calcium carbonate silver nanoparticles. The silver nanoparticles immobilized on the porous carbon solid matrix are prepared in a one-step wet ball milling process that does not use an environmentally hazardous reducing agent or an organic stabilizer. The calcium carbonate in the calcium carbonate silver nanoparticles is preferably isolated from egg shells. The two filter components can be present in any ratio but an approximate 50:50 ratio is preferred. Also provided is an in situ method of preparing silver nanoparticles on active charcoal. Powdered activated charcoal and silver nitrate are mixed together in a mixture of ethanol and water to form a charcoal-silver nitrate solution which is then subjected to ball milling in the presence of polypropylene glycol to produce silver nanoparticles on active charcoal.

In one aspect, an oxygenated hierarchically porous carbon (an “O-HPC”) is provided, the O-HPC comprising: a hierarchically porous carbon (an “HPC”), the HPC comprising a surface, the surface comprising: (A) first order pores having an average diameter of between about 1 μm and about 10 μm; and (B) walls separating the first order pores, the walls comprising: (1) second order pores having a peak diameter between about 7 nm and about 130 nm; and (2) third order pores having an average diameter of less than about 4 nm, wherein at least a portion of the HPC surface has been subjected to O.sub.2 plasma to oxygenate and induce a negative charge to the surface. In one aspect, the O-HPC further comprises metal nanoparticles dispersed within the first, second, and third order pores. Methods for making and using the metal nanoparticle-impregnated O-HPCs are also provided.

An automatic pet water feeder includes a water replenishing assembly including a bucket body, a bucket cover on a mouth of the bucket body, a silicone plug in the bucket cover, and a movable pin configured to telescopically drive the silicone plug to block and dredge the mouth of the bucket body; and a filter assembly including a shell and a filter element in the shell. One end of the bucket cover is inserted into the shell. The filter element is configured to filter water flowing from the bucket body. The pet water feeder may filter drinking water multiple times through the filter element so that water may be effectively purified. The bucket body may be automatically blocked by gravity through the telescopic movable pin, so that water may not be spilled when being changed.

An automatic pet water feeder includes a water replenishing assembly including a bucket body, a bucket cover on a mouth of the bucket body, a silicone plug in the bucket cover, and a movable pin configured to telescopically drive the silicone plug to block and dredge the mouth of the bucket body; and a filter assembly including a shell and a filter element in the shell. One end of the bucket cover is inserted into the shell. The filter element is configured to filter water flowing from the bucket body. The pet water feeder may filter drinking water multiple times through the filter element so that water may be effectively purified. The bucket body may be automatically blocked by gravity through the telescopic movable pin, so that water may not be spilled when being changed.

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).

An article for removing undesired chemical ions or compounds from gas and fluid streams where the article is a porous polymeric matrix with a sorption particle, the sorption particle is capable of removing the undesired chemical ion or compound.

A filtering medium, a method for the production thereof, the use of said filtering medium and a method for reducing the content of multiple contaminants simultaneously in fluids by means of said filtering medium, wherein said filtering medium has or includes at least one of the following: a mixture (A) containing a major part of an iron-based powder and a minor part of a silver powder, an iron-silver powder alloy (B), and an iron-based porous and permeable composite containing silver (C).

A method for treating water in a spa or a hot tub includes, for example, suspending a water treatment dispenser from an upper end of a filter cartridge disposed in a skimmer of the spa or the hot tub. The dispenser includes a water treatment material. A supply of water is passed from the spa or the hot tub into the skimmer and through the filter cartridge so that the dispenser suspended in the filtered water in the filter cartridge is operable to dispense the water treatment material from the dispenser, and a supply of treated filtered water from the filter cartridge is returned to the spa or the hot tub. A cover, for example, may be employed when the dispenser is not used.

The invention relates to the field of disinfection and purification of reservoirs from cyanobacteria and green algae. The composition for purifying water from cyanobacteria and green algae comprising copper sulphate 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 copper sulphate powder heated to a temperature of 60-70°, with the following ratio of components, wt %: copper sulphate: 85-97 hydrophobizer melt in the form of high-melting triglyceride fractions—the remainder, followed by uniform mixing, incubating 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.