The invention relates to the field of electrochemical production of disinfectants, where a solution of alkaline metals is used as the electrolyte in the anode chamber. The invention offers a new design for electrolyzers, reducing power consumption in the production of disinfectants by known methods. As a result of this invention, power consumed in the production of 1 gram of active chlorine by known methods will be reduced by 20%, and the possibilities for producing disinfectants with active chlorine content 7500 ppm in an electrolyzer without channelling the water into external cooling devices will also expand.

Apparatus for purifying a fluid, which comprises electrode layers facing each other, power supplied to different polarities with spacer layers interposed, and traversed by a flow of fluid to be treated containing ionized particles. The electrode layers and the spacer layers are wound as a spiral around a longitudinal extension axis inside the suitably cylindrical containment structure. The power supply comprises a pair of collectors that are extended with portions inside the winding connected to the corresponding first internal sides of the electrode layers at the longitudinal extension axis.

The invention relates to a water tank (1) with water filter cartridge (2), characterized in that the water filter cartridge (2) comprises two water filter cartridge outlets which are arranged concentrically to one another.

This invention is directed to a method, system and apparatus for the treatment fluids. An apparatus for the treatment of a fluid comprises a fluid chamber and at least one ultraviolet light unit arranged at a periphery of the fluid chamber. The at least one ultraviolet light unit comprises at least one ultraviolet light emitting diode and an ultraviolet light directing element. The ultraviolet light directing element is configured to collimate at least a portion of the light emitted from the at least one ultraviolet light emitting diode in use such that the ultraviolet light rays emitted from each ultraviolet light unit are parallel in a first plane. Also described is a method for the cooling a light emitting diode in a fluid treatment system.

A replaceable water filter includes a filter assembly having a filter structure with first, second, and third filtering elements sharing a common axis, the first filtering element for removing and/or reducing particulate contaminants in the water, the second filtering element for removing and/or reducing particulate and organic contaminants in the water and the third filtering element for removing and/or reducing at least one of fluoride and arsenic in the water. The filter further includes a housing that contains the filter assembly. The housing includes a first end adapted to removably attach the filter to a filter mount of the refrigerator where the filter communicates with the water supply of the refrigerator. The first filtering element can be fabric, the second filtering element can be a carbon block, and the third filtering element can be activated alumina.

There are provided processes for treating wastewater. The processes can comprise treating a mixture comprising the wastewater and an activated sludge, in a single reactor, with an electric current having a density of less than about 55 A/m.sup.2, by means of at least one anode and at least one cathode that define therebetween an electrical zone for treating the mixture; exposing the mixture to an intermittent ON/OFF electrical exposure mode to the electric current in which an OFF period of time is about 1 to about 10 times longer than an ON period of time; and maintaining an adequate oxidation-reduction potential in the single reactor. Such processes allow for substantial removal of carbon, nitrogen and phosphorus from the wastewater in the single reactor of various forms and for obtaining another mixture comprising a treated wastewater and solids.

A rod-shaped electrolysis device having an electrically conductive housing, wherein in the housing, a receiving space for at least one voltage source and an electronic control unit is embodied which is separated from an electrode space formed in the housing in a liquid-tight manner, and wherein an electrode extends within the electrode space, and wherein in the housing, at least one opening is formed in the region of the electrode space. The electrolysis device is characterized in that the housing comprises a receiving socket which is electrically connected both with the housing and the electrode. Via the receiving socket, the residual voltage of a voltage source and also the charging of a rechargeable voltage source may be measured. Furthermore, a data memory may be read out via the receiving socket.

A method for producing a purified, stable, dioxytetrahydride compressible gas from water. The gas is suitable for a variety of uses and may also be infused into water which itself is useful for a variety of purposes.

The present invention comprises a process and apparatus for separation of hydrocarbons from hydrocarbon-containing produced water, wherein in stage 1 the hydrocarbon-containing produced water is supplied with a gas-containing component, whereupon a gas- and hydrocarbon-containing produced water mixture is fed to an inlet tube (22, 27) in the center of a tank, whereupon the said mixture is tangentially distributed via at least one nozzle (7) and at least one baffle plate (8.1), whereupon separated hydrocarbons are conveyed to at least one outlet from the tank and cleaned water is conveyed to an outlet (12) from the tank.

An apparatus for the treatment of a liquid that includes a chamber having at least one inner surface, the chamber adapted for passage of a fluid therethrough. The chamber is at least 80 percent enclosed. The apparatus also includes an optional ultraviolet-transmissive tube disposed within the chamber and also adapted for the passage of the liquid therethrough. The apparatus further includes an ultraviolet lamp disposed within the chamber and, optionally, within the ultraviolet-transmissive tube. A reflective material is interposed between the chamber and the transmissive tube. The reflective material is adapted so as to reflect at least a portion of light emitted by the ultraviolet lamp, wherein the reflective material is at least 80 percent reflective.